Stack
In this chapter you will learn:
Generic Stack and non-generic Stack
Stack<T> and Stack are last-in first-out (LIFO)
data structures, providing methods to Push and Pop.
The generic Stack has the following methods:
public class Stack<T> : IEnumerable<T>, ICollection, IEnumerable
{//j a v a 2 s .com
public Stack();
public Stack (IEnumerable<T> collection); // Copies existing elements
public Stack (int capacity); // Lessens auto-resizing
public void Clear();
public bool Contains (T item);
public void CopyTo (T[] array, int arrayIndex);
public int Count { get; }
public Enumerator<T> GetEnumerator(); // To support foreach
public T Peek();
public T Pop();
public void Push (T item);
public T[] ToArray();
public void TrimExcess();
}
The following example demonstrates Stack<int>.
using System;//from j ava2 s .c o m
using System.Collections;
using System.Collections.Generic;
using System.Linq;
class Sample
{
public static void Main()
{
var s = new Stack<int>();
s.Push(1); // Stack = 1
s.Push(2); // Stack = 1,2
s.Push(3); // Stack = 1,2,3
Console.WriteLine(s.Count);
Console.WriteLine(s.Peek());
Console.WriteLine(s.Pop());
Console.WriteLine(s.Pop());
Console.WriteLine(s.Pop());
Console.WriteLine (s.Pop());
}
}
The output:
Next chapter...
What you will learn in the next chapter:
Home » C# Tutorial » Collections