[Ch6] Original version of code magnets

package ch6;

import java.util.ArrayList;

public class ArrayListMagnet {

  public static void main(String[] args) {

    ArrayList<String> a = new ArrayList<String>();

    a.add(0,"zero");

    a.add(1,"one");

    a.add(2,"two");

    a.add(3,"three");

    printAL(a);

    if (a.contains("three")) {

      a.add("four");

    }

    a.remove(2);

    printAL(a);

    if (a.indexOf("four") != 4) {

      a.add(4, "4.2");

    }

    printAL(a);

    if (a.contains("two")) {

      a.add("2.2");

    }

    printAL(a);

  }

  public static void printAL(ArrayList<String> al) {

    for (String element : al) {

      System.out.print(element + "  ");

    }

    System.out.println(" ");

  }

}