用C＃實現(xiàn)由15位身份證號升級到18位的算法

2019-11-18 16:53:11

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供稿：網(wǎng)友

1using System;
2using System.Collections;
3
4public class MyClass
5{
6    public static void Main()
7    {
8        Console.WriteLine(per15To18("429005811009091"));
9        RL();
10    }
11
12    public static string per15To18(string perIDSrc)
13 {
14   int iS = 0;
15
16   //加權(quán)因子常數(shù)
17   int[] iW=new int[]{7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2};
18   //校驗碼常數(shù)
19   string LastCode="10X98765432";
20   //新身份證號
21   string perIDNew;
22
23   perIDNew=perIDSrc.Substring(0,6);
24   //填在第6位及第7位上填上‘1’，‘9’兩個數(shù)字
25   perIDNew += "19";
26
27   perIDNew += perIDSrc.Substring(6,9);
28
29   //進行加權(quán)求和
30   for( int i=0; i<17; i++)
31   {
32    iS += int.Parse(perIDNew.Substring(i,1)) * iW[i];
33   }
34
35   //取模運算，得到模值
36   int iY = iS%11;
37   //從LastCode中取得以模為索引號的值，加到身份證的最后一位，即為新身份證號。
38   perIDNew += LastCode.Substring(iY,1);
39
40   return perIDNew;
41 }
42
43
44
45
46    Helper methods#region Helper methods
47
48    PRivate static void WL(object text, params object[] args)
49    {
50        Console.WriteLine(text.ToString(), args);
51    }
52
53    private static void RL()
54    {
55        Console.ReadLine();
56    }
57
58    private static void Break()
59    {
60        System.Diagnostics.Debugger.Break();
61    }
62
63    #endregion
64}
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