Medium Accuracy: 45.48%
Submissions: 65809 Points: 4
You are given a number N. Find the total count of set bits for all numbers from 1 to N(both inclusive).
Example 1:
Input: N = 4
Output: 5
Explanation:
For numbers from 1 to 4.
For 1: 0 0 1 = 1 set bits
For 2: 0 1 0 = 1 set bits
For 3: 0 1 1 = 2 set bits
For 4: 1 0 0 = 1 set bits
Therefore, the total set bits is 5.
Example 2:
Input: N = 17
Output: 35
Explanation: From numbers 1 to 17(both inclusive),
the total number of set bits is 35.
Your Task: The task is to complete the function countSetBits() that takes n as a parameter and returns the count of all bits.
Expected Time Complexity: O(log N). Expected Auxiliary Space: O(1).
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Avoid using static/global variables in coding problems as your code is tested
against multiple test cases and these tend to retain their previous values.
Passing the Sample/Custom Test cases in coding problems does not guarantee the
correctness of code. On submission, your code is tested against multiple test cases
consisting of all possible corner cases and stress constraints.
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