Flipping bits - Hacker Rank Solution

 You will be given a list of 32 bit unsigned integers. Flip all the bits ( and ) and print the result as an unsigned integer.

Maximum Xor - Hacker Rank Solution

 You are given an array  of  elements. A list of integers,  is given as an input, find the maximum value of  for all  , where  represents xor of two elements.

Friend Circle Queries - Hacker Rank Solution

 The population of HackerWorld is . Initially, none of the people are friends with each other. In order to start a friendship, two persons  and  have to shake hands, where . The friendship relation is transitive, that is if  and  shake hands with each other,  and friends of  become friends with  and friends of .

Time Complexity: Primality - Hacker Rank Solution

 A prime is a natural number greater than  that has no positive divisors other than  and itself. Given  integers, determine the primality of each integer and print whether it is Prime or Not prime on a new line.