实现代码原理如下：
1、继承一个CollectionBase抽象类,该类又继承IList, ICollection, IEnumerable接口。而该抽象类提供一套的抽象方法并且提供数据结构InnerList(ArrayList)来定制自己的集合类。后续文章会介绍一下ArrayList这个数据结构。
2、实现代码如下：
using System;
using System.Collections.Generic;
using System.Collections;
using System.Text;
namespace DataStructureConsoleApplication
{
class CollectionProgram:CollectionBase
{
//implementing the Add Method using the ArrayList
public void Add(object item)
{
InnerList.Add(item);
}
//implementing the Remove Method using the ArrayList
public void Remove(object item)
{
InnerList.Remove(item);
}
//implementing the Insert Method using the ArrayList
public void Insert(int index,object item)
{
InnerList.Insert(index, item);
}
//implementing the Contains Method using the ArrayList
public bool Contains(object item)
{
return InnerList.Contains(item);
}
//implementing the IndexOf Method using the ArrayList
public int IndexOf(object item)
{
return InnerList.IndexOf(item);
}
//implementing the RemoveAt Method using the ArrayList
public void RemoveAt(int index)
{
InnerList.RemoveAt(index);
}
//hide the method
public new void Clear()
{
InnerList.Clear();
}
//hide the property
public new int count
{
get
{
return InnerList.Count;
}
}
}
class CollectionProgram1
{
static void Main(string[] args)
{
CollectionProgram cps = new CollectionProgram();
cps.Add("goal");
cps.Add("bell");
cps.Add("love");
cps.Add("city");
cps.Add("Zhaoqing");
foreach (object cp in cps)
{
Console.WriteLine(cp);
}
Console.WriteLine("Number of cps:"+cps.count);
cps.Remove("city");
Console.WriteLine("Number of cps:" + cps.count);
cps.Insert(3,"city");
Console.WriteLine("Number of cps:" + cps.count);
Console.WriteLine("Index of Number:" + cps.IndexOf("love"));
cps.RemoveAt(2);
Console.WriteLine("Index of Number:" + cps.IndexOf("love"));
Console.WriteLine("Number of cps:" + cps.count);
if (cps.Contains("Zhaoqing"))
{
Console.WriteLine("Right!");
}
else
{
Console.WriteLine("Wrong!");
}
cps.Clear();
Console.WriteLine("Number of cps:" + cps.count);
}
}
}
运行结果：
goal
bell
love
city
Zhaoqing
Number of cps:5
Number of cps:4
Number of cps:5
Number of cps:2
Number of cps:-1
Number of cps:4
Right!
Number of cps:0
希望大家来拍砖哦！：）
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