实践一下ArrayList

     以下是ArrayList里常用的方法，还有一个枚举哦。 项目都是这样一步一步累积起来的，多写写，赫赫。

 

using System;
using System.Collections.Generic;
using System.Text;
using System.Collections;

namespace TestArayListClass
...{
    class Program
    ...{
        static void Main(string[] args)
        ...{
            ArrayList testAL = new ArrayList();
            for(int i = 0;i<10;i++)
            ...{
                testAL.Add(i+1);
            }
            testAL.Add(8);
            Program test = new Program();
            test.PrintValues(testAL);
            Console.WriteLine("");
            Console.WriteLine("元素个数是"+testAL.Count);
            Console.WriteLine("总容量是"+testAL.Capacity);
            Console.WriteLine("下面进行元素查找");
            test.FindObject(testAL, 3);
            test.FindObject(testAL, 8);
            Console.WriteLine("下面将'4'移除法");
            testAL.Remove(4);
            test.PrintValues(testAL);
            Console.WriteLine("下面将下标为4的元素移除");
            testAL.RemoveAt(4);
            test.PrintValues(testAL);
            Console.WriteLine("删除2－6范围的元素");
            testAL.RemoveRange(2, 6);
            test.PrintValues(testAL);
            Console.WriteLine("将A-E的字母添加到当前对象");
            string[] s = new string[] ...{ "A","B","C","D","E"};
            testAL.AddRange(s);
            test.PrintValues(testAL);
            Console.WriteLine("下面执行清楚所有元素的操作");
            testAL.Clear();
            test.PrintValues(testAL);
            Console.WriteLine("当前元素的个数是："+testAL.Count);
            Console.WriteLine("当前元素的总量是："+testAL.Capacity);
            Console.ReadLine();
        }

        public void PrintValues(IEnumerable testList)
        ...{
            System.Collections.IEnumerator testEnumerator = testList.GetEnumerator();
            Console.Write("当前所有元素的值：");
            while (testEnumerator.MoveNext())
                Console.Write("" + testEnumerator.Current);
        }

        public void FindObject(ArrayList testList,Object obj)
        ...{
            int index = testList.BinarySearch(obj);
            if (index > 0)
                Console.WriteLine("  值 为   " + obj.ToString() + "的对象是第" + index + "元素");
            else
                Console.WriteLine("当前对象包括该值。");
        }
    }
}