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reverseBits.cpp
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reverseBits.cpp
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// Source : https://leetcode.com/problems/reverse-bits/
// Author : Hao Chen
// Date : 2015-03-30
/**********************************************************************************
*
* 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).
*
* Follow up:
* If this function is called many times, how would you optimize it?
*
* Related problem: Reverse Integer
*
* Credits:Special thanks to @ts for adding this problem and creating all test cases.
*
**********************************************************************************/
class Solution {
public:
uint32_t reverseBits(uint32_t n) {
uint32_t ret=0;
for(int i=0; i<32; i++) {
ret = (ret*2) + (n & 0x1);
n /=2 ;
}
return ret;
}
};