You are given two numbers A and B. The task is to count the number of bits needed to be flipped to convert A to B.
Example 1:
Input: A = 10, B = 20
Output: 4
Explanation:
A = 01010
B = 10100
As we can see, the bits of A that need
to be flipped are 01010. If we flip
these bits, we get 10100, which is B.
Example 2:
Input: A = 20, B = 25
Output: 3
Explanation:
A = 10100
B = 11001
As we can see, the bits of A that need
to be flipped are 10100. If we flip
these bits, we get 11001, which is B.
Your Task: The task is to complete the function countBitsFlip() that takes A and B as parameters and returns the count of the number of bits to be flipped to convert A to B.
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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