Please show a detailed solution Thank you Consider the follo

Please show a detailed solution. Thank you!

Consider the following class: public class MergeSequence public class MergeSequence {private ArrayList values; public MergeSequence () {values = new ArrayList();} public void add(int n) {values.add(n);} public String toString() {return values.toString();}} Add a method public MergeSequence append (MergeSequence other) that creates a new sequence, appending this and the other sequence, without modifying either sequence. For example, if sequence is: 14 9 16 and b is the sequence 9 7 4 9 11 then the call a.append(b) returns the sequence 1 4 9 16 9 7 4 9 11 without modifying a or b. Use JUnit testing framework to verify the functionality of your MergeSequence Class.

Solution

Hi, Please find my implementation.

Please let me know in case of any issue.

import java.util.ArrayList;

public class MergeSequence {

   private ArrayList<Integer> values;

   public MergeSequence(){

       values = new ArrayList<>();

   }

   public void add(int n){

       values.add(n);

   }

   public String toString(){

       return values.toString();

   }

   //1

   public MergeSequence append(MergeSequence other){

       MergeSequence result = new MergeSequence();

       // adding current object values

       for(Integer x : this.values){

           result.add(x);

       }

       // adding other values

       for(Integer x : other.values){

           result.add(x);

       }

       // returning result

       return result;

   }

   public static void main(String[] args) {

      

       // creating MergeSequence Object and adding some int value in it

       MergeSequence mg1 = new MergeSequence();

       mg1.add(1);

       mg1.add(4);

       mg1.add(9);

       mg1.add(16);

      

       // creating other MergeSequence Object and adding some int value in it

       MergeSequence mg2 = new MergeSequence();

       mg2.add(9);

       mg2.add(7);

       mg2.add(4);

       mg2.add(9);

       mg2.add(11);

      

       // getting final MergeSequence Object

       MergeSequence result = mg1.append(mg2);

      

       System.out.println(result.toString());

   }

}

/*

Sample run:

[1, 4, 9, 16, 9, 7, 4, 9, 11]

*/