Given an array t[100] which contains numbers between 1..99. Return the duplicated value

Given an array t[100] which contains numbers between 1..99. Return the
duplicated value

 

 

 

 

 

 

 

 

 

 

 

 

 

import java.util.HashSet;
import java.util.Set;

public class Duplicate {

 public static void main(String args[]) {
  Integer[] t = new Integer[100];
  for (int i = 0; i < 100; i++) {
   t[i] = (int) (Math.random() * 100);
  }

  Set<Integer> set = new HashSet<Integer>();

  for (int i = 0; i < 100; i++) {
   for (int j = 0; j < 100; j++) {
    if (t[i] == t[j]) {
     set.add(t[i]);
    }
   }
  }

 
  for (Integer i : set) {
   System.out.print(" " + i);
  }

 }

}