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ArrayStack.java
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119 lines (100 loc) · 2.43 KB
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/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package arraystack;
/**
*
* @author Lucifer
*/
public class ArrayStack {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
// TODO code application logic here
StackTest s=new StackTest();
System.out.println("Stack operation");
s.push(1);
s.push(2);
s.push(3);
s.display();
s.pop();
s.display();
QueueTest q=new QueueTest();
System.out.println("Queue operation");
q.push(1);
q.push(2);
q.push(3);
q.display();
q.pop();
q.display();
}
}
class StackTest{
int size = 10;
int[] arr = new int[size];
int top = -1;
public void push(int element) {
if (top < size - 1) {
top++;
arr[top] = element;
System.out.println("Item pushed");
} else {
System.out.println("Stack full");
}
}
public void pop() {
if (top >= 0) {
top--;
System.out.println("Item popped");
} else {
System.out.println("Stack Empty");
}
}
public void display() {
if (top >= 0) {
for (int i = 0; i <= top; i++) {
System.out.println(arr[i]);
}
} else {
System.out.println("No elements in Stack");
}
}
}
class QueueTest{
int size = 10;
int[] arr = new int[size];
int start = 0;
int end=-1;
int dynamicSize;
public void push(int element) {
if(end<size-1){
end++;
arr[end]=element;
System.out.println("Element inserted");
dynamicSize++;
}else{
System.out.println("Queue full");
}
}
public void pop() {
if (start >= 0) {
start++;
dynamicSize--;
System.out.println("Item popped");
} else {
System.out.println("Queue Empty");
}
}
public void display() {
if (dynamicSize >= 0) {
for (int i = start; i <= end; i++) {
System.out.println(arr[i]);
}
} else {
System.out.println("No elements in Stack");
}
}
}