Find the odd occurring element in log(n) time

Given an array of integers where every element appears even number of times except one element which appears odd number of times, find that odd occurring element in O(log(n)) time and constant space.

Right rotate an array k times

In this post, we will see how to right rotate an array by specified positions. For example, right rotating the array { 1, 2, 3, 4, 5, 6, 7 } three times will result in the array { 5, 6, 7, 1, 2, 3, 4 }.

Left rotate an array in C

In this post, we will see how to left rotate an array by specified positions. For example, left rotating the array { 1, 2, 3, 4, 5 } twice results in the array { 3, 4, 5, 1, 2 }.

Print all distinct Subsets of a given Set

Given a set S, generate all distinct subsets of it i.e., find distinct power set of set S. A power set of any set S is the set of all subsets of S, including the empty set and S itself.