Array List Merge Retain Only Duplicates - Java Algorithm

Java examples for Algorithm:Array

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Description

Array List Merge Retain Only Duplicates

Demo Code


import java.util.Set;
import java.util.TreeSet;

public class Main {

  public static void main(String args[]) {
    int[] a1 = { 1, 3, 8, 54, 2, 65, 7 };
    int[] a2 = { 3, 7, 1, 5, 8, 90 };

    Set<Integer> set1 = new TreeSet<Integer>();

    for (int i = 0; i < a1.length; i++) {
      for (int j = 0; j < a2.length; j++) {
        if (a1[i] == a2[j])
          set1.add(a1[i]);//from  w  w w  .  j  ava2  s.  c  o m
      }

    }
    System.out.println(set1);
    Integer[] arr = set1.toArray(new Integer[set1.size()]);
    System.out.println(arr);

  }
}

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