Question

Java

Write a method that uses an ArrayList and its contains method to take an input array of strings return a new array, free of any duplicate strings.

Answer 1

import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
public class ArrayStrings {
   public static void main(String[] args) {
      List<String> alist1 = new ArrayList<String>();
      alist1.add("sneha");
      alist1.add("shweta");
      alist1.add("Marry");
      alist1.add("sneha");
      alist1.add("Marry");
      System.out.println("The ArrayList items are:" );
      for (String i : alist1)
      System.out.println(i);
      HashSet<String> h = new HashSet<String>(alist1);
      List<String> alist2 = new ArrayList<String>(h);
      System.out.println("\nThe new arraylist items after removing duplicates are:" );
      for (String i : alist2)
      System.out.println(i);
   }
}