JAVA Using an array of 10 elements String or int Implement b

JAVA

Using an array of 10 elements (String or int) Implement both a Stack and a Queue Submit a separate Driver for each Be sure all operations are functioning properly Example Can\'t \"peek\" at an empty stack or queue (should return null, zero, or let user know the stack/queue is empty) Can\'t push/add when the stack/queue is full (this would result in a stack overflow) Can\'t pop/poll when the stack/queue is empty

Solution

ANS:

Stack program:

import java.util.Scanner;
public class StackDemo
{
   int[] stack=new int[10];
   int top=-1;
   void push(int ele)
   {
       if(top==stack.length-1)
       {
           System.out.println(\"Stack is OverFlow\");
       }
       else
       {
           top++;
           stack[top]=ele;
       }
   }
   void pop(){
   if(top==-1)
       {
       System.out.println(\"UnderFlow(Stack is empty\");
       }
       else
       {
           int k;
           k=stack[top];
           top--;
           System.out.println(\"Deleted element is \"+k);
       }
   }
   void peek(){
   if(top==-1)
       {
       System.out.println(\"Stack is empty\");
       }
else
       {
       System.out.println(\"Top Most Element=\"+stack[top]);
       }
   }
   void display(){
       if(top==-1){
       System.out.println(\"underflow\");
   }
       else
       {
           for(int i=0;i<=top;i++)
               System.out.print(stack[i]+\" \");
           System.out.println();//empty line at the end
       }
   }
public static void main(String args[])
   {
   int ch,ele;
   Scanner sc=new Scanner(System.in);
StackDemo p=new StackDemo();
   while(true){
   System.out.println(\"Enter 1 for push,2 for pop,3 for peek, 4 for display,5 for exit\");
ch=sc.nextInt();
   switch(ch)
       {
       case 1:System.out.println(\"Ente element\");ele=sc.nextInt();p.push(ele);break;
       case 2:p.pop();break;
       case 3:p.peek();break;
       case 4:p.display();break;
       case 5:System.exit(0);
       }
   }
   }
}

Queue program:

import java.util.Scanner;
public class QueueDemo
{
   int[] q=new int[10];
   int front=-1,rear=-1;
   void add(int ele)
   {
       if(rear==q.length-1)
       {
           System.out.println(\"Queue is full\");
       }
       else
       {
           rear++;
           q[rear]=ele;
           if(front == -1)
               front++;
       }
   }
   void poll(){
   if(front==-1)
       {
       System.out.println(\"Queue is empty\");
       }
       else
       {
           int k;
           k=q[front];
           if(front==rear)
               front=rear=-1;
           else
           front++;
           System.out.println(\"Deleted element is \"+k);
       }
   }
   void peek(){
   if(front==-1)
       {
       System.out.println(\"Queue is empty\");
       }
else
       {
       System.out.println(\"Top Most Element=\"+q[front]);
       }
   }
   void display(){
       if(front==-1){
       System.out.println(\"Queue is empty\");
   }
       else
       {
           for(int i=front;i<=rear;i++)
               System.out.print(q[i]+\" \");
           System.out.println();//empty line at the end
       }
   }
public static void main(String args[])
   {
   int ch,ele;
   Scanner sc=new Scanner(System.in);
QueueDemo p=new QueueDemo();
   while(true){
   System.out.println(\"Enter 1 for add,2 for poll,3 for peek, 4 for display,5 for exit\");
ch=sc.nextInt();
   switch(ch)
       {
       case 1:System.out.println(\"Ente element\");ele=sc.nextInt();p.add(ele);break;
       case 2:p.poll();break;
       case 3:p.peek();break;
       case 4:p.display();break;
       case 5:System.exit(0);
       }
   }
   }
}

JAVA Using an array of 10 elements (String or int) Implement both a Stack and a Queue Submit a separate Driver for each Be sure all operations are functioning p
JAVA Using an array of 10 elements (String or int) Implement both a Stack and a Queue Submit a separate Driver for each Be sure all operations are functioning p
JAVA Using an array of 10 elements (String or int) Implement both a Stack and a Queue Submit a separate Driver for each Be sure all operations are functioning p

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