小米oj第30题 反向位整数

    import java.util.*;

    public class Main {
        public static void main(String args[]) {
        Scanner scan = new Scanner(System.in);
        String line;
        while (scan.hasNextLine()) {
            line = scan.nextLine().trim();
            // please write your code here
//            Solution solu= new Solution();
//            System.out.println(solu.numDecodings(line));
            long a = Long.valueOf(line);
            boolean[] bytes = new boolean[32];
            int i = 0;
            for (i =0;i<32;i++) {
                if (a%2==1) {
                    bytes[i]=true;
                }
                else {
                    bytes[i]=false;
                }
                a=a/2;
            }
            a =0;
            for (i =0;i<32;i++){
                if (bytes[i]==true){
                    a+=1*Math.pow(2,31-i);
                }
            }
            System.out.println(a);
        }

    }
    }