Given an array of integers A, every element appears twice except for one. Find that single one. NOTE: Your algorithm should have a linear

Given an integer array A of size N. You need to find the value obtained by XOR-ing the contiguous subarrays, followed by XOR-ing the values

Given an integer A find the Ath number whose binary representation is a palindrome. NOTE: Consider the 1st number whose binary representat

Given an integer array A of N integers, find the pair of integers in the array which have minimum XOR value. Report the minimum XOR value.

We define f(X, Y) as number of different corresponding bits in binary representation of X and Y. For example, f(2, 7) = 2,

Divide two integers without using multiplication, division and mod operator. Return the floor of the result of the division.

Given a string A representing JSON object. Return an array of the string denoting JSON object with proper indentation. Rules for proper inde

Given a string A consisting only of lowercase characters, we need to check whether it is possible to make this string a palindrome after rem

Given a string A. The only operation allowed is to insert characters at the beginning of the string. Find how many minimum characters are ne

You are given an array A consisting of strings made up of the letters ‘a’ and ‘b’ only. Each string goes through a number of operations, whe