C#代码实现栈

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Zhan
{
    class StackX
    {
        /// 

        /// 栈的C#代码 Stack
        /// 
        /// 
        /// 
        private int maxSize;
        private long[] stackArray;
        private int top;
    //---------------------------------------------------------------
        public StackX(int s)                    //constructor
        {
            maxSize = s;                        //set array size
            stackArray = new long[maxSize];     //create array
            top = -1;                           //no items yet
        }
    //---------------------------------------------------------------
        public void push(long j)                //put item on top of stack
        {
            if (top == maxSize - 1)
            {
                Console.WriteLine(j + " Can't insert: Stack is full");
            }
            else
            {
                stackArray[++top] = j;
            }
        }
    //---------------------------------------------------------------
        public long pop()                       //take item from top of stack
        {
            if (top == -1)
            {
                Console.WriteLine("Can't pop: Stack is empty");
                return Convert.ToUInt32(0);
            }
            else
            {
                return stackArray[top--];
            }
        }
    //---------------------------------------------------------------   
        public long Peek()                      //peek at top of stack
        {

            return stackArray[top];
            /*
            for (int i = 0; i <= top; i++)
            {
                Console.Write(stackArray[i] + " ");
            }
             */ 
        }
    //--------------------------------------------------------------- 
        public bool isEmpty()                   //true if stack is empty
        {
            return (top == -1);
        }
    //--------------------------------------------------------------- 
        public bool isFull()                    //true if stack is full
        {
            return (top == maxSize - 1);
        }
    //--------------------------------------------------------------- 
        static void Main(string[] args)
        {
            StackX theStack = new StackX(10);   //make new stack

            theStack.push(20);                  //push items onto stack
            theStack.push(40);        
            theStack.push(60);
            theStack.push(80);

            //Console.Write(theStack.Peek()+"\n");
            while (!theStack.isEmpty())         //until it's empty
            {
                long value = theStack.pop();    //delete item from stack
                Console.Write(value);           //display it
                Console.Write("   ");
            }

            Console.ReadLine();
        }
    }
}

Result: