Kata

Complete the function to determine the number of bits required to convert integer A to integer B (where A and B >= 0)

The upper limit for A and B is 2¹⁶, int.MaxValue or similar.

For example, you can change 31 to 14 by flipping the 4^th and 0^th bit:

 31  0 0 0 1 1 1 1 1
 14  0 0 0 0 1 1 1 0
---  ---------------
bit  7 6 5 4 3 2 1 0

Thus 31 and 14 should return 2.