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Leetcode-190 Reverse Bits

时间:2016-12-16 07:40:59      阅读:189      评论:0      收藏:0      [点我收藏+]

标签:class   int   log   div   reverse   blog   pre   present   return   

#190. Reverse Bits          

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).

题解:移位运算。

class Solution {
public:
    uint32_t reverseBits(uint32_t n) {
        int t=32;
        uint32_t num;
        while(t--)
        {
            if(n&1==1)
            {
                n=n>>1;
                num+=1<<t;
            }
            else
            {
                n=n>>1;
                num+=0<<t;
            }
        }
        return num;
    }
};

  

Leetcode-190 Reverse Bits

标签:class   int   log   div   reverse   blog   pre   present   return   

原文地址:http://www.cnblogs.com/fengxw/p/6185462.html

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