461. Hamming Distance

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The Hamming distance of two integers is the number of bit positions at which their binary forms differ. Return the Hamming distance of the non-negative integers x and y.

Example

x = 1, y = 4  ->  2   (001 vs 100)
x = 3, y = 1  ->  1   (11 vs 01)

Constraints

• 0 <= x, y <= 2^31 - 1