ArrayList

import java.util.ArrayList;
import java.util.Iterator;
import java.util.Scanner;


public class ArrayList1 {

    public static void main(String[] args) {
        ArrayList<Integer>number = new ArrayList<Integer>(5);

        //User Input :
         int n;
         Scanner input = new Scanner(System.in);
         n = input.nextInt();

         //Array List Input :
         for(int i=0; i<n; i++){

             int a;
             a = input.nextInt();
             number.add(a);

         }

         //Use Iterator For Output :
         Iterator it = number.iterator();

         while(it.hasNext()){
             System.out.println(it.next());
         }

         //Check Number Is Contain or Not :
         boolean c = number.contains(3);
         System.out.println(c);

         //Finding Index of Passing Number :
         int pos = number.indexOf(3);
         System.out.println(pos);

         //Get Number of Passing Index :
         int x = number.get(0);
         System.out.println(x);

         //Replacing (Index , New_Number)
         number.set(3 , 50);


         //Romoving (Index) :
         number.remove(2);
         System.out.println("Afetr removing");
         Iterator itt = number.iterator();
         while(itt.hasNext()){
             System.out.println(itt.next());
         }

         //Array All Delete :
         number.clear();
         System.out.println("Afetr All elements removing");
             System.out.println(number.size());

             //Checking Array is Empty or Not :
             boolean b = number.isEmpty();
             System.out.println(b);



       ArrayList<Integer>number1 = new ArrayList<Integer>(5);
        ArrayList <Integer>number2 = new ArrayList<Integer>(5);
        ArrayList<Integer>number3 = new ArrayList<Integer>(5);

        for(int i=0; i<5; i++){
            int a;
            a = input.nextInt();
            number1.add(a);
        }

        for(int i=0; i<5; i++){
            int a;
            a = input.nextInt();
            number2.add(a);
        }

        //Copy An Array List :
        number3.addAll(number1);
        System.out.println(number3);

        //Chek Array List Are Same or Not :
        boolean b = number2.equals(number3);
        System.out.println(b);


        //Sorting In ascending Order:
        Collections.sort(number1);
        System.out.println("After Sorting"+number1);


        //Sorting in Descending Order :
        Collections.sort(number2, Collections.reverseOrder());
        System.out.println("After Sorting In Reverse Order"+number2);

    }
}