Count the number of set bits(1's) in an Integer in binary representation | Leetcode | Java

We will find out how we can find the number of set bits in any decimal number .
Time complexity: O(n).
two approaches discussed:
1. using % operator
2. using bitwise & (faster than %).

#interview question #leetcode #java #binary representation #easy #data structures #algorithms
#competitive programming #decimal number #fastest method #time complexity