[leetcode]190. Reverse Bits

题目链接:https://leetcode.com/problems/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).

Follow up: If this function is called many times, how would you optimize it?

class Solution{ public: uint32_t reverseBits(uint32_t n) { uint32_t result=0; for(uint32_t i=0;i<32;i++) { result=(result<<1)|((n>>i)&1); } return result; } };