LeetCode:Reverse Bits

题目描述：

Reverse bits of a given 32 bits unsigned integer.

For example, given input 43261596 (represented in binary as 00000010100101000001111010011100), return 964176192 (represented in binary as 00111001011110000010100101000000).

代码：

class Solution{public:uint32_t reverseBits(uint32_t n){int bits[32];for(int i = 31;i >= 0;i--){if(n & 1)bits[i] = 1;elsebits[i] = 0;n = n >> 1;}uint32_t result = 0;for(int i = 31;i >= 0;i--){result = result + bits[i];if(i == 0)break;result = result << 1;}return result;}};