190. Reverse Bits
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Description: 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).
解题思路
本题可以取出n的最后一位做和res做或运算，总共做32次即可
Java-Solution:
public class Solution { // you need treat n as an unsigned value public int reverseBits(int n) { int res = 0; for(int i = 0; i < 32; i++, n >>= 1){ res = res << 1 | (n & 1); } return res; }} 0 0
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