fork download
copy 
  1. import java.util.*;
  2. public class Main {
  3.     public static void main(String[] args) {
  4.         int arr[] ={4, 2, 2, 6, 4};
  5.         int k = 6;
  6.         int count =0;
  7.         HashMap<Integer,Integer> map = new HashMap<>();
  8.         map.put(0,1);
  9.         int cxor = 0;
  10.         for(int i : arr){
  11.             cxor ^= i;
  12.             int req = cxor ^k;
  13.             count += map.getOrDefault(req,0);
  14.             map.put(cxor,map.getOrDefault(cxor,0)+1);
  15.         }
  16.         System.out.println(count);
  17.  
  18.     }
  19. }
Success #stdin #stdout 0.11s 54732KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
4
https://ideone.com/4n5vTk
language:
Java (HotSpot 12)
created:
1 day ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!