下面介绍C#的集合类

1ArrayList

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

using System.Collections;

namespace 动态数组ArrayList
{
    class Program
    {
        static void Main(string[] args)
        {
            ArrayList a1 = new ArrayList();
            a1.Add(100);
            foreach (int number in new int[6] { 9, 3, 7, 2, 4, 8 })
            {
                a1.Add(number);
            }
            int[] number2 = new int[2] { 11, 12 };
            a1.AddRange(number2);
            a1.Remove(3);
            a1.RemoveAt(3);
            ArrayList al2 = new ArrayList(a1.GetRange(1,3));
            Console.WriteLine("遍历方法1:");
            foreach (int i in a1)
            {
                Console.WriteLine(i);
            }
            Console.WriteLine("遍历方法2:");
            for (int i = 0; i < al2.Count; i++)
            {
                Console.WriteLine(al2[i]);
            }
            Console.ReadLine();
        }
    }
}

运行结果

ArrayList

2 Stack

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

using System.Collections;
namespace Stack集合类
{
    class Program
    {
        static void Main(string[] args)
        {
            Stack s1 = new Stack();
            Stack s2 = new Stack();
            foreach (int i in new int[4] { 1, 2, 3, 4 })
            {
                s1.Push(i);
                s2.Push(i);
            }
            foreach (int i in s1)
            {
                Console.WriteLine(i);
            }
            s1.Pop();
            Console.WriteLine("出栈");
            foreach (int i in s1)
            {
                Console.WriteLine(i);
            }
            int num=(int)s2.Peek();
            Console.WriteLine("弹出最后一项{0}",num);
            foreach (int i in s2)
            {
                Console.WriteLine(i);
            }
            Console.ReadLine();
        }
    }
}

运行结果

Stack

3Queue

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

using System.Collections;
namespace Queue集合类
{
    class Program
    {
        static void Main(string[] args)
        {
            Queue q1 = new Queue();
            Queue q2 = new Queue();
            foreach(int i in new int [4]{1,2,3,4})
            {
                q1.Enqueue(i);
                q2.Enqueue(i);
            }
            foreach (int i in q1)
            {
                Console.WriteLine(i);
            }
            q1.Dequeue();
            Console.WriteLine("q1出队");
            foreach (int i in q1)
            {
                Console.WriteLine(i);
            }
            int num=(int)q2.Peek();
            Console.WriteLine("取q2开始处{0}",num);
            foreach(int i in q2)
            {
                Console.WriteLine(i);
            }
            Console.ReadLine();
        }
    }
}

运行结果

Queue

4Hashtable

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

using System.Collections;
namespace Hashtable集合类
{
    class Program
    {
        static void Main(string[] args)
        {
            Hashtable h = new Hashtable();
            h.Add("E","e");
            h.Add("B", "b");
            h.Add("C", "c");
            h.Add("A", "a");
            foreach (DictionaryEntry e in h)
            {
                Console.Write("{0},{1} ", e.Key, e.Value);
            }
            Console.WriteLine();
            string s = (string)h["C"];
            Console.WriteLine(s);
            if (h.Contains("E"))
            {
                Console.WriteLine("含有E");
            }
            Console.WriteLine(h["A"]);
            h.Remove(h["A"]);
            h.Clear();
            foreach (DictionaryEntry e in h)
            {
                Console.Write("{0},{1} ", e.Key, e.Value);
            }
            Console.ReadLine();
        }
    }
}

运行结果

Hashtable

5SortedList

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

using System.Collections;
namespace SortedList集合类
{
    class Program
    {
        static void Main(string[] args)
        {
            SortedList s1 = new SortedList();
            s1["c"]=41;
            s1["a"]=42;
            s1["d"]=11;
            s1["b"]=13;
            foreach (DictionaryEntry e in s1)
            {
                string s = (string)e.Key;
                int i = (int)e.Value;
                Console.Write("{0},{1} ",s,i);
            }
            Console.ReadLine();
        }
    }
}

运行结果

SortedList