leetcode_Reverse Bits_easy

标签：leetcode   c++   bit manipulation   

Reverse bits of a given 32 bits unsigned integer.

For example, given input 43261596 (represented in binary as 00000010100101000001111010011100), return 964176192 (represented in binary as00111001011110000010100101000000).

方法：直接进行位操作，从末尾开始，一个一个移入return的变量里边，每次对return的变量进行左移位操作。

class Solution {
public:
    uint32_t reverseBits(uint32_t n) {
        uint32_t res=0;
        int i=0;
        while(i++<32)
        {
            res=res<<1;
            res+=n%2;
            if(n>0)
                n=n>>1;
        }
        return res;
    }
};

leetcode_Reverse Bits_easy

标签：leetcode   c++   bit manipulation   

原文地址：http://blog.csdn.net/u013861066/article/details/46334489