ARRAY IMPLEMENTATION OF STACK

PROGRAM:

import java.io.*;

import java.lang.*;

class data

{

int i,x;

int a[]=new,int[10];

int top=-1;

void push() throws IOException

{

DataInput Stream in = new DataInputStream(System.in);

System.out.println("enter the elements");

x=Integer.parseInt(in,readLine());

if(top>=5)

{

System.out.println("overflow");

}

else

{a[++top]=x;

}

}

void pop()throws Exception

{

if(top<0)

{

System.out.println("Underflow");

}

else

{

for(i=1;i,=top;i++)

{

top=top-1;

}

}

void display()throws IOExcetion

{

for (i=0;i<=top;i++)

{

System.out.println("the elements ;"+a[i]);

}

}

}

class stack

{

public static void main(string args[])throws IOException

{

Data d=new Data();

DatainputStream in=new DataInputStream(System.in);

int i,x,c;

int top=-1;

int a[]=new int[10];

do

{

System.out.println("enter the choice");

c=Integer.parseInt(in.readline());

switch(c)

{

case 1:

d.push();

break;

case 2:

d.pop();

case 3:

d.display();

break;

}

}

while(c<=3)

}

OUTPUT:

enter your choice:1

enter the elements:10

enter your choice:2

enter the elements:20

enter your choice:1

enter the elements:30

enter your choice:3

elements:

10

20

30

enter your choice:2

30

enter your choice:3

10

20