-
Notifications
You must be signed in to change notification settings - Fork 0
/
Caesar.cs
45 lines (44 loc) · 1.59 KB
/
Caesar.cs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
namespace Lib_SC
{
public class Caesar
{
//Main Function
//encrption:is old Text
//Key:num to Encryption or Decryption
//enc:Enc?DisEnc
public static string MainCaesar(string encrption, int key, bool enc)
{
key = enc ? key : -key;//Encryption:Decryption
string newString = "";
encrption.ToList()
.ForEach(x => newString = $"{newString}{EncryptionChar(x, key)}");
return newString;
}
//cheack If Char small Or Captial
//And Return New Char
private static char EncryptionChar(char c, int key) =>
cheackChar(c).Invoke(c, key);
//IF Char small=> retun (Function)ConverChar_Small
//Else=>(Function)ConverChar_Captial
private static Func<char, int, char> cheackChar(char c) =>
c >= 97 && c <= 122 ? ConverChar_Small : ConverChar_Capital;
//Conver Char small (c:a,key:2)=>a=c
//a 97 //z 122
private static char ConverChar_Small(char c, int key)
{
int index = c;
index = index + key;
index = index >= 97 && index <= 122 ? index : (index > 122) ? index - 26 : index + 26;
return (char)index;
}
//Conver Char Captial (c:A,key:2)=>A=C
//A 65 //Z 90
private static char ConverChar_Capital(char c, int key)
{
int index = c;
index = index + key;
index = index >= 65 && index <= 90 ? index : (index > 90) ? index - 26 : index + 26;
return (char)index;
}
}
}