AC_one_line_n.java

/*
*  Author:      illuz <iilluzen[at]gmail.com>
*  File:        AC_one_line_n.java
*  Create Date: 2015-03-16 10:51:39
*  Descripton:   
*/

public class Solution {
    // you need treat n as an unsigned value
    public int reverseBits(int n) {
        return Integer.reverse(n);
    }
}