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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	public static void main (String[] args) throws java.lang.Exception
  11. 	{
  12. 		// your code goes here
  13.  
  14. 		int[] arr = new int[]{4, 2, 2, 6, 4};
  15. 		int target = 6;
  16. 		long result = subarrayXor(arr,target);
  17. 		System.out.println(result);
  18. 	}
  19.  
  20.     public static long subarrayXor(int arr[], int k) {
  21.         // code here
  22.         int currentXor = 0;
  23.  
  24.         Map<Integer,Integer> map = new HashMap<>();
  25.         map.put(0,1);
  26.         long count = 0;
  27.         for(int i =0;i<arr.length;i++){
  28.             currentXor ^= arr[i];    
  29.             if(map.containsKey(currentXor^k)){
  30.                 count+=map.get(currentXor^k);
  31.             }
  32.             map.put(currentXor,map.getOrDefault(currentXor,0)+1);
  33.         }
  34.  
  35.         return count;
  36.     }
  37.  
  38.  
  39. }
Success #stdin #stdout 0.06s 54548KB
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4
https://ideone.com/ULcAgD
language:
Java (HotSpot 12)
created:
3 days ago
visibility:
public

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