prefix stringlengths 0 918k | middle stringlengths 0 812k | suffix stringlengths 0 962k |
|---|---|---|
def how_many_times(string: str, substring: str) -> int:
""" Find how many times a given substring can be found in the original string. Count overlaping cases.
>>> how_many_times('', 'a')
0
>>> how_many_times('aaa', 'a')
3
>>> how_many_times('aaaa', 'aa')
3
"""
| return sum(1 for i in range(len(string)) if string.startswith(substring, i)) |
print(how_many_times('aaaa', 'aa')) |
//The FibFib number sequence is a sequence similar to the Fibbonacci sequnece that's defined as follows:
// fibfib(0) == 0
// fibfib(1) == 0
// fibfib(2) == 1
// fibfib(n) == fibfib(n-1) + fibfib(n-2) + fibfib(n-3).
// Please write a function to efficiently compute the n-th element of the fibfib number sequence.
// >>>... | } | |
def car_race_collision(n: int) -> int:
"""
Imagine a road that's a perfectly straight infinitely long line.
n cars are driving left to right; simultaneously, a different set of n cars
are driving right to left. The two sets of cars start out being very far from
each other. All cars move in the s... | right_cars = [i for i in range(l)] | for i in range(l):
for j in range(l):
if left_cars[i] == right_cars[j]:
count += 1
return count |
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// The FibFib number sequence is a sequence similar to the Fibbonacci sequnece that's defined as follows:
// fibfib(0) == 0
// fib... | } | if (n == 2) {
return 1;
}
long[] memo = new long[(int) n + 1];
memo[0] = 0;
memo[1] = 0;
memo[2] = 1;
for (int i = 3; i <= n; i++) {
memo[i] = memo[i - 1] + memo[i - 2] + memo[i - 3];
}
return memo[(int) n];
}
} |
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// Given a string, find out how many distinct characters (regardless of case) does it consist of
// >>> countDistinctCharacters(("xyzX... | long result = 0; | string = string.toLowerCase();
Set<Character> set = new HashSet<Character>();
for (int i = 0; i < string.length(); i++) {
char c = string.charAt(i);
set.add(c);
}
result = set.size();
return result;
}
} |
//In this problem, you will implement a function that takes two arrays of numbers,
// and determines whether it is possible to perform an exchange of elements
// between them to make lst1 an array of only even numbers.
// There is no limit on the number of exchanged elements between lst1 and lst2.
// If it is possible ... | if(exchange){ | return "YES";
}else{
return "NO";
}
}
|
//In this problem, you will implement a function that takes two arrays of numbers,
// and determines whether it is possible to perform an exchange of elements
// between them to make lst1 an array of only even numbers.
// There is no limit on the number of exchanged elements between lst1 and lst2.
// If it is possible ... | if(num2 < lst2.length){ | while(num2 < lst2.length && exchange == false){
if(lst2[num2] % 2 == 0){
lst1[num1] = lst2[num2];
exchange = true;
}
num2++;
}
}
}
num1++;
}
if(... |
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// Given a positive integer n, you have to make a pile of n levels of stones.
// The first level has n stones.
// The number of st... | } | return levels;
}
} |
from typing import List, Tuple
def find_closest_elements(numbers: List[float]) -> Tuple[float, float]:
""" From a supplied list of numbers (of length at least two) select and return two that are the closest to each
other and return them in order (smaller number, larger number).
>>> find_closest_elements([1... | for j in range(i+1, len(numbers)): | if abs(numbers[i] - numbers[j]) < temp:
temp = abs(numbers[i] - numbers[j])
temp_index = i
temp2_index = j
elif abs(numbers[i] - numbers[j]) == temp:
if numbers[i] > numbers[j]:
temp = abs(numbers[i] - numbers[j]... |
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// Input are two strings a and b consisting only of 1s and 0s.
// Perform binary XOR on these inputs and return result also as a strin... | } | |
//Return the number of times the digit 7 appears in integers less than n which are divisible by 11 or 13.
// >>> fizz_buzz(50)
// 0
// >>> fizz_buzz(78)
// 2
// >>> fizz_buzz(79)
// 3
function fizz_buzz(n){
let result = 0;
for(let i = 0; i < n; i++){
if(i % 11 === 0 || i % 13 === 0){
let arr... | } | }
}
}
return result;
}
|
//Given an array of integers nums, find the minimum sum of any non-empty sub-array
// of nums.
// Example
// >>> minSubArraySum([2, 3, 4, 1, 2, 4])
// 1
// >>> minSubArraySum([-1, -2, -3])
// -6
function minSubArraySum(nums){
let sum = 0;
let minSum = nums[0];
for(let i = 0; i < nums.length; i++){
s... | if(sum > 0){ | sum = 0;
}
}
return minSum;
}
|
//You will be given the name of a class (a string) and an array of extensions.
// The extensions are to be used to load additional classes to the class. The
// strength of the extension is as follows: Let CAP be the number of the uppercase
// letters in the extension's name, and let SM be the number of lowercase letter... | if (strength < min_strength) { | min_strength = strength;
output = class_name + "." + extensions[i];
}
}
return output;
}
|
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// Input to this function is a string representing musical notes in a special ASCII format.
// Your task is to parse this string and r... | } | } |
def is_bored(S: str) -> int:
"""
You'll be given a string of words, and your task is to count the number
of boredoms. A boredom is a sentence that starts with the word "I".
Sentences are delimited by '.', '?' or '!'.
For example:
>>> is_bored('Hello world')
0
>>> is_bored('The sky is... | words = sentence.split() | if words and words[0] == 'I':
boredoms += 1
return boredoms
|
//Given an array of strings, where each string consists of only digits, return an array.
// Each element i of the output should be "the number of odd elements in the
// string i of the input." where all the i's should be replaced by the number
// of odd digits in the i'th string of the input.
// >>> odd_count(["1234567... | for (var j = 0; j < word.length; j++){ | if (word[j] % 2 == 1){
odd_sum += 1;
}
}
var odd_word = "the number of odd elements " + odd_sum + "n the str" + odd_sum + "ng " + odd_sum + " of the " + odd_sum + "nput.";
new_lst.push(odd_word);
}
return new_lst;
} |
//You are given a string s.
// if s[i] is a letter, reverse its case from lower to upper or vise versa,
// otherwise keep it as it is.
// If the string contains no letters, reverse the string.
// The function should return the resulted string.
// Examples
// >>> solve("1234")
// "4321"
// >>> solve("ab")
// "AB"
// >>... | return char; | });
return swapped.join('');
}
return s.split('').reverse().join('');
}
|
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// You are given a positive integer n. You have to create an integer array array list a of length n.
// For each i (1 ≤ i ≤ n), the va... | } | }
}
return count;
}
} |
//Write a function that returns true if the object q will fly, and false otherwise.
// The object q will fly if it's balanced (it is a palindromic array) and the sum of its elements is less than or equal the maximum possible weight w.
// Example:
// >>> will_it_fly([1, 2], 5)
// false
// # 1+2 is less than the maximum ... | let balanced = true; | for(let i = 0; i < q.length; i++){
sum += q[i];
}
for(let i = 0; i < q.length; i++){
if(q[i] !== q[q.length - 1 - i]){
balanced = false;
break;
}
}
return balanced && sum <= w;
} |
//prime_fib returns n-th number that is a Fibonacci number and it's also prime.
// >>> prime_fib(1)
// 2
// >>> prime_fib(2)
// 3
// >>> prime_fib(3)
// 5
// >>> prime_fib(4)
// 13
// >>> prime_fib(5)
// 89
function prime_fib(n){
function isPrime(number){
if(number <= 3){
return number > 1;
... | return false; | }
}
return true;
}
}
function fib(num){
var a = 1, b = 0, temp;
while (num >= 0){
temp = a;
a = a + b;
b = temp;
num--;
}
return b;
}
var res = 0;
var fibNum = 0;... |
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// You have to write a function which validates a given date string and
// returns true if the date is valid otherwise false.
// T... | } | return valid_date;
}
} |
//Given a non-empty array of integers, return the sum of all of the odd elements that are in even positions.
// Examples
// >>> solution([5, 8, 7, 1])
// 12
// >>> solution([3, 3, 3, 3, 3])
// 9
// >>> solution([30, 13, 24, 321])
// 0
function solution(lst){
let result = 0;
for (let i = 0; i < lst.length; i++){
... | } | }
return result;
} |
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// Write a function that returns true if the object q will fly, and false otherwise.
// The object q will fly if it's balanced (it is ... | return true; | }
} |
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// Given a positive integer, obtain its roman numeral equivalent as a string,
// and return it in lowercase.
// Restrictions: 1 <=... | num -= 5; | }
if (num >= 4) {
res += "iv";
num -= 4;
}
while (num >= 1) {
res += "i";
num -= 1;
}
return res;
}
} |
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// You have to write a function which validates a given date string and
// returns true if the date is valid otherwise false.
// T... | valid_date = false; | }
return valid_date;
}
} |
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// Given a positive integer n, you have to make a pile of n levels of stones.
// The first level has n stones.
// The number of st... | return levels; | }
} |
//Check if two words have the same characters.
// >>> same_chars("eabcdzzzz", "dddzzzzzzzddeddabc")
// true
// >>> same_chars("abcd", "dddddddabc")
// true
// >>> same_chars("dddddddabc", "abcd")
// true
// >>> same_chars("eabcd", "dddddddabc")
// false
// >>> same_chars("abcd", "dddddddabce")
// false
// >>> same_char... | } | return res;
}
|
def car_race_collision(n: int) -> int:
"""
Imagine a road that's a perfectly straight infinitely long line.
n cars are driving left to right; simultaneously, a different set of n cars
are driving right to left. The two sets of cars start out being very far from
each other. All cars move in the s... | l = n * n | count = 0
left_cars = [i for i in range(l)]
right_cars = [i for i in range(l)]
for i in range(l):
for j in range(l):
if left_cars[i] == right_cars[j]:
count += 1
return count |
//Given an integer. return an array that has the number of even and odd digits respectively.
// Example:
// >>> even_odd_count(-12)
// [1, 1]
// >>> even_odd_count(123)
// [1, 2]
function even_odd_count(num){
num = Math.abs(num);
var evens = 0;
var odds = 0;
for(var i = 0; i < num.toString().length; i++){
if(num.... | evens ++; | }
else{
odds ++;
}
}
return [evens, odds];
}
|
//You are given a word. Your task is to find the closest vowel that stands between
// two consonants from the right side of the word (case sensitive).
// Vowels in the beginning and ending doesn't count. Return empty string if you didn't
// find any vowel met the above condition.
// You may assume that the given stri... | return "" | } else {
return result[0];
}
}
} |
//Circular shift the digits of the integer x, shift the digits right by shift
// and return the result as a string.
// If shift > number of digits, return digits reversed.
// >>> circular_shift(12, 1)
// "21"
// >>> circular_shift(12, 2)
// "12"
function circular_shift(x, shift){
var str = x.toString();
var len = str... | var res = ''; | if(len < shift){
for(var i = len-1; i >= 0; i--){
res += str[i];
}
}else{
res = str.substring(len-shift) + str.substring(0, len-shift);
}
return res;
}
|
//Your task is to write a function that returns true if a number x is a simple
// power of n and false in other cases.
// x is a simple power of n if n**int=x
// For example:
// >>> is_simple_power(1, 4)
// true
// >>> is_simple_power(2, 2)
// true
// >>> is_simple_power(8, 2)
// true
// >>> is_simple_power(3, 2)
// fa... | if(x===1){ | return true;
}
if(x < n){
return false;
}
if(x % n !== 0){
return false;
}
return is_simple_power(x/n, n);
}
|
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// Input to this function is a string represented multiple groups for nested parentheses separated by spaces.
// For each of the group... | result.add(max_depth); | }
return result;
}
} |
def is_simple_power(x: int, n: int) -> bool:
"""Your task is to write a function that returns true if a number x is a simple
power of n and false in other cases.
x is a simple power of n if n**int=x
For example:
>>> is_simple_power(1, 4)
true
>>> is_simple_power(2, 2)
true
>>> is_sim... | if x == 0: | return False
else:
while x > 1:
if x % n != 0:
return False
x /= n
return True
|
//Given a positive integer, obtain its roman numeral equivalent as a string,
// and return it in lowercase.
// Restrictions: 1 <= num <= 1000
// Examples:
// >>> int_to_mini_roman(19)
// "xix"
// >>> int_to_mini_roman(152)
// "clii"
// >>> int_to_mini_roman(426)
// "cdxxvi"
function int_to_mini_roman(number){
var r... | 4: "iv", | 1: "i"
};
var output = "";
while (number > 0){
var key_list = Object.keys(roman_conversion).map(Number);
key_list.sort(function(a, b){return b-a});
for (var i = 0; i < key_list.length; i++){
if (key_list[i] <= number){
output += roman_conversion[ke... |
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// The FibFib number sequence is a sequence similar to the Fibbonacci sequnece that's defined as follows:
// fibfib(0) == 0
// fib... | } | if (n == 1) {
return 0;
}
if (n == 2) {
return 1;
}
long[] memo = new long[(int) n + 1];
memo[0] = 0;
memo[1] = 0;
memo[2] = 1;
for (int i = 3; i <= n; i++) {
memo[i] = memo[i - 1] + memo[i - 2] + memo[i - 3];
... |
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// Return sorted unique elements in an array array list
// >>> unique((new ArrayList<Long>(Arrays.asList((long)5l, (long)3l, (long)5l,... | TreeSet<Long> tree = new TreeSet<Long>(l); | return new ArrayList<Long>(tree);
}
} |
from typing import List
def sort_even(l: List[int]) -> List[int]:
"""This function takes a list l and returns a list l' such that
l' is identical to l in the odd indicies, while its values at the even indicies are equal
to the values of the even indicies of l, but sorted.
>>> sort_even([1, 2, 3])
[... | temp: List[int] = [] | for i in range(0, len(l), 2):
temp.append(l[i])
temp.sort()
for i in range(0, len(l), 2):
l[i] = temp[i // 2]
return l |
//Input to this function is a string representing musical notes in a special ASCII format.
// Your task is to parse this string and return array of integers corresponding to how many beats does each
// not last.
// Here is a legend:
// 'o' - whole note, lasts four beats
// 'o|' - half note, lasts two beats
// '.|' - qu... | return song; | }
|
//triples_sum_to_zero takes an array of integers as an input.
// it returns true if there are three distinct elements in the array that
// sum to zero, and false otherwise.
// >>> triples_sum_to_zero([1, 3, 5, 0])
// false
// >>> triples_sum_to_zero([1, 3, -2, 1])
// true
// >>> triples_sum_to_zero([1, 2, 3, 7])
// fal... | } | }
}
}
}
return false;
}
|
from typing import List
def do_algebra(operator: List[str], operand: List[int]) -> int:
"""
Given two lists operator, and operand. The first list has basic algebra operations, and
the second list is a list of integers. Use the two given lists to build the algebric
expression and return the evaluation... | raise ValueError("Invalid number of operators") | expr = [str(operand[0])]
for idx, op in enumerate(operator):
expr.append(op)
expr.append(str(operand[idx + 1]))
return eval("".join(expr)) |
//You are given a non-empty array of positive integers. Return the greatest integer that is greater than
// zero, and has a frequency greater than or equal to the value of the integer itself.
// The frequency of an integer is the number of times it appears in the array.
// If no such a value exist, return -1.
// Exam... | } | |
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// You are given a rectangular grid of wells. Each row represents a single well,
// and each 1 in a row represents a single unit of wa... | } | count += units;
}
return count;
}
} |
//You are given an array of two strings, both strings consist of open
// parentheses '(' or close parentheses ')' only.
// Your job is to check if it is possible to concatenate the two strings in
// some order, that the resulting string will be good.
// A string S is considered to be good if and only if all parentheses... | } | if (is_good(str2 + str1)){
return 'Yes';
}
return 'No';
} |
//You are given a rectangular grid of wells. Each row represents a single well,
// and each 1 in a row represents a single unit of water.
// Each well has a corresponding bucket that can be used to extract water from it,
// and all buckets have the same capacity.
// Your task is to use the buckets to empty the wells.
... | var c = 1; | var r = grid.length;
var c = grid[0].length;
for(var i = 0; i < r; i++){
sum = 0;
for(var j = 0; j < c; j++){
sum += grid[i][j];
}
maxFill += Math.ceil(sum/capacity);
}
return maxFill;
}
|
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// In this task, you will be given a string that represents a number of apples and oranges
// that are distributed in a basket of fru... | } | } |
//Return array of prime factors of given integer in the order from smallest to largest.
// Each of the factors should be arrayed number of times corresponding to how many times it appeares in factorization.
// Input number should be equal to the product of all factors
// >>> factorize(8)
// [2, 2, 2]
// >>> factorize(2... | let arr = []; | while (n > 1) {
if (n % factor == 0) {
arr.push(factor);
n = n / factor;
} else {
factor++;
}
}
return arr;
}
|
//Write a function that takes an array of numbers as input and returns
// the number of elements in the array that are greater than 10 and both
// first and last digits of a number are odd (1, 3, 5, 7, 9).
// For example:
// >>> specialFilter([15, -73, 14, -15])
// 1
// >>> specialFilter([33, -2, -3, 45, 21, 109])
//... | count++; | }
}
return count;
}
|
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return derivative of this polynomial in... | ans.add(xs.get(i) * i); | }
return ans;
}
} |
def encode(message: str) -> str:
"""
Write a function that takes a message, and encodes in such a
way that it swaps case of all letters, replaces all vowels in
the message with the letter that appears 2 places ahead of that
vowel in the english alphabet.
Assume only letters.
Exampl... | if ch.lower() in 'wxyz': | return ch.lower()
return chr(ord(ch) + 2)
return ch
return ''.join(map(lambda ch: encode_vowel(swap_case(ch)), message))
|
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// You are given an array array list of integers.
// You need to find the largest prime value and return the sum of its digits.
//... | output += largestPrime % 10; | largestPrime /= 10;
}
return output;
}
}
} |
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// Create a function that returns true if the last character
// of a given string is an alphabetical character and is not
// a par... | } | if (txt.substring(len - 2, len - 1).matches(" ")) {
return true;
}
}
return false;
}
} |
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// This function takes an array array list l and returns an array array list l' such that
// l' is identical to l in the indicies that... | } else { | l_r.add(l.get(i));
}
}
for (int i = 0; i < l_e.size(); i++) {
long min = l_e.get(i);
for (int j = i; j < l_e.size(); j++) {
if (l_e.get(j) < min) {
min = l_e.get(j);
l_e.set(j, l_e.get(i));
... |
//pairs_sum_to_zero takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
// >>> pairs_sum_to_zero([1, 3, 5, 0])
// false
// >>> pairs_sum_to_zero([1, 3, -2, 1])
// false
// >>> pairs_sum_to_zero([1, 2, 3, 7])
// false
// >>>... | while (j < l.length){ | if ((l[i] + l[j]) === 0){
return true
}
j = j + 1
}
i = i + 1
}
return false
}
|
//Return a string containing space-delimited numbers starting from 0 upto n inclusive.
// >>> string_sequence(0)
// "0"
// >>> string_sequence(5)
// "0 1 2 3 4 5"
function string_sequence(n){
let arr = [];
for(let i = 0; i <= n; i++){ | arr.push(i); | }
return arr.join(" ");
}
|
//Given two arrays operator, and operand. The first array has basic algebra operations, and
// the second array is an array of integers. Use the two given arrays to build the algebric
// expression and return the evaluation of this expression.
// The basic algebra operations:
// Addition ( + )
// Subtraction ( - )
... | operand.splice(0, 1); | operator.splice(0, 1);
}
return answer;
}
|
//Write a function that accepts two arrays of strings and returns the array that has
// total number of chars in the all strings of the array less than the other array.
// if the two arrays have the same number of chars, return the first array.
// Examples
// >>> total_match([], [])
// []
// >>> total_match(["hi", "ad... | return lst2; | }
else{
return lst1;
}
}
|
def fib4(n: int) -> int:
"""The Fib4 number sequence is a sequence similar to the Fibbonacci sequnece that's defined as follows:
fib4(0) -> 0
fib4(1) -> 0
fib4(2) -> 2
fib4(3) -> 0
fib4(n) -> fib4(n-1) + fib4(n-2) + fib4(n-3) + fib4(n-4).
Please write a function to efficiently compute the n-... | return 0 | elif n == 1:
return 0
elif n == 2:
return 2
elif n == 3:
return 0
else:
return fib4(n-1) + fib4(n-2) + fib4(n-3) + fib4(n-4)
|
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// Return sorted unique common elements for two array lists.
// >>> common((new ArrayList<Long>(Arrays.asList((long)1l, (long)4l, (lon... | .collect(Collectors.toSet()) | );
}
} |
//Given an array of numbers, return whether or not they are sorted
// in ascending order. If array has more than 1 duplicate of the same
// number, return false. Assume no negative numbers and only integers.
// Examples
// >>> is_sorted([5])
// true
// >>> is_sorted([1, 2, 3, 4, 5])
// true
// >>> is_sorted([1, 3, 2, 4... | if (dupe_found){ | return false;
} else {
dupe_found = true;
}
} else {
last = x;
dupe_found = false;
}
}
return true;
}
|
//Out of array of strings, return the longest one. Return the first one in case of multiple
// strings of the same length. Return undefined in case the input array is empty.
// >>> longest([])
// undefined
// >>> longest(["a", "b", "c"])
// "a"
// >>> longest(["a", "bb", "ccc"])
// "ccc"
function longest(strings){
| var result; | if (strings.length === 0) {
return undefined;
}
for (var i = 0; i < strings.length; i++) {
if (!result || strings[i].length > result.length) {
result = strings[i];
}
}
return result;
}
|
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// Given an array array list of numbers, return whether or not they are sorted
// in ascending order. If array list has more than 1 du... | boolean first_time = true; | boolean seen_2_in_a_row = false;
for (Long number : lst) {
if (first_time) {
first_time = false;
previous_number = number.intValue();
running_max = number.intValue();
}
else {
... |
//You are given a 2 dimensional data, as a nested arrays,
// which is similar to matrix, however, unlike matrices,
// each row may contain a different number of columns.
// Given lst, and integer x, find integers x in the array,
// and return array of arrays, [(x1, y1), (x2, y2) ...] such that
// each array is a coordi... | return coordinates.sort(function(a, b){ | return a[0] - b[0] || b[1] - a[1];
});
}
|
//pairs_sum_to_zero takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
// >>> pairs_sum_to_zero([1, 3, 5, 0])
// false
// >>> pairs_sum_to_zero([1, 3, -2, 1])
// false
// >>> pairs_sum_to_zero([1, 2, 3, 7])
// false
// >>>... | return false | }
|
def flip_case(string: str) -> str:
""" For a given string, flip lowercase characters to uppercase and uppercase to lowercase.
>>> flip_case('Hello')
'hELLO'
"""
new_string = ""
for character in string:
if character.isupper():
new_string += character.lower()
else:
... | return new_string | |
//Return a string containing space-delimited numbers starting from 0 upto n inclusive.
// >>> string_sequence(0)
// "0"
// >>> string_sequence(5)
// "0 1 2 3 4 5"
function string_sequence(n){
let arr = [];
for(let i = 0; i <= n; i++){
arr.push(i);
}
return arr.join(" "); | } | |
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// Given a positive integer n, return the count of the numbers of n-digit
// positive integers that start or end with 1.
public st... | long count = 0; | for (long i = lower; i <= upper; i++) {
String s = "" + i;
if (s.startsWith("1") || s.endsWith("1"))
count++;
}
return count;
}
} |
//Filter given array of any jsthon values only for integers
// >>> filter_integers(["a", 3.14, 5])
// [5]
// >>> filter_integers([1, 2, 3, "abc", {}, []])
// [1, 2, 3]
function filter_integers(values){
var result = [];
values.forEach(function(value){ | if(typeof value === "number" && value % 1 === 0){ | result.push(value);
}
});
return result;
}
|
//"Given an array representing a branch of a tree that has non-negative integer nodes
// your task is to pluck one of the nodes and return it.
// The plucked node should be the node with the smallest even value.
// If multiple nodes with the same smallest even value are found return the node that has smallest index.
//... | } | |
//You are given a string representing a sentence,
// the sentence contains some words separated by a space,
// and you have to return a string that contains the words from the original sentence,
// whose lengths are prime numbers,
// the order of the words in the new string should be the same as the original one.
// Ex... | break; | }
}
return isPrime;
}).join(' ');
} |
//Evaluate whether the given number n can be written as the sum of exactly 4 positive even numbers
// Example
// >>> is_equal_to_sum_even(4)
// false
// >>> is_equal_to_sum_even(6)
// false
// >>> is_equal_to_sum_even(8)
// true
function is_equal_to_sum_even(n){
let m =0;
for(let i=2;i<n;i+=2){
for(let ... | for(let k=2;k<n;k+=2){ | for(let l=2;l<n;l+=2){
if((i+j+k+l)==n){
m=1;
break;
}
}
}
}
}
if(m==1){
return true;
}
else{
return false;
}
} |
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// Given an array array list of positive integers x. return a sorted array list of all
// elements that hasn't any even digit.
//... | boolean unique = true; | long z = x.get(i);
while (z > 0) {
long y = z % 10;
if (y % 2 == 0) {
unique = false;
break;
}
z = z / 10;
}
if (unique) {
b.add(x.get(i));
... |
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// For a given array list of input numbers, calculate Mean Absolute Deviation
// around the mean of this dataset.
// Mean Absolute... | } | |
from typing import Union
def compare_one(a: Union[int, float, str], b: Union[int, float, str]) -> Union[int, float, str, None]:
"""
Create a function that takes integers, floats, or strings representing
real numbers, and returns the larger variable in its given variable type.
Return None if the values ... | a_tmp = a.replace(',', '.') | if float(a_tmp) > b:
return a
elif float(a_tmp) < b:
return b
else:
return None
elif isinstance(a, int) and isinstance(b, str):
b_tmp = b.replace(',', '.')
if a > float(b_tmp):
return a
elif a < float(b_tmp):
... |
//It is the last week of the semester and the teacher has to give the grades
// to students. The teacher has been making her own algorithm for grading.
// The only problem is, she has lost the code she used for grading.
// She has given you an array of GPAs for some students and you have to write
// a function that ca... | else if (grades[i] > 2.7){ | grades_array.push("B");
}
else if (grades[i] > 2.3){
grades_array.push("B-");
}
else if (grades[i] > 2.0){
grades_array.push("C+");
}
else if (grades[i] > 1.7){
grades_array.push("C");
}
else if (grades[i] > ... |
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// Write a function that accepts two array lists of strings and returns the array list that has
// total number of chars in the all s... | } | }
} |
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// From an array array list of integers, remove all elements that occur more than once.
// Keep order of elements left the same as in ... | HashMap<Long, Long> hashmap = new HashMap<Long, Long>(); | for (int i = 0; i < numbers.size(); i++) {
Long key = numbers.get(i);
if (hashmap.containsKey(key)) {
hashmap.put(key, hashmap.get(key) + 1);
} else {
hashmap.put(key, 1L);
}
}
ArrayList<Long> out = new ArrayList<Lon... |
from typing import List
def select_words(s: str, n: int) -> List[str]:
"""Given a string s and a natural number n, you have been tasked to implement
a function that returns a list of all words from string s that contain exactly
n consonants, in order these words appear in the string s.
If the string ... | CONSONANTS = 'bcdfghjklmnpqrstvwxyz' | words = s.split()
result = []
for word in words:
count = 0
for char in word:
if char.lower() in CONSONANTS:
count += 1
if count == n:
result.append(word)
return result
|
//You are given an array arr of integers and you need to return
// sum of magnitudes of integers multiplied by product of all signs
// of each number in the array, represented by 1, -1 or 0.
// Note: return undefined for empty arr.
// Example:
// >>> prod_signs([1, 2, 2, -4])
// 9
// >>> prod_signs([0, 1])
// 0
// >>> ... | var len = arr.length; | var pro = 1;
if(len == 0){
return undefined;
}
else{
for(var i = 0; i < len; i++){
total += Math.abs(arr[i]);
if(arr[i] < 0){
pro *= -1;
}
else if(arr[i] == 0){
pro *= 0;
}
}
total *= pro;
... |
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// Check if in given array list of numbers, are any two numbers closer to each other than
// given threshold.
// >>> hasCloseEleme... | Collections.sort(numbers); | for (int i = 0; i < numbers.size() - 1; i++) {
if (numbers.get(i+1) - numbers.get(i) < threshold) {
return true;
}
}
return false;
}
} |
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// Given an array array list of numbers, return whether or not they are sorted
// in ascending order. If array list has more than 1 du... | else { | int running_max = 0;
int previous_number = 0;
boolean first_time = true;
boolean seen_2_in_a_row = false;
for (Long number : lst) {
if (first_time) {
first_time = false;
previous_number = number.intValue(... |
from typing import List
def intersperse(numbers: List[int], delimeter: int) -> List[int]:
""" Insert a number 'delimeter' between every two consecutive elements of input list `numbers'
>>> intersperse([], 4)
[]
>>> intersperse([1, 2, 3], 4)
[1, 4, 2, 4, 3]
"""
| result = [] | if len(numbers) == 0:
return result
result.append(numbers[0])
for num in numbers[1:]:
result.append(delimeter)
result.append(num)
return result
|
//You are given an array of two strings, both strings consist of open
// parentheses '(' or close parentheses ')' only.
// Your job is to check if it is possible to concatenate the two strings in
// some order, that the resulting string will be good.
// A string S is considered to be good if and only if all parentheses... | } | return 'No';
} |
//pairs_sum_to_zero takes an array of integers as an input.
// it returns true if there are two distinct elements in the array that
// sum to zero, and false otherwise.
// >>> pairs_sum_to_zero([1, 3, 5, 0])
// false
// >>> pairs_sum_to_zero([1, 3, -2, 1])
// false
// >>> pairs_sum_to_zero([1, 2, 3, 7])
// false
// >>>... | if ((l[i] + l[j]) === 0){ | return true
}
j = j + 1
}
i = i + 1
}
return false
}
|
//The Brazilian factorial is defined as:
// brazilian_factorial(n) = n! * (n-1)! * (n-2)! * ... * 1!
// where n > 0
// For example:
// >>> special_factorial(4)
// 288
// The function will receive an integer as input and should return the special
// factorial of this integer.
function special_factorial(n){
if (n > 0... | } | }
|
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// Return the largest prime factor of n. Assume n > 1 and is not a prime.
// >>> largestPrimeFactor((13195l))
// (29l)
// >>> ... | primes.add(x); | }
return primes.get(primes.size() - 1);
}
} |
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// Given an array array list of strings, where each string consists of only digits, return an array array list.
// Each element i of t... | } | } |
//Circular shift the digits of the integer x, shift the digits right by shift
// and return the result as a string.
// If shift > number of digits, return digits reversed.
// >>> circular_shift(12, 1)
// "21"
// >>> circular_shift(12, 2)
// "12"
function circular_shift(x, shift){
var str = x.toString();
var len = str... | return res; | }
|
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// brackets is a string of "(" and ")".
// return true if every opening bracket has a corresponding closing bracket.
// >>> correc... | return false; | }
}
return balance == 0;
}
} |
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// You are given a non-empty array list of positive integers. Return the greatest integer that is greater than
// zero, and has a fre... | return max; | }
} |
//Input are two strings a and b consisting only of 1s and 0s.
// Perform binary XOR on these inputs and return result also as a string.
// >>> string_xor("010", "110")
// "100"
function string_xor(a, b){
var arrayA = [];
var arrayB = [];
var arrayXOR = [];
var result = '';
for (var i = 0; i < a.length; i++) { | arrayA.push(parseInt(a[i])); | }
for (var j = 0; j < b.length; j++) {
arrayB.push(parseInt(b[j]));
}
for (var k = 0; k < arrayA.length; k++) {
if (arrayA[k] !== arrayB[k]) {
arrayXOR.push(1);
}
else {
arrayXOR.push(0);
}
}
result = arrayXOR.join('');
return result;
} |
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// Given a positive integer n, return a sorted array list that has the odd numbers in collatz sequence.
// The Collatz conjecture is a... | return ans; | }
} |
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// Create a function which takes a string representing a file's name, and returns
// 'Yes' if the the file's name is valid, and return... | for (int i = 0; i < name.length(); i++) { | if (Character.isDigit(name.charAt(i))) {
count++;
}
}
if (count > 3) {
return result;
}
if (name.length() == 0) {
return result;
}
if (!Character.isLetter(name.charAt(0))) {
return result;
... |
from typing import List
def smallest_change(arr: List[int]) -> int:
"""
Given an array arr of integers, find the minimum number of elements that
need to be changed to make the array palindromic. A palindromic array is an array that
is read the same backwards and forwards. In one change, you can change ... | end -= 1 | return count
|
//Given a positive integer, obtain its roman numeral equivalent as a string,
// and return it in lowercase.
// Restrictions: 1 <= num <= 1000
// Examples:
// >>> int_to_mini_roman(19)
// "xix"
// >>> int_to_mini_roman(152)
// "clii"
// >>> int_to_mini_roman(426)
// "cdxxvi"
function int_to_mini_roman(number){
var r... | output += roman_conversion[key_list[i]]; | number -= key_list[i];
break;
}
}
}
return output;
}
|
//You'll be given a string of words, and your task is to count the number
// of boredoms. A boredom is a sentence that starts with the word "I".
// Sentences are delimited by '.', '?' or '!'.
// For example:
// >>> is_bored("Hello world")
// 0
// >>> is_bored("The sky is blue. The sun is shining. I love this weather")
... | return boredoms; | }
|
//Write a function vowels_count which takes a string representing
// a word as input and returns the number of vowels in the string.
// Vowels in this case are 'a', 'e', 'i', 'o', 'u'. Here, 'y' is also a
// vowel, but only when it is at the end of the given word.
// Example:
// >>> vowels_count("abcde")
// 2
// >>> vo... | } | }
if(s[s.length-1]=='y'){
count++;
}
return count;
}
|
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// You are given an array array list of numbers.
// You need to return the sum of squared numbers in the given array list,
// roun... | } | return sum;
}
} |
from typing import List
def get_odd_collatz(n: int) -> List[int]:
"""
Given a positive integer n, return a sorted list that has the odd numbers in collatz sequence.
The Collatz conjecture is a conjecture in mathematics that concerns a sequence defined
as follows: start with any positive integer n. The... | current_num = current_num * 3 + 1 | collatz_list.append(1)
return sorted(list(set([x for x in collatz_list if x % 2 != 0])))
|
import java.util.*;
import java.lang.reflect.*;
import org.javatuples.*;
import java.security.*;
import java.math.*;
import java.io.*;
import java.util.stream.*;
class Problem {
// Given the lengths of the three sides of a triangle. Return true if the three
// sides form a right-angled triangle, false otherwise... | return a*a + b*b == c*c || b*b + c*c == a*a || c*c + a*a == b*b; | }
} |
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