# Solution Review: Check If a Given Number is Even/Odd

This is a solution to another Bitwise question. Think of the rightmost bit of a number and think of some logic that could solve this. We solve using AND operator with O(1) time Complexity.

This is a solution to another Bitwise question. Think of the rightmost bit of a number and think of some logic that could solve this. We solve using AND operator with O(1) time Complexity.

This lesson will teach you how to find the duplicate element using a hashing algorithm.