/*************************************************************************

# File Name: StackDemo.java

# Author:

# Mail:

# Created Time: 2016年11月12日 星期六 14时20分39秒

************************************************************************/

class Stack{

int stck[] = new int[10];

int tos;

//initialize top - of - stack;

Stack(){

tos = -1;

}

//push an item onto the stack

void push(int item){

if(tos == 9){

System.out.println("Stack is full.");

}

else

stck[++tos] = item;

}

//pop an item from the stack

int pop(){

if(tos < 0){

System.out.println("stack is empty.");

return 0;

}

else

return stck[tos--];

}

}

class StackDemo{

public static void main(String args[]){

Stack s1 = new Stack();

Stack s2 = new Stack();

for(int i = 0;i < 10;i++){

s1.push(i);

}

for(int i = 10;i < 20;i++){

s2.push(i);

}

System.out.println("stack in s1:");

for(int i = 0;i < 10;i++){

System.out.println(s1.pop());

}

System.out.println("stack in s2:");

for(int i = 0;i < 10;i ++){

System.out.println(s2.pop());

}

}

}