How to use C# Stack Class
The Stack class represents a last-in-first-out (LIFO) Stack of Objects. Stack follows the push-pop operations. That is we can Push (insert) Items into Stack and Pop (retrieve) it back . Stack is implemented as a circular buffer. It follows the Last In First Out (LIFO) system. That is we can push the items into a stack and get it in reverse order. Stack returns the last item first. As elements are added to a Stack, the capacity is automatically increased as required through reallocation.
Commonly used methods :
Push : Add (Push) an item in the Stack data structure
Pop : Pop return the last Item from the Stack
Contains: Check the object contains in the Stack
Push : Add (Push) an item in the Stack data structure
Syntax : Stack.Push(Object)
Object : The item to be inserted.
Stack days = new Stack();
days.Push("Sunday");
Pop : Pop return the item last Item from the Stack
Syntax : Object Stack.Pop()
Object : Return the last object in the Stack
days.Pop();
Contains : Check the object contains in the Stack
Syntax : Stack.Contains(Object)
Object : The specified Object to be search
days.Contains("Tuesday");
The following CSharp Source code shows some of important functions in Stack Class:
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace WindowsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
Stack days = new Stack();
days.Push("SunDay");
days.Push("MonDay");
days.Push("TueDay");
days.Push("WedDay");
days.Push("ThuDay");
days.Push("FriDay");
days.Push("SaturDay");
if (days.Count ==7)
{
MessageBox.Show(days.Pop().ToString ());
}
else
{
MessageBox.Show("SaturDay does not exist");
}
}
}
} |
When you execute this C# program add seven items in the stack . Then it check the count is equal to 7 , if it is seven then pop() the item. The message box will display SaturDay.
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