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  1. import java.util.*;
  2.  
  3. public class Main {
  4.   public static void main(String[] args) {
  5.     List<Integer> arr = new ArrayList<>(Arrays.asList(3, 3, 2, 3));
  6.     int x = 0;
  7.     for (int i : arr) {
  8.       if (Collections.frequency(arr, i) == 1) {
  9.         x = i;
  10.         break;
  11.       }
  12.     }
  13.     System.out.println("The element with single occurrence is " + x);
  14.   }
  15. }
Success #stdin #stdout 0.11s 39876KB
comments (?)
stdin 
Standard input is empty
stdout 
The element with single occurrence is 2
https://ideone.com/sHmhym
language:
Java (HotSpot 12)
created:
2 years ago
visibility:
public

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