What is the output after the following Java program is executed? Assume the clas

Question

What is the output after the following Java program is executed?

Assume the class Lab10_Ex1 defines the missing methods to print.

//Client for user-defined classes

//LinkedStackClass and QueueClass

//Methods (missing here): printStack, printQueue
import java.util.*;
public class Lab10_Ex1 {
    static Scanner input = new Scanner(System.in);
    public static void main(String[] args) {
        LinkedStackClass<Character> s = new LinkedStackClass<Character>();
        QueueClass<Character> q = new QueueClass<Character>(10);
        Character ch;
        for(ch = 'A'; ch <= 'H'; ch++)
            s.push(ch);
        System.out.println("Initial stack is: ");
        printStack(s);
        for(int i = 1; i <= 4; i++) {
            s.pop();
            q.enqueue(s.peek());
            s.pop();
            q.enqueue(s.peek());
            s.push(q.front());
            q.dequeue( );
        }
        System.out.println(" Final stack is: ");
        printStack(s);
        System.out.println(" The queue is: ");
        printQueue(q);
    }
    //method definition for printStack

    //method definition for printQueue

}

Explanation / Answer

Initial Stack is: H G F E D C B A.

Final Stack is: E C B A.

The queue is: E D D C.

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