Code:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
stack st = new stack();
while (true)
{
Console.Clear();
Console.WriteLine("\nStack MENU(size -- 10)");
Console.WriteLine("1. Add an element");
Console.WriteLine("2. See the Top element.");
Console.WriteLine("3. Remove top element.");
Console.WriteLine("4. Display stack elements.");
Console.WriteLine("5. Exit");
Console.Write("Select your choice: ");
int choice = Convert.ToInt32(Console.ReadLine());
switch (choice)
{
case 1:
Console.WriteLine("Enter an Element : ");
st.Push(Console.ReadLine());
break;
case 2: Console.WriteLine("Top element is: {0}", st.Peek());
break;
case 3: Console.WriteLine("Element removed: {0}", st.Pop());
break;
case 4: st.Display();
break;
case 5: System.Environment.Exit(1);
break;
}
Console.ReadKey();
}
}
}
interface StackADT
{
Boolean isEmpty();
void Push(Object element);
Object Pop();
Object Peek();
void Display();
}
class stack : StackADT
{
private int StackSize;
public int StackSizeSet
{
get { return StackSize; }
set { StackSize = value; }
}
public int top;
Object[] item;
public stack()
{
StackSizeSet = 10;
item = new Object[StackSizeSet];
top = -1;
}
public stack(int capacity)
{
StackSizeSet = capacity;
item = new Object[StackSizeSet];
top = -1;
}
public bool isEmpty()
{
if (top == -1) return true;
return false;
}
public void Push(object element)
{
if (top == (StackSize - 1))
{
Console.WriteLine("Stack is full!");
}
else
{
item[++top] = element;
Console.WriteLine("Item pushed successfully!");
}
}
public object Pop()
{
if (isEmpty())
{
Console.WriteLine("Stack is empty!");
return "No elements";
}
else
{
return item[top--];
}
}
public object Peek()
{
if (isEmpty())
{
Console.WriteLine("Stack is empty!");
return "No elements";
}
else
{
return item[top];
}
}
public void Display()
{
for (int i = top; i > -1; i--)
{
Console.WriteLine("Item {0}: {1}", (i + 1), item[i]);
}
}
}
}
Output:
Stack MENU(size -- 10)
1. Add an element
2. See the Top Element
3. Remove the Top Element
4. Display Stack Elements
5. Exit
Select your Choice : 1
Enter the Element : 25
Item Pushed Successfully!
Select your choice :1
Enter the Element : 26
Item Pushed Successfully!
Select your choice : 4
Item 2 :26
Item 1 :25
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