leetcode solution 190 Reverse Bits
z
 2018-02-28 19:35:16  

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).

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public class Solution {
    // you need treat n as an unsigned value
    public int reverseBits(int n) {
        int result = 0;
        for(int i=0; i<32; i++){
            result <<= 1;
            result += n&1;
            n >>= 1;
        }
        return result;
    }
}

alse

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