The challenge Given an array of integers your solution should find the smallest integer. For example: Given [34, 15, 88, 2] your solution will return 2 Given [34, -345,… Read More »How to Find the Smallest Integer in the Array in Golang
The challenge The most basic encryption method is to map a char to another char by a certain math rule. Because every char has an… Read More »How to do Basic Encryption in Java
The challenge You are given an array of arrays and your task will be to return the number of unique arrays that can be formed… Read More »Forming Unique Array Combinations in Golang
The challenge Write a function that checks if a given string (case insensitive) is a palindrome. The solution in Python Option 1: Option 2: Option 3:… Read More »How to Check if String is a Palindrome in Python
The challenge Complete the function that takes an odd integer (0 < n < 1000000) which is the difference between two consecutive perfect squares, and… Read More »How to Find the Squares in Java
The challenge When given a string of space-separated words, return the word with the longest length. If there are multiple words with the longest length,… Read More »How to Get Longest Word in Sentence in Java
The challenge Implement a function that calculates the sum of the integers inside a string. For example, in the string “The30quick20brown10f0x1203jumps914ov3r1349the102l4zy dog”, the sum of the… Read More »How to Sum all the Integers in a String in Golang
The challenge Complete the solution so that it reverses the string passed into it. The solution in Golang Option 1: Option 2: Option 3: Test… Read More »How to Reverse a String in Golang
The challenge You must implement a function that returns the difference between the biggest and the smallest value in a list(lst) received as a parameter.… Read More »Maximum Different of Int-Array in Java
The challenge Given a string and an array of integers representing indices, capitalize all letters at the given indices. Example: capitalize(“abcdef”,[1,2,5]) = “aBCdeF” capitalize(“abcdef”,[1,2,5,100]) =… Read More »Indexed Capitalization in Java
The challenge Modify the spacify function so that it returns the given string with spaces inserted between each character. The solution in Java code Option… Read More »How to Spacify a String in Java
The challenge For a given list [x1, x2, x3, …, xn] compute the last (decimal) digit of x1 ^ (x2 ^ (x3 ^ (… ^ xn))). Example: because 3… Read More »How to Find the Last Digit of a Huge Number in Golang
The challenge You are given two arrays a1 and a2 of strings. Each string is composed of letters from a to z. Let x be any string in the first array and y be any string… Read More »Find the Maximum Length Difference between Lists/Arrays in Python
The challenge An array is circularly sorted if the elements are sorted in ascending order but displaced, or rotated, by any number of steps. Complete the function/method… Read More »How to Circularly Sort an Array in Golang
The challenge You are be given a string that has lowercase letters and numbers. Your task is to compare the number groupings and return the… Read More »Largest Number Groupings in String in Python
The challenge Write a function toWeirdCase (weirdcase in Ruby) that accepts a string, and returns the same string with all even indexed characters in each word uppercased, and… Read More »How to Alternate String Casing in Golang
The challenge Finish the solution so that it sorts the passed-in array/list of numbers. If the function passes in an empty array/list or null/None value… Read More »How to Sort a List of Numbers in Python
The challenge Write a simple regex to validate a username. Allowed characters are: lowercase letters, numbers, underscore Length should be between 4 and 16 characters… Read More »How to Validate Usernames with Regex in Java
The challenge Given two arrays of strings a1 and a2 return a sorted array r in lexicographical order of the strings of a1 which are substrings of strings of a2. Example 1: a1 =… Read More »Sort Lexicographical Order of Substrings in Java
The challenge Your task is to add up letters to one letter. The function will be given an array of single-character Strings, each one being… Read More »How to Perform Alphabetical Addition in Java
The challenge Create a function that takes a Roman numeral as its argument and returns its value as a numeric decimal integer. You don’t need… Read More »Roman Numerals Decoder in Golang
The challenge Clock shows h hours, m minutes and s seconds after midnight. Your task is to write a function that returns the time since midnight in milliseconds. Example: Input constraints:… Read More »How to Subtract from Time in Golang
The challenge You want to create secret messages which must be deciphered. Here are the conditions: Your message is a string containing space separated words.… Read More »How to Encrypt Words in Java
The challenge Write a function that takes an integer as input, and returns the number of bits that are equal to one in the binary… Read More »Bit Counting in Golang
The challenge Find the next higher number (int) with same ‘1’- Bits. I.e. as much 1 bits as before and output next higher than input. Input is… Read More »How to Find Next Higher Number with Same Bits in Golang