【HackerRank】Maximizing XOR

 1 import java.io.*;
 2 import java.util.*;
 3 import java.text.*;
 4 import java.math.*;
 5 import java.util.regex.*;
 6 
 7 public class Solution {
 8 /*
 9  * Complete the function below.
10  */
11 
12     static int maxXor(int l, int r) {
13         int maxx = 0;
14         for(int i = l;i <= r;i++){
15             for(int j = l;j <= r;j++){
16                 if(i != j)
17                     maxx = Math.max(maxx,i^j);
18             }
19         }
20         return maxx;
21 
22     }
23 
24     public static void main(String[] args) {
25         Scanner in = new Scanner(System.in);
26         int res;
27         int _l;
28         _l = Integer.parseInt(in.nextLine());
29         
30         int _r;
31         _r = Integer.parseInt(in.nextLine());
32         
33         res = maxXor(_l, _r);
34         System.out.println(res);
35         
36     }
37 }