prefix stringlengths 0 918k | middle stringlengths 0 812k | suffix stringlengths 0 962k |
|---|---|---|
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 is a space-delimited string of numberals from 'zero' to 'nine'.
// Valid choices are 'zero', 'one', 'two', 'three', 'four', '... | String [] split = numbers.split(" "); | Arrays.sort(split, new Comparator<String>() {
@Override
public int compare(String s1, String s2) {
return indexMap.get(s1) - indexMap.get(s2);
}
});
return String.join(" ", split);
}
} |
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 {
// prime_fib returns n-th number that is a Fibonacci number and it's also prime.
// >>> primeFib((1l))
// (2l)
// >>> primeFib... | return fib; | }
} |
//Given a non-empty array of integers lst. add the even elements that are at odd indices..
// Examples:
// >>> add([4, 2, 6, 7])
// 2
function add(lst){
var add = 0;
for(var i = 0; i < lst.length; i++) {
if(lst[i] % 2 == 0 && i % 2 != 0) { | add += lst[i]; | }
}
return add;
} |
from typing import List
def count_up_to(n: int) -> List[int]:
"""Implement a function that takes an non-negative integer and returns an array of the first n
integers that are prime numbers and less than n.
for example:
>>> count_up_to(5)
[2, 3]
>>> count_up_to(11)
[2, 3, 5, 7]
>>> count... | result.append(number) | 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 non-empty array list of integers, return the sum of all of the odd elements that are in even positions.
// Examples
// ... | if (i % 2 == 0 && lst.get(i) % 2 == 1) { | sum += lst.get(i);
}
}
return sum;
}
} |
//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");
... |
//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... | last = x; | } else if (x < last){
return false;
} else if (x == last){
if (dupe_found){
return false;
} else {
dupe_found = true;
}
} else {
last = x;
dupe_found = false;
}
}
return true;
... |
def get_max_triples(n: int) -> int:
"""
You are given a positive integer n. You have to create an integer array a of length n.
For each i (1 ≤ i ≤ n), the value of a[i] = i * i - i + 1.
Return the number of triples (a[i], a[j], a[k]) of a where i < j < k,
and a[i] + a[j] + a[k] is a multipl... | k = 2 | count = 0
while (i < n - 2):
while (j < n - 1):
while (k < n):
if (a[i] + a[j] + a[k]) % 3 == 0:
count += 1
k += 1
j += 1
k = j + 1
i += 1
j = i + 1
k = j + 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 {
// Write a function that takes a message, and encodes in such a
// way that it swaps case of all letters, replaces all vowels in
... | arr[i] = Character.toUpperCase(arr[i]); | }
}
return new String(arr);
}
} |
//You are given an array of integers.
// You need to find the largest prime value and return the sum of its digits.
// Examples:
// >>> skjkasdkd([0, 3, 2, 1, 3, 5, 7, 4, 5, 5, 5, 2, 181, 32, 4, 32, 3, 2, 32, 324, 4, 3])
// 10
// >>> skjkasdkd([1, 0, 1, 8, 2, 4597, 2, 1, 3, 40, 1, 2, 1, 2, 4, 2, 5, 1])
// 25
// >>> skj... | for (let i=0; i<digits.length; i++){ | sum += Number(digits[i]);
}
return sum;
} |
//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 ( - )
... | break; | case '**':
operand[count] = Math.pow(operand[count], operand[count + 1]);
operand.splice(count + 1, 1);
operator.splice(count, 1);
count = 0;
do_again = true;
break;
default:
count++;
do_again = false;
}
}
answer = operand[0];
operand... |
def modp(n: int, p: int) -> int:
"""Return 2^n modulo p (be aware of numerics).
>>> modp(3, 5)
3
>>> modp(1101, 101)
2
>>> modp(0, 101)
1
>>> modp(3, 11)
8
>>> modp(100, 101)
1
"""
if p <= 0:
raise ValueError("modp: invalid p")
if n < 0: | raise ValueError("modp: invalid n") | return 1 if n == 0 else 2**(n % (p-1)) % p
|
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 true if all numbers in the array list l are below threshold t.
// >>> belowThreshold((new ArrayList<Long>(Arrays.asList((lon... | } | |
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 text, replace all spaces in it with underscores,
// and if a string has more than 2 consecutive spaces,
// the... | } | } |
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 product of the odd digits.
// Return 0 if all digits are even.
// For example:
// >>... | return n % 2 == 1 ? n : 0; | }
return digits(n / 10) * (n % 2 == 1 ? n % 10 : 1);
}
} |
//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 ( - )
... | switch(operator[0]){ | case '+':
answer += operand[0];
break;
case '-':
answer -= operand[0];
break;
}
operand.splice(0, 1);
operator.splice(0, 1);
}
return answer;
}
|
from typing import List
def minPath(grid: List[List[int]], k: int) -> List[int]:
"""
Given a grid with N rows and N columns (N >= 2) and a positive integer k,
each cell of the grid contains a value. Every integer in the range [1, N * N]
inclusive appears exactly once on the cells of the grid.
You... | if 0 <= i < len(grid) and 0 <= j < len(grid[0]) and grid[i][j] < min_val: | min_val = grid[i][j]
row = i
col = j
path.append(min_val)
return path |
//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.... | else{ | odds ++;
}
}
return [evens, odds];
}
|
//I think we all remember that feeling when the result of some long-awaited
// event is finally known. The feelings and thoughts you have at that moment are
// definitely worth noting down and comparing.
// Your task is to determine if a person correctly guessed the results of a number of matches.
// You are given two ... | } | 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 {
// You are given an array array list of integers.
// You need to find the largest prime value and return the sum of its digits.
//... | l++; | }
}
if (counter == 2) {
if (number > largestPrime) {
largestPrime = number;
}
}
}
if (largestPrime == 0) {
return 0l;
}
else {
long output = 0l;
whi... |
//Find the shortest palindrome that begins with a supplied string.
// Algorithm idea is simple:
// - Find the longest postfix of supplied string that is a palindrome.
// - Append to the end of the string reverse of a string prefix that comes before the palindromic suffix.
// >>> make_palindrome("")
// ""
// >>> make_pa... | return string; | }
|
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... | String[] splitted = s.split(" "); | long apples = Long.parseLong(splitted[0]);
long oranges = Long.parseLong(splitted[3]);
return n - apples - oranges;
}
} |
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... | return result; | }
return "Yes";
}
} |
from typing import Union
def rounded_avg(n: int, m: int) -> Union[str, int]:
"""You are given two positive integers n and m, and your task is to compute the
average of the integers from n through m (including n and m).
Round the answer to the nearest integer and convert that to binary.
If n is greater... | rounded_avg = round(((n + m) / 2)) | return(bin(rounded_avg))
else:
return(-1) |
//From an array of integers, remove all elements that occur more than once.
// Keep order of elements left the same as in the input.
// >>> remove_duplicates([1, 2, 3, 2, 4])
// [1, 3, 4]
function remove_duplicates(numbers){
let result = [];
numbers.forEach(function(value){
if(numbers.indexOf(value) ===... | }); | 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, obtain its roman numeral equivalent as a string,
// and return it in lowercase.
// Restrictions: 1 <=... | } | |
def change_base(x: int, base: int) -> str:
"""Change numerical base of input number x to base.
return string representation after the conversion.
base numbers are less than 10.
>>> change_base(8, 3)
'22'
>>> change_base(8, 2)
'1000'
>>> change_base(7, 2)
'111'
"""
if x == 0:
... | x //= base | return ''.join(ans[::-1])
|
def file_name_check(file_name: str) -> str:
"""Create a function which takes a string representing a file's name, and returns
'Yes' if the the file's name is valid, and returns 'No' otherwise.
A file's name is considered to be valid if and only if all the following conditions
are met:
- There shoul... | if i.isdigit(): | s_count += 1
if i == '.':
e_count += 1
if s_count > 3 or e_count != 1:
return 'No'
s_name = file_name.split('.')[0]
e_name = file_name.split('.')[1]
if not s_name or not e_name or not s_name[0].isalpha():
return 'No'
if e_name not in ['txt', 'exe', 'dl... |
from typing import List, Optional
def next_smallest(lst: List[int]) -> Optional[int]:
"""
You are given a list of integers.
Write a function next_smallest() that returns the 2nd smallest element of the list.
Return None if there is no such element.
>>> next_smallest([1, 2, 3, 4, 5])
2
>>> n... | min2 = lst[i] | return min2 if min1 != min2 else None
|
//Given a positive integer n, return the product of the odd digits.
// Return 0 if all digits are even.
// For example:
// >>> digits(1)
// 1
// >>> digits(4)
// 0
// >>> digits(235)
// 15
function digits(n){
if(!n){
return "error";
}
if(n < 0){
return "error";
}
var temp = 0;
va... | } | }
if(odd){
return 0;
}
return prod;
}
|
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... | } | |
//Given an array of integers, sort the integers that are between 1 and 9 inclusive,
// reverse the resulting array, and then replace each digit by its corresponding name from
// "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine".
// For example:
// >>> by_length([2, 1, 1, 4, 5, 8, 2, 3])
// ["Eight"... | arr2.push(num); | }
}
arr2.sort();
arr2.reverse();
var arr3 = [];
for(var i = 0; i < arr2.length; i++){
var num = arr2[i];
if(num == 1){
arr3.push("One");
}
else if(num == 2){
arr3.push("Two");
}
else if(num == 3){
arr3.push("... |
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... | } | }
int j = 0;
for (int i = 0; i < l.size(); i++) {
if (i % 3 == 0) {
l_s.add(l_e.get(j));
j++;
} else {
l_s.add(l_r.get(i - j));
}
}
return l_s;
}
} |
from typing import List
def numerical_letter_grade(grades: List[float]) -> List[str]:
"""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.
Sh... | return final | |
//Given an array of integers, sort the integers that are between 1 and 9 inclusive,
// reverse the resulting array, and then replace each digit by its corresponding name from
// "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine".
// For example:
// >>> by_length([2, 1, 1, 4, 5, 8, 2, 3])
// ["Eight"... | else if(num == 4){ | arr3.push("Four");
}
else if(num == 5){
arr3.push("Five");
}
else if(num == 6){
arr3.push("Six");
}
else if(num == 7){
arr3.push("Seven");
}
else if(num == 8){
arr3.push("Eight");
}
... |
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 encrypt that takes a string as an argument and
// returns a string encrypted with the alphabet being rotated.
... | StringBuffer b = new StringBuffer(); | for (char c : s.toCharArray()) {
b.append((char)((c+4) > 'z' ? (((c+4)%'z')+'a'-1) : c+4));
}
return b.toString();
}
} |
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 2 words. You need to return true if the second word or any of its rotations is a substring in the first word
// >>> c... | if (found) break; | }
return found;
}
} |
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... | } | } else if (chars[i] == '.') {
if (i + 1 < chars.length && chars[i + 1] == '|') {
res.add((long)1l);
i += 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 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... | } | }
long units = level / capacity;
if (level % capacity != 0l) {
units += 1l;
}
count += units;
}
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 {
// 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 algo... | letterGrades.add("B"); | } else if (currentGrade > 2.3f) {
letterGrades.add("B-");
} else if (currentGrade > 2.0f) {
letterGrades.add("C+");
} else if (currentGrade > 1.7f) {
letterGrades.add("C");
} else if (currentGrade > 1.3f) {
l... |
//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... | min_strength = strength; | output = class_name + "." + extensions[i];
}
}
return output;
}
|
//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... | for (let j = 0; j < array.length; j++){ | if (lst[i][j] === x){
coordinates.push([i, j]);
}
}
}
return coordinates.sort(function(a, b){
return a[0] - b[0] || b[1] - a[1];
});
}
|
from typing import List
def mean_absolute_deviation(numbers: List[float]) -> float:
""" For a given list of input numbers, calculate Mean Absolute Deviation
around the mean of this dataset.
Mean Absolute Deviation is the average absolute difference between each
element and a centerpoint (mean in this c... | print(mean_absolute_deviation([1.0, 2.0, 3.0, 4.0])) | |
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 a non-empty array list of integers lst. add the even elements that are at odd indices..
// Examples:
// >>> add((new Arra... | for (int i = 0; i < lst.size(); i++) { | if (i % 2 == 1 && lst.get(i) % 2 == 0) {
sum += lst.get(i);
}
}
return sum;
}
} |
//You're given an array of deposit and withdrawal operations on a bank account that starts with
// zero balance. Your task is to detect if at any point the balance of account fallls below zero, and
// at that point function should return true. Otherwise it should return false.
// >>> below_zero([1, 2, 3])
// false
// >... | sum += operations[i]; | if (sum < 0) {
return true;
}
}
return false;
}
|
//Your task is to implement a function that will simplify the expression
// x * n. The function returns true if x * n evaluates to a whole number and false
// otherwise. Both x and n, are string representation of a fraction, and have the following format,
// <numerator>/<denominator> where both numerator and denominato... | let nDenominator = parseInt(n.split('/')[1]); | let xTimesN = xNumerator * nNumerator / (xDenominator * nDenominator);
return Number.isInteger(xTimesN);
}
|
from typing import List
def unique_digits(x: List[int]) -> List[int]:
"""Given a list of positive integers x. return a sorted list of all
elements that hasn't any even digit.
Note: Returned list should be sorted in increasing order.
For example:
>>> unique_digits([15, 33, 1422, 1])
[1, 1... | x.remove(i) | return sorted(x)
|
//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... | for(let item of lst1){ | sum_lst1 += item.length;
}
for(let item of lst2){
sum_lst2 += item.length;
}
if(sum_lst1 > sum_lst2){
return lst2;
}
else{
return lst1;
}
}
|
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 word. Your task is to find the closest vowel that stands between
// two consonants from the right side of the word... | idx.add(i); | }
}
for (int i = idx.size() - 1; i >= 0; i--) {
int j = idx.get(i);
if (j == 0 || j == word.length() - 1) continue;
char left = word.charAt(j - 1);
char right = word.charAt(j + 1);
if (consonants.indexOf(left) != -1 && consonants.in... |
//Return maximum element in the array.
// >>> max_element([1, 2, 3])
// 3
// >>> max_element([5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10])
// 123
function max_element(l){
| return Math.max.apply(null, l); | }
|
from typing import List
def f(n: int) -> List[int]:
""" Implement the function f that takes n as a parameter,
and returns a list of size n, such that the value of the element at index i is the factorial of i if i is even
or the sum of numbers from 1 to i otherwise.
i starts from 1.
the factorial of... | return a | pass |
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 {
// Your task is to implement a function that will simplify the expression
// x * n. The function returns true if x * n evaluates to a ... | int res_denom = x_denom * n_denom; | return (res_num % res_denom == 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... | int month = Integer.parseInt(parts[0]); | int day = Integer.parseInt(parts[1]);
int year = Integer.parseInt(parts[2]);
if (month < 1 || month > 12) return valid_date;
if (month == 2) {
if (day < 1 || day > 29) return valid_date;
} else if (month == 1 || month == 3 || month == 5 || mont... |
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 representing a branch of a tree that has non-negative integer nodes
// your task is to pluck one of the ... | minIndex = i; | minValue = arr.get(i);
}
}
}
ArrayList<Long> newArr = new ArrayList<Long>();
if (minIndex == -1) {
return newArr;
}
newArr.add(minValue);
newArr.add((long)minIndex);
return newArr;
}
} |
//Given a positive integer n, return the product of the odd digits.
// Return 0 if all digits are even.
// For example:
// >>> digits(1)
// 1
// >>> digits(4)
// 0
// >>> digits(235)
// 15
function digits(n){
if(!n){
return "error";
}
if(n < 0){
return "error";
}
var temp = 0;
va... | temp = n % 10; | if(temp % 2 != 0){
prod *= temp;
odd = false;
}
}
if(odd){
return 0;
}
return prod;
}
|
//I think we all remember that feeling when the result of some long-awaited
// event is finally known. The feelings and thoughts you have at that moment are
// definitely worth noting down and comparing.
// Your task is to determine if a person correctly guessed the results of a number of matches.
// You are given two ... | result.push(0); | } else {
result.push(Math.abs(game[i] - guess[i]));
}
}
return result;
}
|
//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;
}
|
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 an array array list of strings.
// The array list contains different words. Return the word with maxi... | uniqueCharacters.add(c); | }
wordsToUniqueCharacters.put(word, uniqueCharacters.size());
}
words.sort(new Comparator<String>() {
@Override
public int compare(String o1, String o2) {
int compareResult = wordsToUniqueCharacters.get(o2).compareTo(wordsToUniqueCharacters... |
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 {
// sum_to_n is a function that sums numbers from 1 to n.
// >>> sumToN((30l))
// (465l)
// >>> sumToN((100l))
// (5050l)
... | return (n * (n + 1)) / 2; | }
} |
//Given a positive integer N, return the total sum of its digits in binary.
// Example
// >>> solve(1000)
// "1"
// >>> solve(150)
// "110"
// >>> solve(147)
// "1100"
// Variables:
// @N integer
// Constraints: 0 ≤ N ≤ 10000.
// Output:
// a string of binary number
function solve(N){
let newN = N.toString();
l... | let digit = newN[i]; | total += parseInt(digit);
}
return total.toString(2);
} |
//brackets is a string of "(" and ")".
// return true if every opening bracket has a corresponding closing bracket.
// >>> correct_bracketing("(")
// false
// >>> correct_bracketing("()")
// true
// >>> correct_bracketing("(()())")
// true
// >>> correct_bracketing(")(()")
// false
function correct_bracketing(brackets)... | } | if (opens.length == 0){
return true;
}
else {
return false;
}
} |
//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.
// >>>... | if(n <= 0){ | return 0;
}
if(n == 1){
return 0;
}
if(n == 2){
return 1;
}
return fibfib(n-1) + fibfib(n-2) + fibfib(n-3);
}
|
//Input is a space-delimited string of numberals from 'zero' to 'nine'.
// Valid choices are 'zero', 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight' and 'nine'.
// Return the string with numbers sorted from smallest to largest
// >>> sort_numbers("three one five")
// "one three five"
function sort_number... | "four": 4, | "five": 5,
"six": 6,
"seven": 7,
"eight": 8,
"nine": 9
};
numString.sort(function(a, b){
return numMap[a] - numMap[b];
});
numString = numString.join(" ");
return numString;
} |
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 string representing a sentence,
// the sentence contains some words separated by a space,
// and you have to re... | } | }
if (ans.length() > 0) {
ans.deleteCharAt(ans.length() - 1);
}
return ans.toString();
}
} |
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 {
// Evaluate whether the given number n can be written as the sum of exactly 4 positive even numbers
// Example
// >>> isEqualToSum... | d = 1; | }
long minX = d;
long maxX = n / 4;
while (minX <= maxX) {
long x = (minX + maxX) / 2;
long y = n - 2 * x;
if (y % 2 == 1) {
y--;
}
if (2 * x + y < n) {
minX = x + 1;
} else if (2 * x ... |
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 containing multiple groups of nested parentheses. Your goal is to
// separate those group into s... | int open_paren = 0; | for (int i = 0; i < paren_string.length(); i++) {
char c = paren_string.charAt(i);
if (c == '(') {
if (open_paren == 0) {
temp = new StringBuffer();
}
open_paren++;
temp.append(c);
} else if (c == ')') {
open_paren--;
temp.append(c);
if (open_paren == 0) {
output.add(tem... |
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 {
// Find how many times a given substring can be found in the original string. Count overlaping cases.
// >>> howManyTimes((""), ("a"))... | } | |
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 {
// Evaluate whether the given number n can be written as the sum of exactly 4 positive even numbers
// Example
// >>> isEqualToSum... | long y = n - 2 * x; | if (y % 2 == 1) {
y--;
}
if (2 * x + y < n) {
minX = x + 1;
} else if (2 * x + y > n) {
maxX = x - 1;
} else {
return true;
}
}
return false;
}
} |
def vowels_count(s: str) -> int:
"""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:
... | count += 1 | i += 1
return count
|
from typing import List
def move_one_ball(arr: List[int]) -> bool:
"""We have an array 'arr' of N integers arr[1], arr[2], ..., arr[N].The
numbers in the array will be randomly ordered. Your task is to determine if
it is possible to get an array sorted in non-decreasing order by performing
the followi... | return True | |
def int_to_mini_roman(number: int) -> str:
"""
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(... | roman_numeral = '' | for key in sorted(roman_numerals.keys(), reverse=True):
roman_numeral += roman_numerals[key] * (number // key)
number = number % key
return roman_numeral
|
//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... | return false; | } else {
dupe_found = true;
}
} else {
last = x;
dupe_found = false;
}
}
return true;
}
|
//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... | } | }
|
from typing import List
def unique_digits(x: List[int]) -> List[int]:
"""Given a list of positive integers x. return a sorted list of all
elements that hasn't any even digit.
Note: Returned list should be sorted in increasing order.
For example:
>>> unique_digits([15, 33, 1422, 1])
[1, 1... | while temp: | if temp%2==0:
s.append(i)
break
temp=temp//10
for i in s:
x.remove(i)
return sorted(x)
|
//Given a grid with N rows and N columns (N >= 2) and a positive integer k,
// each cell of the grid contains a value. Every integer in the range [1, N * N]
// inclusive appears exactly once on the cells of the grid.
// You have to find the minimum path of length k in the grid. You can start
// from any cell, and in e... | neighbours.push(grid[x][y + 1]); | }
let nextCell = neighbours[0];
for(let i = 0; i < neighbours.length; i++){
let curr = neighbours[i];
if(curr < nextCell){
nextCell = curr;
}
}
currCell = nextCell;
}
return path;
} |
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 string s.
// if s[i] is a letter, reverse its case from lower to upper or vise versa,
// otherwise keep it as ... | } else { | sb.append(Character.toUpperCase(s.charAt(i)));
}
} else {
sb.append(s.charAt(i));
}
}
if (letterNotFound) {
return sb.reverse().toString();
}
return sb.toString();
}
} |
//Given an array of non-negative integers, return a cojs of the given array after sorting,
// you will sort the given array in ascending order if the sum( first index value, last index value) is odd,
// or sort it in descending order if the sum( first index value, last index value) is even.
// Note:
// * don't change t... | newArr = array.sort(function(a, b){return b - a;}); | }else{
newArr = array.sort(function(a, b){return a - b;});
}
return newArr;
} |
from typing import List
def minPath(grid: List[List[int]], k: int) -> List[int]:
"""
Given a grid with N rows and N columns (N >= 2) and a positive integer k,
each cell of the grid contains a value. Every integer in the range [1, N * N]
inclusive appears exactly once on the cells of the grid.
You... | for i in range(len(grid)): | for j in range(len(grid[0])):
if grid[i][j] < min_val:
min_val = grid[i][j]
row = i
col = j
path = [min_val]
while len(path) < k:
min_val = float('inf')
for i, j in (row - 1, col), (row + 1, col), (row, col - 1), (row, col + 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 {
// Change numerical base of input number x to base.
// return string representation after the conversion.
// base numbers are less... | } | return sb.reverse().toString();
}
} |
from typing import List
def has_close_elements(numbers: List[float], threshold: float) -> bool:
""" Check if in given list of numbers, are any two numbers closer to each other than
given threshold.
>>> has_close_elements([1.0, 2.0, 3.0], 0.5)
False
>>> has_close_elements([1.0, 2.8, 3.0, 4.0, 5.0, 2... | for j in range(i + 1, len(numbers)): | if abs(numbers[i] - numbers[j]) < 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 {
// You are given a string representing a sentence,
// the sentence contains some words separated by a space,
// and you have to re... | isPrime = true; | break;
}
}
if (isPrime) {
ans.append(word + " ");
}
}
if (ans.length() > 0) {
ans.deleteCharAt(ans.length() - 1);
}
return ans.toString();
}
} |
//xs represent coefficients of a polynomial.
// xs[0] + xs[1] * x + xs[2] * x^2 + ....
// Return derivative of this polynomial in the same form.
// >>> derivative([3, 1, 2, 4, 5])
// [1, 4, 12, 20]
// >>> derivative([1, 2, 3])
// [2, 6]
function derivative(xs){
let coeff = [];
for(let i = 1; i < xs.length; i++)... | } | |
//Given a positive integer n, return the product of the odd digits.
// Return 0 if all digits are even.
// For example:
// >>> digits(1)
// 1
// >>> digits(4)
// 0
// >>> digits(235)
// 15
function digits(n){
if(!n){
return "error";
}
if(n < 0){
return "error";
}
var temp = 0;
va... | prod *= temp; | odd = false;
}
}
if(odd){
return 0;
}
return prod;
}
|
//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.
// Examples:
// >>> encode("test")
// "TGST"
// >>> encode("Th... | } | |
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... | if (i + 1 < chars.length && chars[i + 1] == '|') { | res.add((long)2l);
i += 1;
} else {
res.add((long)4l);
}
} else if (chars[i] == '.') {
if (i + 1 < chars.length && chars[i + 1] == '|') {
res.add((long)1l);
i +... |
from typing import List
def minSubArraySum(nums: List[int]) -> int:
"""
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
"""
| for i in range(1, len(nums)): | nums[i] = min(nums[i], nums[i] + nums[i - 1])
return min(nums)
|
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 hash map, return true if all keys are strings in lower
// case or all keys are strings in upper case, else return false.
... | boolean allLowerCase = dict.keySet().stream().allMatch(k -> k.matches("^[a-z]+$")); | boolean allUpperCase = dict.keySet().stream().allMatch(k -> k.matches("^[A-Z]+$"));
return allLowerCase || allUpperCase;
}
} |
//Given a positive integer n, return the product of the odd digits.
// Return 0 if all digits are even.
// For example:
// >>> digits(1)
// 1
// >>> digits(4)
// 0
// >>> digits(235)
// 15
function digits(n){
| if(!n){ | return "error";
}
if(n < 0){
return "error";
}
var temp = 0;
var prod = 1;
var odd = true;
for(n; n > 0; n = Math.floor(n/10)){
temp = n % 10;
if(temp % 2 != 0){
prod *= temp;
odd = false;
}
}
if(odd){
return 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 an array array list representing a branch of a tree that has non-negative integer nodes
// your task is to pluck one of the ... | } | newArr.add(minValue);
newArr.add((long)minIndex);
return newArr;
}
} |
def count_distinct_characters(string: str) -> int:
""" Given a string, find out how many distinct characters (regardless of case) does it consist of
>>> count_distinct_characters('xyzXYZ')
3
>>> count_distinct_characters('Jerry')
4
"""
assert isinstance(string, str)
s = set()
for l i... | return len(s) | |
from typing import List
def exchange(lst1: List[int], lst2: List[int]) -> str:
"""In this problem, you will implement a function that takes two lists of numbers,
and determines whether it is possible to perform an exchange of elements
between them to make lst1 a list of only even numbers.
There is no l... | if x % 2 == 1: | count += 1
for y in lst2:
if y % 2 == 0:
count -= 1
if count > 0:
return "NO"
else:
return "YES" |
from typing import List
def get_positive(l: List[int]) -> List[int]:
"""Return only positive numbers in the list.
>>> get_positive([-1, 2, -4, 5, 6])
[2, 5, 6]
>>> get_positive([5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10])
[5, 3, 2, 3, 9, 123, 1]
"""
| p = [] | for i in l:
if i > 0:
p.append(i)
return p
|
def count_distinct_characters(string: str) -> int:
""" Given a string, find out how many distinct characters (regardless of case) does it consist of
>>> count_distinct_characters('xyzXYZ')
3
>>> count_distinct_characters('Jerry')
4
"""
assert isinstance(string, str)
s = set() | for l in string: | s.add(l.lower())
return len(s)
|
def get_closest_vowel(word: str) -> str:
"""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 a... | return word[i] | return ''
|
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.
//... | int l = 1; | while (l <= (int) number) {
if (number % l == 0) {
counter++;
}
l++;
}
}
if (counter == 2) {
if (number > largestPrime) {
largestPrime = number;... |
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... | l1.stream() | .filter(l2::contains)
.collect(Collectors.toSet())
);
}
} |
//Insert a number 'delimeter' between every two consecutive elements of input array `numbers'
// >>> intersperse([], 4)
// []
// >>> intersperse([1, 2, 3], 4)
// [1, 4, 2, 4, 3]
function intersperse(numbers, delimeter){
var result = [];
for(var i = 0; i < numbers.length; i++){
result.push(numbers[i]); | if(i !== numbers.length - 1){ | result.push(delimeter);
}
}
return result;
}
|
//"
// This function will take an array of integers. For all entries in the array, the function shall square the integer entry if its index is a
// multiple of 3 and will cube the integer entry if its index is a multiple of 4 and not a multiple of 3. The function will not
// change the entries in the array whose inde... | var sum = 0; | var len = lst.length;
for (var i = 0; i < len; i++){
if (i % 3 == 0){
sum += lst[i]*lst[i];
} else if (i % 4 == 0){
sum += lst[i]*lst[i]*lst[i];
} else {
sum += lst[i];
}
}
return sum;
} |
//Input to this function is a string containing multiple groups of nested parentheses. Your goal is to
// separate those group into separate strings and return the array of those.
// Separate groups are balanced (each open brace is properly closed) and not nested within each other
// Ignore any spaces in the input stri... | var group = ''; | var groups = [];
for (var i = 0; i < paren_string.length; i++){
if (paren_string[i] === '('){
count++;
group += paren_string[i];
} else if (paren_string[i] === ')'){
count--;
group += paren_string[i];
}
if (count === 0 && group){
... |
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 string representing a sentence,
// the sentence contains some words separated by a space,
// and you have to re... | isPrime = false; | for (int prime : primes) {
if (word.length() == prime) {
isPrime = true;
break;
}
}
if (isPrime) {
ans.append(word + " ");
}
}
if (ans.length() > 0) {
ans.d... |
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