Find first set bit
Easy Accuracy: 52.49% Submissions: 28427 Points: 2

Given an integer an N. The task is to return the position of first set bit found from the right side in the binary representation of the number.
Note: If there is no set bit in the integer N, then return 0 from the function.  

Example 1:

Input: N = 18
Output: 2
Explanation: Binary representation of 
18 is 010010,the first set bit from the 
right side is at position 2.

Example 2:

Input: N = 12 
Output: 3 
Explanation: Binary representation 
of  12 is 1100, the first set bit 
from the right side is at position 3.

Your Task:
The task is to complete the function getFirstSetBit() that takes an integer n as a parameter and returns the position of first set bit.

Expected Time Complexity: O(log N).
Expected Auxiliary Space: O(1).

0 <= N <= 108

to report an issue on this page.


We strongly recommend solving this problem on your own before viewing its editorial. Do you still want to view the editorial?


All Submissions

My Submissions:

Login to access your submissions.

Find first set bit

Output Window