C#实现整型数据字任意编码任意进制的转换和逆转换
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发布时间：2019-06-24
本文共 3506 字，大约阅读时间需要 11 分钟。
1 using System;  2 using System.Collections.Generic;  3 using System.Linq;  4 using System.Text;  5   6 namespace ConsoleApplication1  7 {  8   9     public class Number 10     { 11         public string Characters 12         { 13             get; 14             set; 15         } 16  17         public int Length 18         { 19             get 20             { 21                 if (Characters != null) 22                     return Characters.Length; 23                 else 24                     return 0; 25             } 26  27         } 28  29         public Number() 30         { 31             Characters = "0123456789"; 32         } 33  34         public Number(string characters) 35         { 36             Characters = characters; 37         } 38  39         ///  40 /// 数字转换为指定的进制形式字符串 41 /// 
 42 ///  43 /// 
      44         public string ToString(long number) 45         { 46             List
     
       result = new List
      
       (); 47             long t = number; 48  49             while (t > 0) 50             { 51                 var mod = t % Length; 52                 t = Math.Abs(t / Length); 53                 var character = Characters[Convert.ToInt32(mod)].ToString(); 54                 result.Insert(0, character); 55             } 56  57             return string.Join("", result.ToArray()); 58         } 59  60         /// 
        61 /// 指定字符串转换为指定进制的数字形式 62 /// 
 63 /// 
        64 /// 
        65         public long FromString(string str) 66         { 67             long result = 0; 68             int j = 0; 69             foreach (var ch in new string(str.ToCharArray().Reverse().ToArray())) 70             { 71                 if (Characters.Contains(ch)) 72                 { 73                     result += Characters.IndexOf(ch) * ((long)Math.Pow(Length, j)); 74                     j++; 75                 } 76             } 77             return result; 78         } 79  80     } 81  82      83  84     class Program 85     { 86         static void Print(long number, Number adapter) 87         { 88             Console.WriteLine("输入数字：{0}", number); 89             Console.WriteLine("规则：{0}\t\t进制：{1}进制", adapter.Characters,adapter.Length); 90             var numtostr = adapter.ToString(number); 91             Console.WriteLine("转换结果：{0}", numtostr); 92             var strtonum = adapter.FromString(numtostr); 93             Console.WriteLine("逆向转换结果：{0}", strtonum); 94             Console.WriteLine(); 95             Console.WriteLine("============ 无聊的分割线 ============"); 96             Console.WriteLine(); 97         } 98  99         static void Main(string[] args)100         {101             //传统的2进制102             Number n1 = new Number("01");103             //传统的8进制104             Number n2 = new Number("01234567");105             //传统的16进制106             Number n3 = new Number("0123456789ABCDEF");107             //自定义编码的N进制，这个可以用来做验证码？108             Number n4 = new Number("爹妈说名字太长躲在树后面会被部落发现");109             //山寨一个短网址110             Number n5 = new Number("0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ");111 112             Print(65535, n1);113             Print(65535, n2);114             Print(65535, n3);115             Print(65535, n4);116             Print(165535, n5);117             118             Console.ReadKey();119 120         }121     }122 }
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