C#

wSheng87 wrote:

because it gave me 8372400001 which reverse the original input.

private static readonly System.Collections.Generic.Dictionary<char,char> wombat ;
 
static Template
(
)
{
    wombat = new System.Collections.Generic.Dictionary<char,char>() ;
 
    wombat [ '0' ] = '9' ;
    wombat [ '1' ] = '8' ;
    wombat [ '2' ] = '7' ;
    wombat [ '3' ] = '6' ;
    wombat [ '4' ] = '5' ;
    wombat [ '5' ] = '4' ;
    wombat [ '6' ] = '3' ;
    wombat [ '7' ] = '2' ;
    wombat [ '8' ] = '1' ;
    wombat [ '9' ] = '0' ;
 
    return ;
}
 
private static string
Wombat
(
    string s
)
{
    System.Text.StringBuilder result = new System.Text.StringBuilder() ;
 
    foreach ( char c in s )
    {
        if ( wombat.ContainsKey ( c ) )
        {
            result.Append ( wombat [ c ] ) ;
        }
        else
        {
            result.Append ( c ) ;
        }
    }
 
    return ( result.ToString() ) ;
}

wSheng87 wrote:

P-1234-1000042373.

wSheng87 wrote:

encrypt the final 10 digit

...
using System.IO;
...

...
File.Copy(@"C:\test.exe", @"C:\Temp\test.exe");
...

anishkannan wrote:

why did not print "Hello" and why print False instead of True