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int64
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similarQuestions
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mysqlSchemas
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295 values
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24.9k
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153
2,408
Design SQL
design-sql
null
Medium
12.8K
17.9K
12,822
17,894
71.7%
[]
[]
Algorithms
null
["SQL","ins","sel","ins","exp","rmv","sel","exp"] [[["one","two","three"],[2,3,1]],["two",["first","second","third"]],["two",1,3],["two",["fourth","fifth","sixth"]],["two"],["two",1],["two",2,2],["two"]]
{ "classname": "SQL", "constructor": { "params": [ { "type": "list<string>", "name": "names" }, { "name": "columns", "type": "list<integer>" } ] }, "methods": [ { "params": [ { "type": "string", "name": "name" ...
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Hash Table', 'String', 'Design']
2,409
Count Days Spent Together
count-days-spent-together
<p>Alice and Bob are traveling to Rome for separate business meetings.</p> <p>You are given 4 strings <code>arriveAlice</code>, <code>leaveAlice</code>, <code>arriveBob</code>, and <code>leaveBob</code>. Alice will be in the city from the dates <code>arriveAlice</code> to <code>leaveAlice</code> (<strong>inclusive</st...
Easy
26.9K
58.1K
26,866
58,100
46.2%
['number-of-days-between-two-dates', 'minimum-number-of-operations-to-convert-time']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int countDaysTogether(string arriveAlice, string leaveAlice, string arriveBob, string leaveBob) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int countDaysTogether(String arriveAlic...
"08-15" "08-18" "08-16" "08-19"
{ "name": "countDaysTogether", "params": [ { "name": "arriveAlice", "type": "string" }, { "type": "string", "name": "leaveAlice" }, { "type": "string", "name": "arriveBob" }, { "type": "string", "name": "leaveBob" } ], "return": { ...
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Math', 'String']
2,410
Maximum Matching of Players With Trainers
maximum-matching-of-players-with-trainers
<p>You are given a <strong>0-indexed</strong> integer array <code>players</code>, where <code>players[i]</code> represents the <strong>ability</strong> of the <code>i<sup>th</sup></code> player. You are also given a <strong>0-indexed</strong> integer array <code>trainers</code>, where <code>trainers[j]</code> represent...
Medium
49.7K
74.8K
49,717
74,803
66.5%
['most-profit-assigning-work', 'long-pressed-name', 'interval-list-intersections', 'largest-merge-of-two-strings', 'maximum-number-of-tasks-you-can-assign', 'successful-pairs-of-spells-and-potions', 'the-latest-time-to-catch-a-bus', 'maximize-greatness-of-an-array']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int matchPlayersAndTrainers(vector<int>& players, vector<int>& trainers) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int matchPlayersAndTrainers(int[] players, int[] trainers) {\n...
[4,7,9] [8,2,5,8]
{ "name": "matchPlayersAndTrainers", "params": [ { "name": "players", "type": "integer[]" }, { "type": "integer[]", "name": "trainers" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Two Pointers', 'Greedy', 'Sorting']
2,411
Smallest Subarrays With Maximum Bitwise OR
smallest-subarrays-with-maximum-bitwise-or
<p>You are given a <strong>0-indexed</strong> array <code>nums</code> of length <code>n</code>, consisting of non-negative integers. For each index <code>i</code> from <code>0</code> to <code>n - 1</code>, you must determine the size of the <strong>minimum sized</strong> non-empty subarray of <code>nums</code> starting...
Medium
15K
33.5K
15,038
33,493
44.9%
['merge-k-sorted-lists', 'bitwise-ors-of-subarrays', 'longest-subarray-with-maximum-bitwise-and']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n vector<int> smallestSubarrays(vector<int>& nums) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int[] smallestSubarrays(int[] nums) {\n \n }\n}"}, {"value": "python", "text...
[1,0,2,1,3]
{ "name": "smallestSubarrays", "params": [ { "name": "nums", "type": "integer[]" } ], "return": { "type": "integer[]" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Binary Search', 'Bit Manipulation', 'Sliding Window']
2,412
Minimum Money Required Before Transactions
minimum-money-required-before-transactions
<p>You are given a <strong>0-indexed</strong> 2D integer array <code><font face="monospace">transactions</font></code>, where <code>transactions[i] = [cost<sub>i</sub>, cashback<sub>i</sub>]</code>.</p> <p>The array describes transactions, where each transaction must be completed exactly once in <strong>some order</st...
Hard
12K
29.2K
11,952
29,202
40.9%
[]
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n long long minimumMoney(vector<vector<int>>& transactions) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public long minimumMoney(int[][] transactions) {\n \n }\n}"}, {"value": "p...
[[2,1],[5,0],[4,2]]
{ "name": "minimumMoney", "params": [ { "name": "transactions", "type": "integer[][]" } ], "return": { "type": "long" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Greedy', 'Sorting']
2,413
Smallest Even Multiple
smallest-even-multiple
Given a <strong>positive</strong> integer <code>n</code>, return <em>the smallest positive integer that is a multiple of <strong>both</strong> </em><code>2</code><em> and </em><code>n</code>. <p>&nbsp;</p> <p><strong class="example">Example 1:</strong></p> <pre> <strong>Input:</strong> n = 5 <strong>Output:</strong> 1...
Easy
225.7K
256.3K
225,676
256,338
88.0%
['greatest-common-divisor-of-strings', 'three-divisors', 'find-greatest-common-divisor-of-array', 'convert-the-temperature', 'minimum-cuts-to-divide-a-circle']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int smallestEvenMultiple(int n) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int smallestEvenMultiple(int n) {\n \n }\n}"}, {"value": "python", "text": "Python", "default...
5
{ "name": "smallestEvenMultiple", "params": [ { "name": "n", "type": "integer" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Math', 'Number Theory']
2,414
Length of the Longest Alphabetical Continuous Substring
length-of-the-longest-alphabetical-continuous-substring
<p>An <strong>alphabetical continuous string</strong> is a string consisting of consecutive letters in the alphabet. In other words, it is any substring of the string <code>&quot;abcdefghijklmnopqrstuvwxyz&quot;</code>.</p> <ul> <li>For example, <code>&quot;abc&quot;</code> is an alphabetical continuous string, while...
Medium
54K
91.3K
53,976
91,305
59.1%
['longest-consecutive-sequence', 'arithmetic-slices', 'max-consecutive-ones', 'maximum-number-of-vowels-in-a-substring-of-given-length', 'number-of-zero-filled-subarrays']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int longestContinuousSubstring(string s) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int longestContinuousSubstring(String s) {\n \n }\n}"}, {"value": "python", "text": ...
"abacaba"
{ "name": "longestContinuousSubstring", "params": [ { "name": "s", "type": "string" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['String']
2,415
Reverse Odd Levels of Binary Tree
reverse-odd-levels-of-binary-tree
<p>Given the <code>root</code> of a <strong>perfect</strong> binary tree, reverse the node values at each <strong>odd</strong> level of the tree.</p> <ul> <li>For example, suppose the node values at level 3 are <code>[2,1,3,4,7,11,29,18]</code>, then it should become <code>[18,29,11,7,4,3,1,2]</code>.</li> </ul> <p>...
Medium
164.6K
190.1K
164,624
190,052
86.6%
['invert-binary-tree']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "/**\n * Definition for a binary tree node.\n * struct TreeNode {\n * int val;\n * TreeNode *left;\n * TreeNode *right;\n * TreeNode() : val(0), left(nullptr), right(nullptr) {}\n * TreeNode(int x) : val(x), left(nullptr), right(nullptr) {}\n * Tre...
[2,3,5,8,13,21,34]
{ "name": "reverseOddLevels", "params": [ { "name": "root", "type": "TreeNode" } ], "return": { "type": "TreeNode" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Tree', 'Depth-First Search', 'Breadth-First Search', 'Binary Tree']
2,416
Sum of Prefix Scores of Strings
sum-of-prefix-scores-of-strings
<p>You are given an array <code>words</code> of size <code>n</code> consisting of <strong>non-empty</strong> strings.</p> <p>We define the <strong>score</strong> of a string <code>term</code> as the <strong>number</strong> of strings <code>words[i]</code> such that <code>term</code> is a <strong>prefix</strong> of <co...
Hard
115.7K
190.7K
115,723
190,682
60.7%
['design-add-and-search-words-data-structure', 'maximum-xor-of-two-numbers-in-an-array', 'map-sum-pairs']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n vector<int> sumPrefixScores(vector<string>& words) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int[] sumPrefixScores(String[] words) {\n \n }\n}"}, {"value": "python", "...
["abc","ab","bc","b"]
{ "name": "sumPrefixScores", "params": [ { "type": "string[]", "name": "words" } ], "return": { "type": "integer[]" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'String', 'Trie', 'Counting']
2,417
Closest Fair Integer
closest-fair-integer
null
Medium
1.3K
2.9K
1,291
2,864
45.1%
[]
[]
Algorithms
null
2
{ "name": "closestFair", "params": [ { "name": "n", "type": "integer" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Math', 'Enumeration']
2,418
Sort the People
sort-the-people
<p>You are given an array of strings <code>names</code>, and an array <code>heights</code> that consists of <strong>distinct</strong> positive integers. Both arrays are of length <code>n</code>.</p> <p>For each index <code>i</code>, <code>names[i]</code> and <code>heights[i]</code> denote the name and height of the <c...
Easy
338.3K
398.9K
338,274
398,890
84.8%
['sort-array-by-increasing-frequency', 'sort-the-students-by-their-kth-score']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n vector<string> sortPeople(vector<string>& names, vector<int>& heights) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public String[] sortPeople(String[] names, int[] heights) {\n \n...
["Mary","John","Emma"] [180,165,170]
{ "name": "sortPeople", "params": [ { "type": "string[]", "name": "names" }, { "type": "integer[]", "name": "heights" } ], "return": { "type": "string[]" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Hash Table', 'String', 'Sorting']
2,419
Longest Subarray With Maximum Bitwise AND
longest-subarray-with-maximum-bitwise-and
<p>You are given an integer array <code>nums</code> of size <code>n</code>.</p> <p>Consider a <strong>non-empty</strong> subarray from <code>nums</code> that has the <strong>maximum</strong> possible <strong>bitwise AND</strong>.</p> <ul> <li>In other words, let <code>k</code> be the maximum value of the bitwise AND...
Medium
154.8K
250.6K
154,806
250,559
61.8%
['number-of-different-integers-in-a-string', 'remove-colored-pieces-if-both-neighbors-are-the-same-color', 'count-number-of-maximum-bitwise-or-subsets', 'smallest-subarrays-with-maximum-bitwise-or']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int longestSubarray(vector<int>& nums) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int longestSubarray(int[] nums) {\n \n }\n}"}, {"value": "python", "text": "Python", "...
[1,2,3,3,2,2]
{ "name": "longestSubarray", "params": [ { "name": "nums", "type": "integer[]" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Bit Manipulation', 'Brainteaser']
2,420
Find All Good Indices
find-all-good-indices
<p>You are given a <strong>0-indexed</strong> integer array <code>nums</code> of size <code>n</code> and a positive integer <code>k</code>.</p> <p>We call an index <code>i</code> in the range <code>k &lt;= i &lt; n - k</code> <strong>good</strong> if the following conditions are satisfied:</p> <ul> <li>The <code>k</...
Medium
27.8K
70.2K
27,761
70,160
39.6%
['find-good-days-to-rob-the-bank', 'abbreviating-the-product-of-a-range', 'count-the-number-of-k-big-indices']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n vector<int> goodIndices(vector<int>& nums, int k) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public List<Integer> goodIndices(int[] nums, int k) {\n \n }\n}"}, {"value": "pyth...
[2,1,1,1,3,4,1] 2
{ "name": "goodIndices", "params": [ { "name": "nums", "type": "integer[]" }, { "type": "integer", "name": "k" } ], "return": { "type": "list<integer>" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Dynamic Programming', 'Prefix Sum']
2,421
Number of Good Paths
number-of-good-paths
<p>There is a tree (i.e. a connected, undirected graph with no cycles) consisting of <code>n</code> nodes numbered from <code>0</code> to <code>n - 1</code> and exactly <code>n - 1</code> edges.</p> <p>You are given a <strong>0-indexed</strong> integer array <code>vals</code> of length <code>n</code> where <code>vals[...
Hard
59.9K
107.1K
59,912
107,104
55.9%
['checking-existence-of-edge-length-limited-paths', 'checking-existence-of-edge-length-limited-paths-ii', 'longest-nice-substring', 'count-good-triplets-in-an-array', 'count-pairs-of-similar-strings']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int numberOfGoodPaths(vector<int>& vals, vector<vector<int>>& edges) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int numberOfGoodPaths(int[] vals, int[][] edges) {\n \n ...
[1,3,2,1,3] [[0,1],[0,2],[2,3],[2,4]]
{ "name": "numberOfGoodPaths", "params": [ { "type": "integer[]", "name": "vals" }, { "type": "integer[][]", "name": "edges" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Hash Table', 'Tree', 'Union Find', 'Graph', 'Sorting']
2,422
Merge Operations to Turn Array Into a Palindrome
merge-operations-to-turn-array-into-a-palindrome
null
Medium
17.7K
25.6K
17,656
25,585
69.0%
[]
[]
Algorithms
null
[4,3,2,1,2,3,1]
{ "name": "minimumOperations", "params": [ { "name": "nums", "type": "integer[]" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Two Pointers', 'Greedy']
2,423
Remove Letter To Equalize Frequency
remove-letter-to-equalize-frequency
<p>You are given a <strong>0-indexed</strong> string <code>word</code>, consisting of lowercase English letters. You need to select <strong>one</strong> index and <strong>remove</strong> the letter at that index from <code>word</code> so that the <strong>frequency</strong> of every letter present in <code>word</code> i...
Easy
61K
338.1K
60,997
338,086
18.0%
['maximum-equal-frequency', 'minimum-deletions-to-make-character-frequencies-unique']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n bool equalFrequency(string word) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public boolean equalFrequency(String word) {\n \n }\n}"}, {"value": "python", "text": "Python", "de...
"abcc"
{ "name": "equalFrequency", "params": [ { "name": "word", "type": "string" } ], "return": { "type": "boolean" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Hash Table', 'String', 'Counting']
2,424
Longest Uploaded Prefix
longest-uploaded-prefix
<p>You are given a stream of <code>n</code> videos, each represented by a <strong>distinct</strong> number from <code>1</code> to <code>n</code> that you need to &quot;upload&quot; to a server. You need to implement a data structure that calculates the length of the <strong>longest uploaded prefix</strong> at various p...
Medium
24.5K
43.6K
24,532
43,572
56.3%
['design-an-ordered-stream']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class LUPrefix {\npublic:\n LUPrefix(int n) {\n \n }\n \n void upload(int video) {\n \n }\n \n int longest() {\n \n }\n};\n\n/**\n * Your LUPrefix object will be instantiated and called as such:\n * LUPrefix* obj = new LUPrefi...
["LUPrefix","upload","longest","upload","longest","upload","longest"] [[4],[3],[],[1],[],[2],[]]
{ "classname": "LUPrefix", "constructor": { "params": [ { "type": "integer", "name": "n" } ] }, "methods": [ { "params": [ { "type": "integer", "name": "video" } ], "name": "upload", "return": { "type": "...
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Binary Search', 'Union Find', 'Design', 'Binary Indexed Tree', 'Segment Tree', 'Heap (Priority Queue)', 'Ordered Set']
2,425
Bitwise XOR of All Pairings
bitwise-xor-of-all-pairings
<p>You are given two <strong>0-indexed</strong> arrays, <code>nums1</code> and <code>nums2</code>, consisting of non-negative integers. Let there be another array, <code>nums3</code>, which contains the bitwise XOR of <strong>all pairings</strong> of integers between <code>nums1</code> and <code>nums2</code> (every int...
Medium
145.8K
217.6K
145,845
217,554
67.0%
[]
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int xorAllNums(vector<int>& nums1, vector<int>& nums2) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int xorAllNums(int[] nums1, int[] nums2) {\n \n }\n}"}, {"value": "pyt...
[2,1,3] [10,2,5,0]
{ "name": "xorAllNums", "params": [ { "name": "nums1", "type": "integer[]" }, { "type": "integer[]", "name": "nums2" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Bit Manipulation', 'Brainteaser']
2,426
Number of Pairs Satisfying Inequality
number-of-pairs-satisfying-inequality
<p>You are given two <strong>0-indexed</strong> integer arrays <code>nums1</code> and <code>nums2</code>, each of size <code>n</code>, and an integer <code>diff</code>. Find the number of <strong>pairs</strong> <code>(i, j)</code> such that:</p> <ul> <li><code>0 &lt;= i &lt; j &lt;= n - 1</code> <strong>and</strong><...
Hard
15.8K
35K
15,777
35,048
45.0%
['k-diff-pairs-in-an-array', 'count-nice-pairs-in-an-array', 'count-number-of-bad-pairs', 'maximum-balanced-subsequence-sum']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n long long numberOfPairs(vector<int>& nums1, vector<int>& nums2, int diff) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public long numberOfPairs(int[] nums1, int[] nums2, int diff) {\n ...
[3,2,5] [2,2,1] 1
{ "name": "numberOfPairs", "params": [ { "name": "nums1", "type": "integer[]" }, { "type": "integer[]", "name": "nums2" }, { "type": "integer", "name": "diff" } ], "return": { "type": "long" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Binary Search', 'Divide and Conquer', 'Binary Indexed Tree', 'Segment Tree', 'Merge Sort', 'Ordered Set']
2,427
Number of Common Factors
number-of-common-factors
<p>Given two positive integers <code>a</code> and <code>b</code>, return <em>the number of <strong>common</strong> factors of </em><code>a</code><em> and </em><code>b</code>.</p> <p>An integer <code>x</code> is a <strong>common factor</strong> of <code>a</code> and <code>b</code> if <code>x</code> divides both <code>a...
Easy
115.4K
145.4K
115,440
145,401
79.4%
['count-primes']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int commonFactors(int a, int b) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int commonFactors(int a, int b) {\n \n }\n}"}, {"value": "python", "text": "Python", "default...
12 6
{ "name": "commonFactors", "params": [ { "name": "a", "type": "integer" }, { "type": "integer", "name": "b" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Math', 'Enumeration', 'Number Theory']
2,428
Maximum Sum of an Hourglass
maximum-sum-of-an-hourglass
<p>You are given an <code>m x n</code> integer matrix <code>grid</code>.</p> <p>We define an <strong>hourglass</strong> as a part of the matrix with the following form:</p> <img alt="" src="https://assets.leetcode.com/uploads/2022/08/21/img.jpg" style="width: 243px; height: 243px;" /> <p>Return <em>the <strong>maximum...
Medium
46.2K
61K
46,188
60,956
75.8%
['matrix-block-sum']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int maxSum(vector<vector<int>>& grid) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int maxSum(int[][] grid) {\n \n }\n}"}, {"value": "python", "text": "Python", "defaultC...
[[6,2,1,3],[4,2,1,5],[9,2,8,7],[4,1,2,9]]
{ "name": "maxSum", "params": [ { "name": "grid", "type": "integer[][]" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Matrix', 'Prefix Sum']
2,429
Minimize XOR
minimize-xor
<p>Given two positive integers <code>num1</code> and <code>num2</code>, find the positive integer <code>x</code> such that:</p> <ul> <li><code>x</code> has the same number of set bits as <code>num2</code>, and</li> <li>The value <code>x XOR num1</code> is <strong>minimal</strong>.</li> </ul> <p>Note that <code>XOR<...
Medium
134.1K
214.7K
134,062
214,712
62.4%
['maximum-xor-of-two-numbers-in-an-array', 'maximum-xor-with-an-element-from-array']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int minimizeXor(int num1, int num2) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int minimizeXor(int num1, int num2) {\n \n }\n}"}, {"value": "python", "text": "Python", ...
3 5
{ "name": "minimizeXor", "params": [ { "name": "num1", "type": "integer" }, { "type": "integer", "name": "num2" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Greedy', 'Bit Manipulation']
2,430
Maximum Deletions on a String
maximum-deletions-on-a-string
<p>You are given a string <code>s</code> consisting of only lowercase English letters. In one operation, you can:</p> <ul> <li>Delete <strong>the entire string</strong> <code>s</code>, or</li> <li>Delete the <strong>first</strong> <code>i</code> letters of <code>s</code> if the first <code>i</code> letters of <code>...
Hard
15.5K
45K
15,464
45,005
34.4%
['shortest-palindrome', 'longest-happy-prefix', 'remove-all-occurrences-of-a-substring']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int deleteString(string s) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int deleteString(String s) {\n \n }\n}"}, {"value": "python", "text": "Python", "defaultCode": "cl...
"abcabcdabc"
{ "name": "deleteString", "params": [ { "name": "s", "type": "string" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['String', 'Dynamic Programming', 'Rolling Hash', 'String Matching', 'Hash Function']
2,431
Maximize Total Tastiness of Purchased Fruits
maximize-total-tastiness-of-purchased-fruits
null
Medium
3.4K
5.3K
3,414
5,301
64.4%
[]
[]
Algorithms
null
[10,20,20] [5,8,8] 20 1
{ "name": "maxTastiness", "params": [ { "name": "price", "type": "integer[]" }, { "type": "integer[]", "name": "tastiness" }, { "type": "integer", "name": "maxAmount" }, { "type": "integer", "name": "maxCoupons" } ], "return": { ...
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Dynamic Programming']
2,432
The Employee That Worked on the Longest Task
the-employee-that-worked-on-the-longest-task
<p>There are <code>n</code> employees, each with a unique id from <code>0</code> to <code>n - 1</code>.</p> <p>You are given a 2D integer array <code>logs</code> where <code>logs[i] = [id<sub>i</sub>, leaveTime<sub>i</sub>]</code> where:</p> <ul> <li><code>id<sub>i</sub></code> is the id of the employee that worked ...
Easy
39.2K
77.9K
39,242
77,862
50.4%
[]
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int hardestWorker(int n, vector<vector<int>>& logs) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int hardestWorker(int n, int[][] logs) {\n \n }\n}"}, {"value": "python",...
10 [[0,3],[2,5],[0,9],[1,15]]
{ "name": "hardestWorker", "params": [ { "name": "n", "type": "integer" }, { "type": "integer[][]", "name": "logs" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array']
2,433
Find The Original Array of Prefix Xor
find-the-original-array-of-prefix-xor
<p>You are given an <strong>integer</strong> array <code>pref</code> of size <code>n</code>. Find and return <em>the array </em><code>arr</code><em> of size </em><code>n</code><em> that satisfies</em>:</p> <ul> <li><code>pref[i] = arr[0] ^ arr[1] ^ ... ^ arr[i]</code>.</li> </ul> <p>Note that <code>^</code> denotes ...
Medium
165.7K
188.2K
165,719
188,172
88.1%
['single-number-iii', 'count-triplets-that-can-form-two-arrays-of-equal-xor', 'decode-xored-array']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n vector<int> findArray(vector<int>& pref) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int[] findArray(int[] pref) {\n \n }\n}"}, {"value": "python", "text": "Python", "de...
[5,2,0,3,1]
{ "name": "findArray", "params": [ { "name": "pref", "type": "integer[]" } ], "return": { "type": "integer[]" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Bit Manipulation']
2,434
Using a Robot to Print the Lexicographically Smallest String
using-a-robot-to-print-the-lexicographically-smallest-string
<p>You are given a string <code>s</code> and a robot that currently holds an empty string <code>t</code>. Apply one of the following operations until <code>s</code> and <code>t</code> <strong>are both empty</strong>:</p> <ul> <li>Remove the <strong>first</strong> character of a string <code>s</code> and give it to th...
Medium
22.2K
53.6K
22,176
53,571
41.4%
['find-permutation']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n string robotWithString(string s) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public String robotWithString(String s) {\n \n }\n}"}, {"value": "python", "text": "Python", "defau...
"zza"
{ "name": "robotWithString", "params": [ { "name": "s", "type": "string" } ], "return": { "type": "string" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Hash Table', 'String', 'Stack', 'Greedy']
2,435
Paths in Matrix Whose Sum Is Divisible by K
paths-in-matrix-whose-sum-is-divisible-by-k
<p>You are given a <strong>0-indexed</strong> <code>m x n</code> integer matrix <code>grid</code> and an integer <code>k</code>. You are currently at position <code>(0, 0)</code> and you want to reach position <code>(m - 1, n - 1)</code> moving only <strong>down</strong> or <strong>right</strong>.</p> <p>Return<em> th...
Hard
27.1K
61.8K
27,096
61,775
43.9%
['unique-paths', 'unique-paths-ii', 'minimum-path-sum', 'dungeon-game', 'cherry-pickup', 'shortest-path-in-binary-matrix', 'minimum-cost-homecoming-of-a-robot-in-a-grid', 'check-if-there-is-a-path-with-equal-number-of-0s-and-1s']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int numberOfPaths(vector<vector<int>>& grid, int k) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int numberOfPaths(int[][] grid, int k) {\n \n }\n}"}, {"value": "python",...
[[5,2,4],[3,0,5],[0,7,2]] 3
{ "name": "numberOfPaths", "params": [ { "name": "grid", "type": "integer[][]" }, { "type": "integer", "name": "k" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Dynamic Programming', 'Matrix']
2,436
Minimum Split Into Subarrays With GCD Greater Than One
minimum-split-into-subarrays-with-gcd-greater-than-one
null
Medium
2.6K
3.7K
2,609
3,729
70.0%
['minimum-subarrays-in-a-valid-split']
[]
Algorithms
null
[12,6,3,14,8]
{ "name": "minimumSplits", "params": [ { "name": "nums", "type": "integer[]" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Math', 'Dynamic Programming', 'Greedy', 'Number Theory']
2,437
Number of Valid Clock Times
number-of-valid-clock-times
<p>You are given a string of length <code>5</code> called <code>time</code>, representing the current time on a digital clock in the format <code>&quot;hh:mm&quot;</code>. The <strong>earliest</strong> possible time is <code>&quot;00:00&quot;</code> and the <strong>latest</strong> possible time is <code>&quot;23:59&quo...
Easy
35.1K
74.3K
35,123
74,263
47.3%
['largest-time-for-given-digits', 'latest-time-by-replacing-hidden-digits']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int countTime(string time) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int countTime(String time) {\n \n }\n}"}, {"value": "python", "text": "Python", "defaultCode": "cl...
"?5:00"
{ "name": "countTime", "params": [ { "name": "time", "type": "string" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['String', 'Enumeration']
2,438
Range Product Queries of Powers
range-product-queries-of-powers
<p>Given a positive integer <code>n</code>, there exists a <strong>0-indexed</strong> array called <code>powers</code>, composed of the <strong>minimum</strong> number of powers of <code>2</code> that sum to <code>n</code>. The array is sorted in <strong>non-decreasing</strong> order, and there is <strong>only one</str...
Medium
18.4K
44.1K
18,375
44,124
41.6%
[]
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n vector<int> productQueries(int n, vector<vector<int>>& queries) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int[] productQueries(int n, int[][] queries) {\n \n }\n}"}, {...
15 [[0,1],[2,2],[0,3]]
{ "name": "productQueries", "params": [ { "name": "n", "type": "integer" }, { "type": "integer[][]", "name": "queries" } ], "return": { "type": "integer[]" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Bit Manipulation', 'Prefix Sum']
2,439
Minimize Maximum of Array
minimize-maximum-of-array
<p>You are given a <strong>0-indexed</strong> array <code>nums</code> comprising of <code>n</code> non-negative integers.</p> <p>In one operation, you must:</p> <ul> <li>Choose an integer <code>i</code> such that <code>1 &lt;= i &lt; n</code> and <code>nums[i] &gt; 0</code>.</li> <li>Decrease <code>nums[i]</code> b...
Medium
89.8K
193.6K
89,850
193,563
46.4%
['maximum-candies-allocated-to-k-children', 'minimum-speed-to-arrive-on-time', 'minimum-time-to-complete-trips']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int minimizeArrayValue(vector<int>& nums) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int minimizeArrayValue(int[] nums) {\n \n }\n}"}, {"value": "python", "text": "Pyth...
[3,7,1,6]
{ "name": "minimizeArrayValue", "params": [ { "name": "nums", "type": "integer[]" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Binary Search', 'Dynamic Programming', 'Greedy', 'Prefix Sum']
2,440
Create Components With Same Value
create-components-with-same-value
<p>There is an undirected tree with <code>n</code> nodes labeled from <code>0</code> to <code>n - 1</code>.</p> <p>You are given a <strong>0-indexed</strong> integer array <code><font face="monospace">nums</font></code> of length <code>n</code> where <code>nums[i]</code> represents the value of the <code>i<sup>th</sup...
Hard
8.7K
16.7K
8,703
16,726
52.0%
['equal-tree-partition', 'maximum-number-of-k-divisible-components']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int componentValue(vector<int>& nums, vector<vector<int>>& edges) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int componentValue(int[] nums, int[][] edges) {\n \n }\n}"}...
[6,2,2,2,6] [[0,1],[1,2],[1,3],[3,4]]
{ "name": "componentValue", "params": [ { "name": "nums", "type": "integer[]" }, { "type": "integer[][]", "name": "edges" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Math', 'Tree', 'Depth-First Search', 'Enumeration']
2,441
Largest Positive Integer That Exists With Its Negative
largest-positive-integer-that-exists-with-its-negative
<p>Given an integer array <code>nums</code> that <strong>does not contain</strong> any zeros, find <strong>the largest positive</strong> integer <code>k</code> such that <code>-k</code> also exists in the array.</p> <p>Return <em>the positive integer </em><code>k</code>. If there is no such integer, return <code>-1</c...
Easy
243.4K
325.8K
243,388
325,814
74.7%
['two-sum']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int findMaxK(vector<int>& nums) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int findMaxK(int[] nums) {\n \n }\n}"}, {"value": "python", "text": "Python", "defaultCode": ...
[-1,2,-3,3]
{ "name": "findMaxK", "params": [ { "name": "nums", "type": "integer[]" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Hash Table', 'Two Pointers', 'Sorting']
2,442
Count Number of Distinct Integers After Reverse Operations
count-number-of-distinct-integers-after-reverse-operations
<p>You are given an array <code>nums</code> consisting of <strong>positive</strong> integers.</p> <p>You have to take each integer in the array, <strong>reverse its digits</strong>, and add it to the end of the array. You should apply this operation to the original integers in <code>nums</code>.</p> <p>Return <em>the...
Medium
80K
100K
80,013
100,033
80.0%
['reverse-integer']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int countDistinctIntegers(vector<int>& nums) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int countDistinctIntegers(int[] nums) {\n \n }\n}"}, {"value": "python", "text":...
[1,13,10,12,31]
{ "name": "countDistinctIntegers", "params": [ { "name": "nums", "type": "integer[]" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Hash Table', 'Math', 'Counting']
2,443
Sum of Number and Its Reverse
sum-of-number-and-its-reverse
<p>Given a <strong>non-negative</strong> integer <code>num</code>, return <code>true</code><em> if </em><code>num</code><em> can be expressed as the sum of any <strong>non-negative</strong> integer and its reverse, or </em><code>false</code><em> otherwise.</em></p> <p>&nbsp;</p> <p><strong class="example">Example 1:</...
Medium
40.6K
84.6K
40,620
84,621
48.0%
['sum-of-numbers-with-units-digit-k']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n bool sumOfNumberAndReverse(int num) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public boolean sumOfNumberAndReverse(int num) {\n \n }\n}"}, {"value": "python", "text": "Python...
443
{ "name": "sumOfNumberAndReverse", "params": [ { "name": "num", "type": "integer" } ], "return": { "type": "boolean" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Math', 'Enumeration']
2,444
Count Subarrays With Fixed Bounds
count-subarrays-with-fixed-bounds
<p>You are given an integer array <code>nums</code> and two integers <code>minK</code> and <code>maxK</code>.</p> <p>A <strong>fixed-bound subarray</strong> of <code>nums</code> is a subarray that satisfies the following conditions:</p> <ul> <li>The <strong>minimum</strong> value in the subarray is equal to <code>mi...
Hard
152.7K
225.6K
152,679
225,586
67.7%
['count-number-of-nice-subarrays', 'longest-continuous-subarray-with-absolute-diff-less-than-or-equal-to-limit', 'find-the-number-of-subarrays-where-boundary-elements-are-maximum']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n long long countSubarrays(vector<int>& nums, int minK, int maxK) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public long countSubarrays(int[] nums, int minK, int maxK) {\n \n }\...
[1,3,5,2,7,5] 1 5
{ "name": "countSubarrays", "params": [ { "name": "nums", "type": "integer[]" }, { "type": "integer", "name": "minK" }, { "type": "integer", "name": "maxK" } ], "return": { "type": "long" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Queue', 'Sliding Window', 'Monotonic Queue']
2,445
Number of Nodes With Value One
number-of-nodes-with-value-one
null
Medium
2.4K
3.7K
2,432
3,708
65.6%
[]
[]
Algorithms
null
5 [1,2,5]
{ "name": "numberOfNodes", "params": [ { "name": "n", "type": "integer" }, { "type": "integer[]", "name": "queries" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Tree', 'Depth-First Search', 'Breadth-First Search', 'Binary Tree']
2,446
Determine if Two Events Have Conflict
determine-if-two-events-have-conflict
<p>You are given two arrays of strings that represent two inclusive events that happened <strong>on the same day</strong>, <code>event1</code> and <code>event2</code>, where:</p> <ul> <li><code>event1 = [startTime<sub>1</sub>, endTime<sub>1</sub>]</code> and</li> <li><code>event2 = [startTime<sub>2</sub>, endTime<su...
Easy
55.1K
105.6K
55,056
105,584
52.1%
['merge-intervals', 'non-overlapping-intervals', 'my-calendar-i']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n bool haveConflict(vector<string>& event1, vector<string>& event2) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public boolean haveConflict(String[] event1, String[] event2) {\n \n ...
["01:15","02:00"] ["02:00","03:00"]
{ "name": "haveConflict", "params": [ { "name": "event1", "type": "string[]" }, { "type": "string[]", "name": "event2" } ], "return": { "type": "boolean" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'String']
2,447
Number of Subarrays With GCD Equal to K
number-of-subarrays-with-gcd-equal-to-k
<p>Given an integer array <code>nums</code> and an integer <code>k</code>, return <em>the number of <strong>subarrays</strong> of </em><code>nums</code><em> where the greatest common divisor of the subarray&#39;s elements is </em><code>k</code>.</p> <p>A <strong>subarray</strong> is a contiguous non-empty sequence of ...
Medium
29.5K
58K
29,464
57,962
50.8%
['find-greatest-common-divisor-of-array', 'number-of-subarrays-with-lcm-equal-to-k']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int subarrayGCD(vector<int>& nums, int k) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int subarrayGCD(int[] nums, int k) {\n \n }\n}"}, {"value": "python", "text": "Pyth...
[9,3,1,2,6,3] 3
{ "name": "subarrayGCD", "params": [ { "name": "nums", "type": "integer[]" }, { "type": "integer", "name": "k" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Math', 'Number Theory']
2,448
Minimum Cost to Make Array Equal
minimum-cost-to-make-array-equal
<p>You are given two <strong>0-indexed</strong> arrays <code>nums</code> and <code>cost</code> consisting each of <code>n</code> <strong>positive</strong> integers.</p> <p>You can do the following operation <strong>any</strong> number of times:</p> <ul> <li>Increase or decrease <strong>any</strong> element of the ar...
Hard
71K
153.7K
70,974
153,694
46.2%
['minimum-moves-to-equal-array-elements-ii', 'maximum-product-of-the-length-of-two-palindromic-substrings', 'minimum-amount-of-time-to-fill-cups', 'minimum-operations-to-make-all-array-elements-equal', 'minimum-cost-to-make-array-equalindromic']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n long long minCost(vector<int>& nums, vector<int>& cost) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public long minCost(int[] nums, int[] cost) {\n \n }\n}"}, {"value": "python...
[1,3,5,2] [2,3,1,14]
{ "name": "minCost", "params": [ { "name": "nums", "type": "integer[]" }, { "type": "integer[]", "name": "cost" } ], "return": { "type": "long" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Binary Search', 'Greedy', 'Sorting', 'Prefix Sum']
2,449
Minimum Number of Operations to Make Arrays Similar
minimum-number-of-operations-to-make-arrays-similar
<p>You are given two positive integer arrays <code>nums</code> and <code>target</code>, of the same length.</p> <p>In one operation, you can choose any two <strong>distinct</strong> indices <code>i</code> and <code>j</code> where <code>0 &lt;= i, j &lt; nums.length</code> and:</p> <ul> <li>set <code>nums[i] = nums[i...
Hard
14.7K
24.4K
14,670
24,366
60.2%
['minimum-operations-to-make-array-equal', 'minimum-operations-to-make-array-equal-ii', 'rearranging-fruits']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n long long makeSimilar(vector<int>& nums, vector<int>& target) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public long makeSimilar(int[] nums, int[] target) {\n \n }\n}"}, {"val...
[8,12,6] [2,14,10]
{ "name": "makeSimilar", "params": [ { "name": "nums", "type": "integer[]" }, { "type": "integer[]", "name": "target" } ], "return": { "type": "long" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Greedy', 'Sorting']
2,450
Number of Distinct Binary Strings After Applying Operations
number-of-distinct-binary-strings-after-applying-operations
null
Medium
1.2K
1.9K
1,227
1,934
63.4%
['minimum-number-of-k-consecutive-bit-flips']
[]
Algorithms
null
"1001" 3
{ "name": "countDistinctStrings", "params": [ { "name": "s", "type": "string" }, { "type": "integer", "name": "k" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Math', 'String']
2,451
Odd String Difference
odd-string-difference
<p>You are given an array of equal-length strings <code>words</code>. Assume that the length of each string is <code>n</code>.</p> <p>Each string <code>words[i]</code> can be converted into a <strong>difference integer array</strong> <code>difference[i]</code> of length <code>n - 1</code> where <code>difference[i][j] ...
Easy
37.2K
61.2K
37,243
61,242
60.8%
['minimum-rounds-to-complete-all-tasks']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n string oddString(vector<string>& words) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public String oddString(String[] words) {\n \n }\n}"}, {"value": "python", "text": "Python",...
["adc","wzy","abc"]
{ "name": "oddString", "params": [ { "name": "words", "type": "string[]" } ], "return": { "type": "string" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Hash Table', 'String']
2,452
Words Within Two Edits of Dictionary
words-within-two-edits-of-dictionary
<p>You are given two string arrays, <code>queries</code> and <code>dictionary</code>. All words in each array comprise of lowercase English letters and have the same length.</p> <p>In one <strong>edit</strong> you can take a word from <code>queries</code>, and change any letter in it to any other letter. Find all word...
Medium
25.7K
42K
25,702
42,011
61.2%
['word-ladder']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n vector<string> twoEditWords(vector<string>& queries, vector<string>& dictionary) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public List<String> twoEditWords(String[] queries, String[] d...
["word","note","ants","wood"] ["wood","joke","moat"]
{ "name": "twoEditWords", "params": [ { "name": "queries", "type": "string[]" }, { "type": "string[]", "name": "dictionary" } ], "return": { "type": "list<string>" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'String', 'Trie']
2,453
Destroy Sequential Targets
destroy-sequential-targets
<p>You are given a <strong>0-indexed</strong> array <code>nums</code> consisting of positive integers, representing targets on a number line. You are also given an integer <code>space</code>.</p> <p>You have a machine which can destroy targets. <strong>Seeding</strong> the machine with some <code>nums[i]</code> allows...
Medium
20.3K
50.3K
20,316
50,347
40.4%
['arithmetic-slices-ii-subsequence', 'pairs-of-songs-with-total-durations-divisible-by-60', 'longest-arithmetic-subsequence', 'longest-arithmetic-subsequence-of-given-difference']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int destroyTargets(vector<int>& nums, int space) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int destroyTargets(int[] nums, int space) {\n \n }\n}"}, {"value": "python",...
[3,7,8,1,1,5] 2
{ "name": "destroyTargets", "params": [ { "name": "nums", "type": "integer[]" }, { "type": "integer", "name": "space" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Hash Table', 'Counting']
2,454
Next Greater Element IV
next-greater-element-iv
<p>You are given a <strong>0-indexed</strong> array of non-negative integers <code>nums</code>. For each integer in <code>nums</code>, you must find its respective <strong>second greater</strong> integer.</p> <p>The <strong>second greater</strong> integer of <code>nums[i]</code> is <code>nums[j]</code> such that:</p> ...
Hard
13.8K
34.7K
13,795
34,747
39.7%
['next-greater-element-i', 'replace-elements-with-greatest-element-on-right-side', 'apply-operations-to-maximize-score']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n vector<int> secondGreaterElement(vector<int>& nums) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int[] secondGreaterElement(int[] nums) {\n \n }\n}"}, {"value": "python",...
[2,4,0,9,6]
{ "name": "secondGreaterElement", "params": [ { "name": "nums", "type": "integer[]" } ], "return": { "type": "integer[]" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Binary Search', 'Stack', 'Sorting', 'Heap (Priority Queue)', 'Monotonic Stack']
2,455
Average Value of Even Numbers That Are Divisible by Three
average-value-of-even-numbers-that-are-divisible-by-three
<p>Given an integer array <code>nums</code> of <strong>positive</strong> integers, return <em>the average value of all even integers that are divisible by</em> <code>3</code><i>.</i></p> <p>Note that the <strong>average</strong> of <code>n</code> elements is the <strong>sum</strong> of the <code>n</code> elements divi...
Easy
72.8K
119.1K
72,813
119,078
61.1%
['binary-prefix-divisible-by-5']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int averageValue(vector<int>& nums) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int averageValue(int[] nums) {\n \n }\n}"}, {"value": "python", "text": "Python", "defaul...
[1,3,6,10,12,15]
{ "name": "averageValue", "params": [ { "name": "nums", "type": "integer[]" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Math']
2,456
Most Popular Video Creator
most-popular-video-creator
<p>You are given two string arrays <code>creators</code> and <code>ids</code>, and an integer array <code>views</code>, all of length <code>n</code>. The <code>i<sup>th</sup></code> video on a platform was created by <code>creators[i]</code>, has an id of <code>ids[i]</code>, and has <code>views[i]</code> views.</p> <...
Medium
25.4K
57.4K
25,426
57,367
44.3%
['design-video-sharing-platform', 'design-a-food-rating-system']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n vector<vector<string>> mostPopularCreator(vector<string>& creators, vector<string>& ids, vector<int>& views) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public List<List<String>> mostPop...
["alice","bob","alice","chris"] ["one","two","three","four"] [5,10,5,4]
{ "name": "mostPopularCreator", "params": [ { "name": "creators", "type": "string[]" }, { "type": "string[]", "name": "ids" }, { "type": "integer[]", "name": "views" } ], "return": { "type": "list<list<string>>" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Hash Table', 'String', 'Sorting', 'Heap (Priority Queue)']
2,457
Minimum Addition to Make Integer Beautiful
minimum-addition-to-make-integer-beautiful
<p>You are given two positive integers <code>n</code> and <code>target</code>.</p> <p>An integer is considered <strong>beautiful</strong> if the sum of its digits is less than or equal to <code>target</code>.</p> <p>Return the <em>minimum <strong>non-negative</strong> integer </em><code>x</code><em> such that </em><c...
Medium
22.2K
58.7K
22,202
58,667
37.8%
['happy-number']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n long long makeIntegerBeautiful(long long n, int target) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public long makeIntegerBeautiful(long n, int target) {\n \n }\n}"}, {"value"...
16 6
{ "name": "makeIntegerBeautiful", "params": [ { "name": "n", "type": "long" }, { "type": "integer", "name": "target" } ], "return": { "type": "long" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Math', 'Greedy']
2,458
Height of Binary Tree After Subtree Removal Queries
height-of-binary-tree-after-subtree-removal-queries
<p>You are given the <code>root</code> of a <strong>binary tree</strong> with <code>n</code> nodes. Each node is assigned a unique value from <code>1</code> to <code>n</code>. You are also given an array <code>queries</code> of size <code>m</code>.</p> <p>You have to perform <code>m</code> <strong>independent</strong>...
Hard
101K
183.8K
100,958
183,796
54.9%
['maximum-depth-of-binary-tree']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "/**\n * Definition for a binary tree node.\n * struct TreeNode {\n * int val;\n * TreeNode *left;\n * TreeNode *right;\n * TreeNode() : val(0), left(nullptr), right(nullptr) {}\n * TreeNode(int x) : val(x), left(nullptr), right(nullptr) {}\n * Tre...
[1,3,4,2,null,6,5,null,null,null,null,null,7] [4]
{ "name": "treeQueries", "params": [ { "name": "root", "type": "TreeNode" }, { "type": "integer[]", "name": "queries" } ], "return": { "type": "integer[]" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Tree', 'Depth-First Search', 'Breadth-First Search', 'Binary Tree']
2,459
Sort Array by Moving Items to Empty Space
sort-array-by-moving-items-to-empty-space
null
Hard
2.4K
5.5K
2,448
5,499
44.5%
['course-schedule-ii', 'strange-printer-ii', 'create-sorted-array-through-instructions']
[]
Algorithms
null
[4,2,0,3,1]
{ "name": "sortArray", "params": [ { "name": "nums", "type": "integer[]" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Greedy', 'Sorting']
2,460
Apply Operations to an Array
apply-operations-to-an-array
<p>You are given a <strong>0-indexed</strong> array <code>nums</code> of size <code>n</code> consisting of <strong>non-negative</strong> integers.</p> <p>You need to apply <code>n - 1</code> operations to this array where, in the <code>i<sup>th</sup></code> operation (<strong>0-indexed</strong>), you will apply the fo...
Easy
235.7K
314.8K
235,718
314,798
74.9%
['remove-duplicates-from-sorted-array', 'move-zeroes']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n vector<int> applyOperations(vector<int>& nums) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int[] applyOperations(int[] nums) {\n \n }\n}"}, {"value": "python", "text": "...
[1,2,2,1,1,0]
{ "name": "applyOperations", "params": [ { "name": "nums", "type": "integer[]" } ], "return": { "type": "integer[]" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Two Pointers', 'Simulation']
2,461
Maximum Sum of Distinct Subarrays With Length K
maximum-sum-of-distinct-subarrays-with-length-k
<p>You are given an integer array <code>nums</code> and an integer <code>k</code>. Find the maximum subarray sum of all the subarrays of <code>nums</code> that meet the following conditions:</p> <ul> <li>The length of the subarray is <code>k</code>, and</li> <li>All the elements of the subarray are <strong>distinct<...
Medium
201.7K
472.6K
201,681
472,603
42.7%
['max-consecutive-ones-iii', 'longest-nice-subarray', 'optimal-partition-of-string', 'count-the-number-of-good-subarrays', 'maximum-good-subarray-sum', 'find-the-power-of-k-size-subarrays-i', 'find-the-power-of-k-size-subarrays-ii']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n long long maximumSubarraySum(vector<int>& nums, int k) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public long maximumSubarraySum(int[] nums, int k) {\n \n }\n}"}, {"value": "p...
[1,5,4,2,9,9,9] 3
{ "name": "maximumSubarraySum", "params": [ { "name": "nums", "type": "integer[]" }, { "type": "integer", "name": "k" } ], "return": { "type": "long" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Hash Table', 'Sliding Window']
2,462
Total Cost to Hire K Workers
total-cost-to-hire-k-workers
<p>You are given a <strong>0-indexed</strong> integer array <code>costs</code> where <code>costs[i]</code> is the cost of hiring the <code>i<sup>th</sup></code> worker.</p> <p>You are also given two integers <code>k</code> and <code>candidates</code>. We want to hire exactly <code>k</code> workers according to the fol...
Medium
133.5K
310.8K
133,468
310,787
42.9%
['meeting-rooms-ii', 'time-to-cross-a-bridge']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n long long totalCost(vector<int>& costs, int k, int candidates) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public long totalCost(int[] costs, int k, int candidates) {\n \n }\n}...
[17,12,10,2,7,2,11,20,8] 3 4
{ "name": "totalCost", "params": [ { "name": "costs", "type": "integer[]" }, { "type": "integer", "name": "k" }, { "type": "integer", "name": "candidates" } ], "return": { "type": "long" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Two Pointers', 'Heap (Priority Queue)', 'Simulation']
2,463
Minimum Total Distance Traveled
minimum-total-distance-traveled
<p>There are some robots and factories on the X-axis. You are given an integer array <code>robot</code> where <code>robot[i]</code> is the position of the <code>i<sup>th</sup></code> robot. You are also given a 2D integer array <code>factory</code> where <code>factory[j] = [position<sub>j</sub>, limit<sub>j</sub>]</cod...
Hard
73.5K
124.5K
73,500
124,469
59.1%
['capacity-to-ship-packages-within-d-days', 'number-of-ways-to-earn-points']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n long long minimumTotalDistance(vector<int>& robot, vector<vector<int>>& factory) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public long minimumTotalDistance(List<Integer> robot, int[][]...
[0,4,6] [[2,2],[6,2]]
{ "name": "minimumTotalDistance", "params": [ { "name": "robot", "type": "list<integer>" }, { "type": "integer[][]", "name": "factory" } ], "return": { "type": "long" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Dynamic Programming', 'Sorting']
2,464
Minimum Subarrays in a Valid Split
minimum-subarrays-in-a-valid-split
null
Medium
1.4K
2.5K
1,377
2,532
54.4%
['minimum-split-into-subarrays-with-gcd-greater-than-one']
[]
Algorithms
null
[2,6,3,4,3]
{ "name": "validSubarraySplit", "params": [ { "name": "nums", "type": "integer[]" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Math', 'Dynamic Programming', 'Number Theory']
2,465
Number of Distinct Averages
number-of-distinct-averages
<p>You are given a <strong>0-indexed</strong> integer array <code>nums</code> of <strong>even</strong> length.</p> <p>As long as <code>nums</code> is <strong>not</strong> empty, you must repetitively:</p> <ul> <li>Find the minimum number in <code>nums</code> and remove it.</li> <li>Find the maximum number in <code>...
Easy
59.7K
102.3K
59,674
102,253
58.4%
['two-sum', 'finding-pairs-with-a-certain-sum', 'minimum-average-of-smallest-and-largest-elements']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int distinctAverages(vector<int>& nums) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int distinctAverages(int[] nums) {\n \n }\n}"}, {"value": "python", "text": "Python",...
[4,1,4,0,3,5]
{ "name": "distinctAverages", "params": [ { "type": "integer[]", "name": "nums" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Hash Table', 'Two Pointers', 'Sorting']
2,466
Count Ways To Build Good Strings
count-ways-to-build-good-strings
<p>Given the integers <code>zero</code>, <code>one</code>, <code>low</code>, and <code>high</code>, we can construct a string by starting with an empty string, and then at each step perform either of the following:</p> <ul> <li>Append the character <code>&#39;0&#39;</code> <code>zero</code> times.</li> <li>Append th...
Medium
168.3K
284K
168,280
283,998
59.3%
['climbing-stairs']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int countGoodStrings(int low, int high, int zero, int one) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int countGoodStrings(int low, int high, int zero, int one) {\n \n ...
3 3 1 1
{ "name": "countGoodStrings", "params": [ { "name": "low", "type": "integer" }, { "type": "integer", "name": "high" }, { "type": "integer", "name": "zero" }, { "type": "integer", "name": "one" } ], "return": { "type": "integer" ...
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Dynamic Programming']
2,467
Most Profitable Path in a Tree
most-profitable-path-in-a-tree
<p>There is an undirected tree with <code>n</code> nodes labeled from <code>0</code> to <code>n - 1</code>, rooted at node <code>0</code>. You are given a 2D integer array <code>edges</code> of length <code>n - 1</code> where <code>edges[i] = [a<sub>i</sub>, b<sub>i</sub>]</code> indicates that there is an edge between...
Medium
100.6K
148.4K
100,599
148,393
67.8%
['snakes-and-ladders', 'time-taken-to-mark-all-nodes']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int mostProfitablePath(vector<vector<int>>& edges, int bob, vector<int>& amount) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int mostProfitablePath(int[][] edges, int bob, int[] a...
[[0,1],[1,2],[1,3],[3,4]] 3 [-2,4,2,-4,6]
{ "name": "mostProfitablePath", "params": [ { "name": "edges", "type": "integer[][]" }, { "type": "integer", "name": "bob" }, { "type": "integer[]", "name": "amount" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Tree', 'Depth-First Search', 'Breadth-First Search', 'Graph']
2,468
Split Message Based on Limit
split-message-based-on-limit
<p>You are given a string, <code>message</code>, and a positive integer, <code>limit</code>.</p> <p>You must <strong>split</strong> <code>message</code> into one or more <strong>parts</strong> based on <code>limit</code>. Each resulting part should have the suffix <code>&quot;&lt;a/b&gt;&quot;</code>, where <code>&quo...
Hard
16.6K
38.6K
16,603
38,633
43.0%
['text-justification', 'search-a-2d-matrix', 'sentence-screen-fitting']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n vector<string> splitMessage(string message, int limit) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public String[] splitMessage(String message, int limit) {\n \n }\n}"}, {"valu...
"this is really a very awesome message" 9
{ "name": "splitMessage", "params": [ { "name": "message", "type": "string" }, { "type": "integer", "name": "limit" } ], "return": { "type": "string[]" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['String', 'Binary Search', 'Enumeration']
2,469
Convert the Temperature
convert-the-temperature
<p>You are given a non-negative floating point number rounded to two decimal places <code>celsius</code>, that denotes the <strong>temperature in Celsius</strong>.</p> <p>You should convert Celsius into <strong>Kelvin</strong> and <strong>Fahrenheit</strong> and return it as an array <code>ans = [kelvin, fahrenheit]</...
Easy
240.3K
266.8K
240,272
266,802
90.1%
['smallest-even-multiple']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n vector<double> convertTemperature(double celsius) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public double[] convertTemperature(double celsius) {\n \n }\n}"}, {"value": "pytho...
36.50
{ "name": "convertTemperature", "params": [ { "name": "celsius", "type": "double" } ], "return": { "type": "double[]" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Math']
2,470
Number of Subarrays With LCM Equal to K
number-of-subarrays-with-lcm-equal-to-k
<p>Given an integer array <code>nums</code> and an integer <code>k</code>, return <em>the number of <strong>subarrays</strong> of </em><code>nums</code><em> where the least common multiple of the subarray&#39;s elements is </em><code>k</code>.</p> <p>A <strong>subarray</strong> is a contiguous non-empty sequence of el...
Medium
24.8K
62.7K
24,827
62,682
39.6%
['number-of-subarrays-with-gcd-equal-to-k']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int subarrayLCM(vector<int>& nums, int k) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int subarrayLCM(int[] nums, int k) {\n \n }\n}"}, {"value": "python", "text": "Pyth...
[3,6,2,7,1] 6
{ "name": "subarrayLCM", "params": [ { "name": "nums", "type": "integer[]" }, { "type": "integer", "name": "k" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Math', 'Number Theory']
2,471
Minimum Number of Operations to Sort a Binary Tree by Level
minimum-number-of-operations-to-sort-a-binary-tree-by-level
<p>You are given the <code>root</code> of a binary tree with <strong>unique values</strong>.</p> <p>In one operation, you can choose any two nodes <strong>at the same level</strong> and swap their values.</p> <p>Return <em>the minimum number of operations needed to make the values at each level sorted in a <strong>st...
Medium
106.3K
143.1K
106,262
143,060
74.3%
['binary-tree-level-order-traversal', 'longest-cycle-in-a-graph']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "/**\n * Definition for a binary tree node.\n * struct TreeNode {\n * int val;\n * TreeNode *left;\n * TreeNode *right;\n * TreeNode() : val(0), left(nullptr), right(nullptr) {}\n * TreeNode(int x) : val(x), left(nullptr), right(nullptr) {}\n * Tre...
[1,4,3,7,6,8,5,null,null,null,null,9,null,10]
{ "name": "minimumOperations", "params": [ { "name": "root", "type": "TreeNode" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Tree', 'Breadth-First Search', 'Binary Tree']
2,472
Maximum Number of Non-overlapping Palindrome Substrings
maximum-number-of-non-overlapping-palindrome-substrings
<p>You are given a string <code>s</code> and a <strong>positive</strong> integer <code>k</code>.</p> <p>Select a set of <strong>non-overlapping</strong> substrings from the string <code>s</code> that satisfy the following conditions:</p> <ul> <li>The <strong>length</strong> of each substring is <strong>at least</str...
Hard
19K
46K
18,990
46,005
41.3%
['longest-palindromic-substring', 'palindrome-partitioning', 'palindrome-partitioning-ii', 'palindrome-partitioning-iii', 'maximum-number-of-non-overlapping-substrings', 'palindrome-partitioning-iv']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int maxPalindromes(string s, int k) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int maxPalindromes(String s, int k) {\n \n }\n}"}, {"value": "python", "text": "Python", ...
"abaccdbbd" 3
{ "name": "maxPalindromes", "params": [ { "name": "s", "type": "string" }, { "type": "integer", "name": "k" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Two Pointers', 'String', 'Dynamic Programming', 'Greedy']
2,473
Minimum Cost to Buy Apples
minimum-cost-to-buy-apples
null
Medium
6.8K
10.1K
6,773
10,081
67.2%
[]
[]
Algorithms
null
4 [[1,2,4],[2,3,2],[2,4,5],[3,4,1],[1,3,4]] [56,42,102,301] 2
{ "name": "minCost", "params": [ { "name": "n", "type": "integer" }, { "type": "integer[][]", "name": "roads" }, { "type": "integer[]", "name": "appleCost" }, { "type": "integer", "name": "k" } ], "return": { "type": "long[]" ...
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Graph', 'Heap (Priority Queue)', 'Shortest Path']
2,474
Customers With Strictly Increasing Purchases
customers-with-strictly-increasing-purchases
null
Hard
4.5K
9.3K
4,482
9,347
48.0%
['report-contiguous-dates', 'find-the-start-and-end-number-of-continuous-ranges']
['Create table If Not Exists Orders (order_id int, customer_id int, order_date date, price int)', 'Truncate table Orders', "insert into Orders (order_id, customer_id, order_date, price) values ('1', '1', '2019-07-01', '1100')", "insert into Orders (order_id, customer_id, order_date, price) values ('2', '1', '2019-11-01...
Database
null
{"headers": {"Orders": ["order_id", "customer_id", "order_date", "price"]}, "rows": {"Orders": [[1, 1, "2019-07-01", 1100], [2, 1, "2019-11-01", 1200], [3, 1, "2020-05-26", 3000], [4, 1, "2021-08-31", 3100], [5, 1, "2022-12-07", 4700], [6, 2, "2015-01-01", 700], [7, 2, "2017-11-07", 1000], [8, 3, "2017-01-01", 900], [9...
{"mysql": ["Create table If Not Exists Orders (order_id int, customer_id int, order_date date, price int)"], "mssql": ["Create table Orders (order_id int, customer_id int, order_date date, price int)"], "oraclesql": ["Create table Orders (order_id int, customer_id int, order_date date, price int)", "ALTER SESSION SET n...
{"mysql": ["MySQL", "<p><code>MySQL 8.0</code>.</p>"], "mssql": ["MS SQL Server", "<p><code>mssql server 2019</code>.</p>"], "oraclesql": ["Oracle", "<p><code>Oracle Sql 11.2</code>.</p>"], "pythondata": ["Pandas", "<p>Python 3.10 with Pandas 2.2.2 and NumPy 1.26.4</p>"], "postgresql": ["PostgreSQL", "<p>PostgreSQL 16<...
['Database']
2,475
Number of Unequal Triplets in Array
number-of-unequal-triplets-in-array
<p>You are given a <strong>0-indexed</strong> array of positive integers <code>nums</code>. Find the number of triplets <code>(i, j, k)</code> that meet the following conditions:</p> <ul> <li><code>0 &lt;= i &lt; j &lt; k &lt; nums.length</code></li> <li><code>nums[i]</code>, <code>nums[j]</code>, and <code>nums[k]<...
Easy
50.6K
70.2K
50,568
70,174
72.1%
['count-good-triplets', 'count-square-sum-triples', 'number-of-arithmetic-triplets']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int unequalTriplets(vector<int>& nums) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int unequalTriplets(int[] nums) {\n \n }\n}"}, {"value": "python", "text": "Python", "...
[4,4,2,4,3]
{ "name": "unequalTriplets", "params": [ { "name": "nums", "type": "integer[]" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Hash Table', 'Sorting']
2,476
Closest Nodes Queries in a Binary Search Tree
closest-nodes-queries-in-a-binary-search-tree
<p>You are given the <code>root</code> of a <strong>binary search tree </strong>and an array <code>queries</code> of size <code>n</code> consisting of positive integers.</p> <p>Find a <strong>2D</strong> array <code>answer</code> of size <code>n</code> where <code>answer[i] = [min<sub>i</sub>, max<sub>i</sub>]</code>:...
Medium
29.9K
70.8K
29,868
70,826
42.2%
['closest-binary-search-tree-value', 'closest-binary-search-tree-value-ii', 'search-in-a-binary-search-tree']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "/**\n * Definition for a binary tree node.\n * struct TreeNode {\n * int val;\n * TreeNode *left;\n * TreeNode *right;\n * TreeNode() : val(0), left(nullptr), right(nullptr) {}\n * TreeNode(int x) : val(x), left(nullptr), right(nullptr) {}\n * Tre...
[6,2,13,1,4,9,15,null,null,null,null,null,null,14] [2,5,16]
{ "name": "closestNodes", "params": [ { "name": "root", "type": "TreeNode" }, { "type": "list<integer>", "name": "queries" } ], "return": { "type": "list<list<integer>>" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Binary Search', 'Tree', 'Depth-First Search', 'Binary Search Tree', 'Binary Tree']
2,477
Minimum Fuel Cost to Report to the Capital
minimum-fuel-cost-to-report-to-the-capital
<p>There is a tree (i.e., a connected, undirected graph with no cycles) structure country network consisting of <code>n</code> cities numbered from <code>0</code> to <code>n - 1</code> and exactly <code>n - 1</code> roads. The capital city is city <code>0</code>. You are given a 2D integer array <code>roads</code> wher...
Medium
78.1K
121.6K
78,107
121,632
64.2%
['binary-tree-postorder-traversal']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n long long minimumFuelCost(vector<vector<int>>& roads, int seats) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public long minimumFuelCost(int[][] roads, int seats) {\n \n }\n}"}...
[[0,1],[0,2],[0,3]] 5
{ "name": "minimumFuelCost", "params": [ { "name": "roads", "type": "integer[][]" }, { "type": "integer", "name": "seats" } ], "return": { "type": "long" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Tree', 'Depth-First Search', 'Breadth-First Search', 'Graph']
2,478
Number of Beautiful Partitions
number-of-beautiful-partitions
<p>You are given a string <code>s</code> that consists of the digits <code>&#39;1&#39;</code> to <code>&#39;9&#39;</code> and two integers <code>k</code> and <code>minLength</code>.</p> <p>A partition of <code>s</code> is called <strong>beautiful</strong> if:</p> <ul> <li><code>s</code> is partitioned into <code>k</...
Hard
11.9K
37K
11,864
37,038
32.0%
['restore-the-array', 'number-of-ways-to-separate-numbers']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int beautifulPartitions(string s, int k, int minLength) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int beautifulPartitions(String s, int k, int minLength) {\n \n }\n}"}...
"23542185131" 3 2
{ "name": "beautifulPartitions", "params": [ { "name": "s", "type": "string" }, { "type": "integer", "name": "k" }, { "type": "integer", "name": "minLength" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['String', 'Dynamic Programming']
2,479
Maximum XOR of Two Non-Overlapping Subtrees
maximum-xor-of-two-non-overlapping-subtrees
null
Hard
806
1.6K
806
1,630
49.4%
[]
[]
Algorithms
null
6 [[0,1],[0,2],[1,3],[1,4],[2,5]] [2,8,3,6,2,5]
{ "name": "maxXor", "params": [ { "type": "integer", "name": "n" }, { "type": "integer[][]", "name": "edges" }, { "type": "integer[]", "name": "values" } ], "return": { "type": "long" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Tree', 'Depth-First Search', 'Graph', 'Trie']
2,480
Form a Chemical Bond
form-a-chemical-bond
null
Easy
6K
7.6K
5,986
7,621
78.5%
[]
["Create table If Not Exists Elements (symbol varchar(2), type ENUM('Metal','Nonmetal','Noble'), electrons int)", 'Truncate table Elements', "insert into Elements (symbol, type, electrons) values ('He', 'Noble', '0')", "insert into Elements (symbol, type, electrons) values ('Na', 'Metal', '1')", "insert into Elements (...
Database
null
{"headers": {"Elements": ["symbol", "type", "electrons"]}, "rows": {"Elements": [["He", "Noble", 0], ["Na", "Metal", 1], ["Ca", "Metal", 2], ["La", "Metal", 3], ["Cl", "Nonmetal", 1], ["O", "Nonmetal", 2], ["N", "Nonmetal", 3]]}}
{"mysql": ["Create table If Not Exists Elements (symbol varchar(2), type ENUM('Metal','Nonmetal','Noble'), electrons int)"], "mssql": ["Create table Elements (symbol varchar(2), type varchar(8) not null check(type in ('Metal','Nonmetal','Noble')), electrons int)\n"], "oraclesql": ["Create table Elements (symbol varchar...
{"mysql": ["MySQL", "<p><code>MySQL 8.0</code>.</p>"], "mssql": ["MS SQL Server", "<p><code>mssql server 2019</code>.</p>"], "oraclesql": ["Oracle", "<p><code>Oracle Sql 11.2</code>.</p>"], "pythondata": ["Pandas", "<p>Python 3.10 with Pandas 2.2.2 and NumPy 1.26.4</p>"], "postgresql": ["PostgreSQL", "<p>PostgreSQL 16<...
['Database']
2,481
Minimum Cuts to Divide a Circle
minimum-cuts-to-divide-a-circle
<p>A <strong>valid cut</strong> in a circle can be:</p> <ul> <li>A cut that is represented by a straight line that touches two points on the edge of the circle and passes through its center, or</li> <li>A cut that is represented by a straight line that touches one point on the edge of the circle and its center.</li>...
Easy
51K
92.8K
50,961
92,816
54.9%
['smallest-even-multiple', 'count-total-number-of-colored-cells']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int numberOfCuts(int n) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int numberOfCuts(int n) {\n \n }\n}"}, {"value": "python", "text": "Python", "defaultCode": "class So...
4
{ "name": "numberOfCuts", "params": [ { "name": "n", "type": "integer" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Math', 'Geometry']
2,482
Difference Between Ones and Zeros in Row and Column
difference-between-ones-and-zeros-in-row-and-column
<p>You are given a <strong>0-indexed</strong> <code>m x n</code> binary matrix <code>grid</code>.</p> <p>A <strong>0-indexed</strong> <code>m x n</code> difference matrix <code>diff</code> is created with the following procedure:</p> <ul> <li>Let the number of ones in the <code>i<sup>th</sup></code> row be <code>one...
Medium
134.8K
159.9K
134,787
159,944
84.3%
['01-matrix', 'special-positions-in-a-binary-matrix', 'remove-all-ones-with-row-and-column-flips', 'first-completely-painted-row-or-column']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n vector<vector<int>> onesMinusZeros(vector<vector<int>>& grid) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int[][] onesMinusZeros(int[][] grid) {\n \n }\n}"}, {"value": "...
[[0,1,1],[1,0,1],[0,0,1]]
{ "name": "onesMinusZeros", "params": [ { "name": "grid", "type": "integer[][]" } ], "return": { "type": "integer[][]" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Matrix', 'Simulation']
2,483
Minimum Penalty for a Shop
minimum-penalty-for-a-shop
<p>You are given the customer visit log of a shop represented by a <strong>0-indexed</strong> string <code>customers</code> consisting only of characters <code>&#39;N&#39;</code> and <code>&#39;Y&#39;</code>:</p> <ul> <li>if the <code>i<sup>th</sup></code> character is <code>&#39;Y&#39;</code>, it means that customer...
Medium
122.1K
180.8K
122,125
180,786
67.6%
['grid-game', 'minimum-amount-of-damage-dealt-to-bob']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int bestClosingTime(string customers) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int bestClosingTime(String customers) {\n \n }\n}"}, {"value": "python", "text": "Pytho...
"YYNY"
{ "name": "bestClosingTime", "params": [ { "name": "customers", "type": "string" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['String', 'Prefix Sum']
2,484
Count Palindromic Subsequences
count-palindromic-subsequences
<p>Given a string of digits <code>s</code>, return <em>the number of <strong>palindromic subsequences</strong> of</em> <code>s</code><em> having length </em><code>5</code>. Since the answer may be very large, return it <strong>modulo</strong> <code>10<sup>9</sup> + 7</code>.</p> <p><strong>Note:</strong></p> <ul> <l...
Hard
14.4K
37.1K
14,440
37,109
38.9%
['arithmetic-slices-ii-subsequence', 'count-different-palindromic-subsequences', 'unique-length-3-palindromic-subsequences']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int countPalindromes(string s) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int countPalindromes(String s) {\n \n }\n}"}, {"value": "python", "text": "Python", "defaultCo...
"103301"
{ "name": "countPalindromes", "params": [ { "name": "s", "type": "string" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['String', 'Dynamic Programming']
2,485
Find the Pivot Integer
find-the-pivot-integer
<p>Given a positive integer <code>n</code>, find the <strong>pivot integer</strong> <code>x</code> such that:</p> <ul> <li>The sum of all elements between <code>1</code> and <code>x</code> inclusively equals the sum of all elements between <code>x</code> and <code>n</code> inclusively.</li> </ul> <p>Return <em>the p...
Easy
252.6K
301.8K
252,593
301,755
83.7%
['bulb-switcher']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int pivotInteger(int n) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int pivotInteger(int n) {\n \n }\n}"}, {"value": "python", "text": "Python", "defaultCode": "class So...
8
{ "name": "pivotInteger", "params": [ { "name": "n", "type": "integer" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Math', 'Prefix Sum']
2,486
Append Characters to String to Make Subsequence
append-characters-to-string-to-make-subsequence
<p>You are given two strings <code>s</code> and <code>t</code> consisting of only lowercase English letters.</p> <p>Return <em>the minimum number of characters that need to be appended to the end of </em><code>s</code><em> so that </em><code>t</code><em> becomes a <strong>subsequence</strong> of </em><code>s</code>.</...
Medium
200.3K
274.5K
200,304
274,526
73.0%
['is-subsequence', 'minimum-operations-to-make-a-subsequence']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int appendCharacters(string s, string t) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int appendCharacters(String s, String t) {\n \n }\n}"}, {"value": "python", "text": ...
"coaching" "coding"
{ "name": "appendCharacters", "params": [ { "name": "s", "type": "string" }, { "type": "string", "name": "t" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Two Pointers', 'String', 'Greedy']
2,487
Remove Nodes From Linked List
remove-nodes-from-linked-list
<p>You are given the <code>head</code> of a linked list.</p> <p>Remove every node which has a node with a greater value anywhere to the right side of it.</p> <p>Return <em>the </em><code>head</code><em> of the modified linked list.</em></p> <p>&nbsp;</p> <p><strong class="example">Example 1:</strong></p> <img alt=""...
Medium
223.3K
300.8K
223,330
300,792
74.2%
['reverse-linked-list', 'delete-node-in-a-linked-list', 'next-greater-element-i', 'delete-nodes-from-linked-list-present-in-array']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "/**\n * Definition for singly-linked list.\n * struct ListNode {\n * int val;\n * ListNode *next;\n * ListNode() : val(0), next(nullptr) {}\n * ListNode(int x) : val(x), next(nullptr) {}\n * ListNode(int x, ListNode *next) : val(x), next(next) {}\n * ...
[5,2,13,3,8]
{ "name": "removeNodes", "params": [ { "name": "head", "type": "ListNode" } ], "return": { "type": "ListNode" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Linked List', 'Stack', 'Recursion', 'Monotonic Stack']
2,489
Number of Substrings With Fixed Ratio
number-of-substrings-with-fixed-ratio
null
Medium
1.4K
2.5K
1,364
2,459
55.5%
['count-binary-substrings']
[]
Algorithms
null
"0110011" 1 2
{ "name": "fixedRatio", "params": [ { "name": "s", "type": "string" }, { "type": "integer", "name": "num1" }, { "type": "integer", "name": "num2" } ], "return": { "type": "long" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Hash Table', 'Math', 'String', 'Prefix Sum']
2,490
Circular Sentence
circular-sentence
<p>A <strong>sentence</strong> is a list of words that are separated by a<strong> single</strong> space with no leading or trailing spaces.</p> <ul> <li>For example, <code>&quot;Hello World&quot;</code>, <code>&quot;HELLO&quot;</code>, <code>&quot;hello world hello world&quot;</code> are all sentences.</li> </ul> <p...
Easy
178.9K
253.9K
178,936
253,884
70.5%
['defuse-the-bomb']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n bool isCircularSentence(string sentence) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public boolean isCircularSentence(String sentence) {\n \n }\n}"}, {"value": "python", "text...
"leetcode exercises sound delightful"
{ "name": "isCircularSentence", "params": [ { "name": "sentence", "type": "string" } ], "return": { "type": "boolean" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['String']
2,491
Divide Players Into Teams of Equal Skill
divide-players-into-teams-of-equal-skill
<p>You are given a positive integer array <code>skill</code> of <strong>even</strong> length <code>n</code> where <code>skill[i]</code> denotes the skill of the <code>i<sup>th</sup></code> player. Divide the players into <code>n / 2</code> teams of size <code>2</code> such that the total skill of each team is <strong>e...
Medium
187.2K
271.5K
187,175
271,462
69.0%
['minimum-moves-to-equal-array-elements', 'max-number-of-k-sum-pairs']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n long long dividePlayers(vector<int>& skill) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public long dividePlayers(int[] skill) {\n \n }\n}"}, {"value": "python", "text": "Pytho...
[3,2,5,1,3,4]
{ "name": "dividePlayers", "params": [ { "name": "skill", "type": "integer[]" } ], "return": { "type": "long" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Hash Table', 'Two Pointers', 'Sorting']
2,492
Minimum Score of a Path Between Two Cities
minimum-score-of-a-path-between-two-cities
<p>You are given a positive integer <code>n</code> representing <code>n</code> cities numbered from <code>1</code> to <code>n</code>. You are also given a <strong>2D</strong> array <code>roads</code> where <code>roads[i] = [a<sub>i</sub>, b<sub>i</sub>, distance<sub>i</sub>]</code> indicates that there is a <strong>bid...
Medium
95.6K
165.7K
95,565
165,706
57.7%
['checking-existence-of-edge-length-limited-paths', 'checking-existence-of-edge-length-limited-paths-ii']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int minScore(int n, vector<vector<int>>& roads) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int minScore(int n, int[][] roads) {\n \n }\n}"}, {"value": "python", "text":...
4 [[1,2,9],[2,3,6],[2,4,5],[1,4,7]]
{ "name": "minScore", "params": [ { "name": "n", "type": "integer" }, { "type": "integer[][]", "name": "roads" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Depth-First Search', 'Breadth-First Search', 'Union Find', 'Graph']
2,493
Divide Nodes Into the Maximum Number of Groups
divide-nodes-into-the-maximum-number-of-groups
<p>You are given a positive integer <code>n</code> representing the number of nodes in an <strong>undirected</strong> graph. The nodes are labeled from <code>1</code> to <code>n</code>.</p> <p>You are also given a 2D integer array <code>edges</code>, where <code>edges[i] = [a<sub>i, </sub>b<sub>i</sub>]</code> indicat...
Hard
81.4K
120.6K
81,430
120,629
67.5%
['binary-tree-level-order-traversal', 'is-graph-bipartite', 'shortest-cycle-in-a-graph']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int magnificentSets(int n, vector<vector<int>>& edges) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int magnificentSets(int n, int[][] edges) {\n \n }\n}"}, {"value": "py...
6 [[1,2],[1,4],[1,5],[2,6],[2,3],[4,6]]
{ "name": "magnificentSets", "params": [ { "type": "integer", "name": "n" }, { "type": "integer[][]", "name": "edges" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Depth-First Search', 'Breadth-First Search', 'Union Find', 'Graph']
2,494
Merge Overlapping Events in the Same Hall
merge-overlapping-events-in-the-same-hall
null
Hard
2.4K
7K
2,431
7,047
34.5%
[]
['Create table If Not Exists HallEvents (hall_id int, start_day date, end_day date)', 'Truncate table HallEvents', "insert into HallEvents (hall_id, start_day, end_day) values ('1', '2023-01-13', '2023-01-14')", "insert into HallEvents (hall_id, start_day, end_day) values ('1', '2023-01-14', '2023-01-17')", "insert int...
Database
null
{"headers": {"HallEvents": ["hall_id", "start_day", "end_day"]}, "rows": {"HallEvents": [[1, "2023-01-13", "2023-01-14"], [1, "2023-01-14", "2023-01-17"], [1, "2023-01-18", "2023-01-25"], [2, "2022-12-09", "2022-12-23"], [2, "2022-12-13", "2022-12-17"], [3, "2022-12-01", "2023-01-30"]]}}
{"mysql": ["Create table If Not Exists HallEvents (hall_id int, start_day date, end_day date)"], "mssql": ["Create table HallEvents (hall_id int, start_day date, end_day date)"], "oraclesql": ["Create table HallEvents (hall_id int, start_day date, end_day date)", "ALTER SESSION SET nls_date_format='YYYY-MM-DD'"], "data...
{"mysql": ["MySQL", "<p><code>MySQL 8.0</code>.</p>"], "mssql": ["MS SQL Server", "<p><code>mssql server 2019</code>.</p>"], "oraclesql": ["Oracle", "<p><code>Oracle Sql 11.2</code>.</p>"], "pythondata": ["Pandas", "<p>Python 3.10 with Pandas 2.2.2 and NumPy 1.26.4</p>"]}
['Database']
2,495
Number of Subarrays Having Even Product
number-of-subarrays-having-even-product
null
Medium
2.2K
3.7K
2,228
3,651
61.0%
[]
[]
Algorithms
null
[9,6,7,13]
{ "name": "evenProduct", "params": [ { "name": "nums", "type": "integer[]" } ], "return": { "type": "long" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Math', 'Dynamic Programming']
2,496
Maximum Value of a String in an Array
maximum-value-of-a-string-in-an-array
<p>The <strong>value</strong> of an alphanumeric string can be defined as:</p> <ul> <li>The <strong>numeric</strong> representation of the string in base <code>10</code>, if it comprises of digits <strong>only</strong>.</li> <li>The <strong>length</strong> of the string, otherwise.</li> </ul> <p>Given an array <cod...
Easy
55.2K
75.4K
55,236
75,403
73.3%
['maximum-subarray']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int maximumValue(vector<string>& strs) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int maximumValue(String[] strs) {\n \n }\n}"}, {"value": "python", "text": "Python", "...
["alic3","bob","3","4","00000"]
{ "name": "maximumValue", "params": [ { "name": "strs", "type": "string[]" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'String']
2,497
Maximum Star Sum of a Graph
maximum-star-sum-of-a-graph
<p>There is an undirected graph consisting of <code>n</code> nodes numbered from <code>0</code> to <code>n - 1</code>. You are given a <strong>0-indexed</strong> integer array <code>vals</code> of length <code>n</code> where <code>vals[i]</code> denotes the value of the <code>i<sup>th</sup></code> node.</p> <p>You are...
Medium
25.4K
62.7K
25,437
62,666
40.6%
['number-of-ways-to-reconstruct-a-tree', 'find-center-of-star-graph']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int maxStarSum(vector<int>& vals, vector<vector<int>>& edges, int k) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int maxStarSum(int[] vals, int[][] edges, int k) {\n \n ...
[1,2,3,4,10,-10,-20] [[0,1],[1,2],[1,3],[3,4],[3,5],[3,6]] 2
{ "name": "maxStarSum", "params": [ { "name": "vals", "type": "integer[]" }, { "type": "integer[][]", "name": "edges" }, { "type": "integer", "name": "k" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Greedy', 'Graph', 'Sorting', 'Heap (Priority Queue)']
2,498
Frog Jump II
frog-jump-ii
<p>You are given a <strong>0-indexed</strong> integer array <code>stones</code> sorted in <strong>strictly increasing order</strong> representing the positions of stones in a river.</p> <p>A frog, initially on the first stone, wants to travel to the last stone and then return to the first stone. However, it can jump t...
Medium
27.2K
43.8K
27,215
43,848
62.1%
['climbing-stairs', 'koko-eating-bananas']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int maxJump(vector<int>& stones) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int maxJump(int[] stones) {\n \n }\n}"}, {"value": "python", "text": "Python", "defaultCode"...
[0,2,5,6,7]
{ "name": "maxJump", "params": [ { "name": "stones", "type": "integer[]" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Binary Search', 'Greedy']
2,499
Minimum Total Cost to Make Arrays Unequal
minimum-total-cost-to-make-arrays-unequal
<p>You are given two <strong>0-indexed</strong> integer arrays <code>nums1</code> and <code>nums2</code>, of equal length <code>n</code>.</p> <p>In one operation, you can swap the values of any two indices of <code>nums1</code>. The <strong>cost</strong> of this operation is the <strong>sum</strong> of the indices.</p...
Hard
5.3K
13.1K
5,290
13,056
40.5%
[]
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n long long minimumTotalCost(vector<int>& nums1, vector<int>& nums2) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public long minimumTotalCost(int[] nums1, int[] nums2) {\n \n }\n...
[1,2,3,4,5] [1,2,3,4,5]
{ "name": "minimumTotalCost", "params": [ { "name": "nums1", "type": "integer[]" }, { "type": "integer[]", "name": "nums2" } ], "return": { "type": "long" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Hash Table', 'Greedy', 'Counting']
2,500
Delete Greatest Value in Each Row
delete-greatest-value-in-each-row
<p>You are given an <code>m x n</code> matrix <code>grid</code> consisting of positive integers.</p> <p>Perform the following operation until <code>grid</code> becomes empty:</p> <ul> <li>Delete the element with the greatest value from each row. If multiple such elements exist, delete any of them.</li> <li>Add the ...
Easy
76.9K
97.6K
76,899
97,595
78.8%
['equal-row-and-column-pairs']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int deleteGreatestValue(vector<vector<int>>& grid) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int deleteGreatestValue(int[][] grid) {\n \n }\n}"}, {"value": "python", "...
[[1,2,4],[3,3,1]]
{ "name": "deleteGreatestValue", "params": [ { "name": "grid", "type": "integer[][]" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Sorting', 'Heap (Priority Queue)', 'Matrix', 'Simulation']
2,501
Longest Square Streak in an Array
longest-square-streak-in-an-array
<p>You are given an integer array <code>nums</code>. A subsequence of <code>nums</code> is called a <strong>square streak</strong> if:</p> <ul> <li>The length of the subsequence is at least <code>2</code>, and</li> <li><strong>after</strong> sorting the subsequence, each element (except the first element) is the <st...
Medium
151.3K
285.1K
151,265
285,109
53.1%
[]
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int longestSquareStreak(vector<int>& nums) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int longestSquareStreak(int[] nums) {\n \n }\n}"}, {"value": "python", "text": "Py...
[4,3,6,16,8,2]
{ "name": "longestSquareStreak", "params": [ { "name": "nums", "type": "integer[]" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Hash Table', 'Binary Search', 'Dynamic Programming', 'Sorting']
2,502
Design Memory Allocator
design-memory-allocator
<p>You are given an integer <code>n</code> representing the size of a <strong>0-indexed</strong> memory array. All memory units are initially free.</p> <p>You have a memory allocator with the following functionalities:</p> <ol> <li><strong>Allocate </strong>a block of <code>size</code> consecutive free memory units ...
Medium
24.4K
46K
24,379
45,975
53.0%
[]
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Allocator {\npublic:\n Allocator(int n) {\n \n }\n \n int allocate(int size, int mID) {\n \n }\n \n int freeMemory(int mID) {\n \n }\n};\n\n/**\n * Your Allocator object will be instantiated and called as such:\n * Alloc...
["Allocator","allocate","allocate","allocate","freeMemory","allocate","allocate","allocate","freeMemory","allocate","freeMemory"] [[10],[1,1],[1,2],[1,3],[2],[3,4],[1,1],[1,1],[1],[10,2],[7]]
{ "classname": "Allocator", "constructor": { "params": [ { "type": "integer", "name": "n" } ] }, "methods": [ { "params": [ { "type": "integer", "name": "size" }, { "type": "integer", "name": "mID" ...
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Hash Table', 'Design', 'Simulation']
2,503
Maximum Number of Points From Grid Queries
maximum-number-of-points-from-grid-queries
<p>You are given an <code>m x n</code> integer matrix <code>grid</code> and an array <code>queries</code> of size <code>k</code>.</p> <p>Find an array <code>answer</code> of size <code>k</code> such that for each integer <code>queries[i]</code> you start in the <strong>top left</strong> cell of the matrix and repeat t...
Hard
91.7K
153.8K
91,696
153,804
59.6%
['trapping-rain-water-ii', 'escape-the-spreading-fire']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n vector<int> maxPoints(vector<vector<int>>& grid, vector<int>& queries) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int[] maxPoints(int[][] grid, int[] queries) {\n \n }\...
[[1,2,3],[2,5,7],[3,5,1]] [5,6,2]
{ "name": "maxPoints", "params": [ { "name": "grid", "type": "integer[][]" }, { "type": "integer[]", "name": "queries" } ], "return": { "type": "integer[]" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Two Pointers', 'Breadth-First Search', 'Union Find', 'Sorting', 'Heap (Priority Queue)', 'Matrix']
2,504
Concatenate the Name and the Profession
concatenate-the-name-and-the-profession
null
Easy
5.7K
7.3K
5,717
7,272
78.6%
[]
["Create table If Not Exists Person (person_id int, name varchar(30), profession ENUM('Doctor','Singer','Actor','Player','Engineer','Lawyer'))", 'Truncate table Person', "insert into Person (person_id, name, profession) values ('1', 'Alex', 'Singer')", "insert into Person (person_id, name, profession) values ('3', 'Ali...
Database
null
{"headers": {"Person": ["person_id", "name", "profession"]}, "rows": {"Person": [[1, "Alex", "Singer"], [3, "Alice", "Actor"], [2, "Bob", "Player"], [4, "Messi", "Doctor"], [6, "Tyson", "Engineer"], [5, "Meir", "Lawyer"]]}}
{"mysql": ["Create table If Not Exists Person (person_id int, name varchar(30), profession ENUM('Doctor','Singer','Actor','Player','Engineer','Lawyer'))"], "mssql": ["Create table Person (person_id int, name varchar(30), profession varchar(8) not null check(profession in ('Doctor','Singer','Actor','Player','Engineer','...
{"mysql": ["MySQL", "<p><code>MySQL 8.0</code>.</p>"], "mssql": ["MS SQL Server", "<p><code>mssql server 2019</code>.</p>"], "oraclesql": ["Oracle", "<p><code>Oracle Sql 11.2</code>.</p>"], "pythondata": ["Pandas", "<p>Python 3.10 with Pandas 2.2.2 and NumPy 1.26.4</p>"], "postgresql": ["PostgreSQL", "<p>PostgreSQL 16<...
['Database']
2,505
Bitwise OR of All Subsequence Sums
bitwise-or-of-all-subsequence-sums
null
Medium
4.1K
6.3K
4,116
6,338
64.9%
['bitwise-ors-of-subarrays']
[]
Algorithms
null
[2,1,0,3]
{ "name": "subsequenceSumOr", "params": [ { "name": "nums", "type": "integer[]" } ], "return": { "type": "long" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Math', 'Bit Manipulation', 'Brainteaser']
2,506
Count Pairs Of Similar Strings
count-pairs-of-similar-strings
<p>You are given a <strong>0-indexed</strong> string array <code>words</code>.</p> <p>Two strings are <strong>similar</strong> if they consist of the same characters.</p> <ul> <li>For example, <code>&quot;abca&quot;</code> and <code>&quot;cba&quot;</code> are similar since both consist of characters <code>&#39;a&#39...
Easy
60.3K
83.6K
60,331
83,579
72.2%
['sort-characters-by-frequency', 'count-the-number-of-consistent-strings', 'number-of-good-paths']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int similarPairs(vector<string>& words) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int similarPairs(String[] words) {\n \n }\n}"}, {"value": "python", "text": "Python",...
["aba","aabb","abcd","bac","aabc"]
{ "name": "similarPairs", "params": [ { "name": "words", "type": "string[]" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Array', 'Hash Table', 'String', 'Bit Manipulation', 'Counting']
2,507
Smallest Value After Replacing With Sum of Prime Factors
smallest-value-after-replacing-with-sum-of-prime-factors
<p>You are given a positive integer <code>n</code>.</p> <p>Continuously replace <code>n</code> with the sum of its <strong>prime factors</strong>.</p> <ul> <li>Note that if a prime factor divides <code>n</code> multiple times, it should be included in the sum as many times as it divides <code>n</code>.</li> </ul> <...
Medium
27.1K
55.3K
27,074
55,293
49.0%
['happy-number', '2-keys-keyboard', 'count-ways-to-make-array-with-product', 'distinct-prime-factors-of-product-of-array', 'minimum-division-operations-to-make-array-non-decreasing']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n int smallestValue(int n) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public int smallestValue(int n) {\n \n }\n}"}, {"value": "python", "text": "Python", "defaultCode": "class ...
15
{ "name": "smallestValue", "params": [ { "name": "n", "type": "integer" } ], "return": { "type": "integer" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Math', 'Simulation', 'Number Theory']
2,508
Add Edges to Make Degrees of All Nodes Even
add-edges-to-make-degrees-of-all-nodes-even
<p>There is an <strong>undirected</strong> graph consisting of <code>n</code> nodes numbered from <code>1</code> to <code>n</code>. You are given the integer <code>n</code> and a <strong>2D</strong> array <code>edges</code> where <code>edges[i] = [a<sub>i</sub>, b<sub>i</sub>]</code> indicates that there is an edge bet...
Hard
16.6K
49.7K
16,552
49,722
33.3%
['minimum-degree-of-a-connected-trio-in-a-graph']
[]
Algorithms
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n bool isPossible(int n, vector<vector<int>>& edges) {\n \n }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n public boolean isPossible(int n, List<List<Integer>> edges) {\n \n }\n}"}, {"valu...
5 [[1,2],[2,3],[3,4],[4,2],[1,4],[2,5]]
{ "name": "isPossible", "params": [ { "type": "integer", "name": "n" }, { "type": "list<list<integer>>", "name": "edges" } ], "return": { "type": "boolean" } }
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressS...
['Hash Table', 'Graph']