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  1. import java.util.*;
  2. class Main {
  3.     public static void main(String[] args) {
  4.         Scanner sc = new Scanner(System.in);
  5.         int tc = sc.nextInt();
  6.         while(tc-->0){
  7.         int n = sc.nextInt();
  8.         int[] v = new int[n];
  9.         for(int i=0;i<n;i++){
  10.             v[i] = sc.nextInt();
  11.             }
  12.         Arrays.sort(v);
  13.         int x=v[0];
  14.         int c=1;
  15.         for(int i=0;i<n-1;i++){
  16.  
  17.             if(v[i]==v[i+1]){
  18.                 c++;
  19.             }
  20.             else{
  21.                 if(c%2!=0){
  22.                     System.out.println(x);
  23.                 }
  24.                 if(i+1==n-1){
  25.                     System.out.println(v[i+1]);
  26.                 }
  27.                 x=v[i+1];
  28.                 c=1;
  29.             }
  30.         }
  31.     }
  32.  
  33.     }
  34.  
  35. }
Success #stdin #stdout 0.13s 35292KB
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https://ideone.com/WSHwDu
language:
Java (HotSpot 12)
created:
1 year ago
visibility:
public

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