C# BitArray 实例

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

namespace Hash
{
    class Program
    {
       
        static void Main(string[] args)
        {
            byte a = 5;
            BitArray myBit1 = new BitArray(a);//5个字位,初始化为false
            //myBit1为5位,取用默认初始化,5位都为 False。即为0,由此可见,平时一位的值0和1在C#里面变成False和True;
            myBit1[0] = true;
            myBit1[1] = true;
            
            Console.Write("my Bit1     Count:{0},length:{1},值如下:\n", myBit1.Count, myBit1.Length);
            PrintValues(myBit1, 8);//每8个元素为一行打印元素

            byte [] myByte1 = new byte[] { 1, 2, 3, 4, 5 };//字节数组,byte为0-255的类型
            BitArray myBit2 = new BitArray(myByte1);
            //使用myByte1初始化myBit2;共有5*8个字节位;
            //myByte2为byte数组,内容为1,2,3,4,5;二进制就是00000001,00000010,00000011,00000100,00000101,myBA3就为相应的5*8=40位
            //在myByte2中数字按照二进制数从右到左存取
            Console.Write("my  Bit2     Count:{0},length:{1},值如下:\n", myBit2.Count, myBit2.Length);
            PrintValues(myBit2, 8);//每8个元素为一行打印元素

            bool[] myBools = new bool[5] { true, false, true, true, false };
            BitArray myBA4 = new BitArray(myBools);
            //看输出,bool就想当于一位,myBools是长度为5的数组,变成myBA4后,也是5位;
            Console.Write("myBA4     Count:{0},length:{1},值如下:\n", myBA4.Count, myBA4.Length);
            PrintValues(myBA4, 8);//每8个元素为一行打印元素

            int[]  myInts  = new int[5] { 6, 7, 8, 9, 10 };
            BitArray myBA5 = new BitArray( myInts );
            //int是32位的,5个,换成BitArray当然就是5*32=160。
            Console.Write("myBA5    Count:{0},length:{1},值如下:\n", myBA5.Count, myBA5.Length);
            PrintValues(myBA5, 8);//每8个元素为一行打印元素





            Console.ReadKey();

        }
        public static void PrintValues(IEnumerable myList, int myWidth) //myWidth指定每行显示的个数
        {
            int i = myWidth;
            foreach (Object obj in myList)  //迭代一列数
            {
                if (i <= 0)
                {
                    i = myWidth;
                    Console.WriteLine();
                }
                i--;
                Console.Write("{0,7}", obj);//显示第0个数据obj,占7个符号的位置
                
            }
            Console.WriteLine();
        }
    }
}
posted @ 2012-04-13 21:26  金河  阅读(11022)  评论(1编辑  收藏  举报