Reverse the bits of a given 32-bit unsigned integer.

• An integer n (32-bit unsigned).

• An integer — the result of reversing the bits.

• Input is a 32-bit unsigned integer.

Input: n = 43261596 (binary: 00000010100101000001111010011100)
Output: 964176192 (binary: 00111001011110000010100101000000)