I am after a function, which could work out the inverse of a letter:
Dim a as string
a b c d e f
A = F E D C B A
Now the inverse would be F E D C B A
The inverse is worked out by working out the inverses of the substitution, for example the inverse of E would be B, the Inverse of A would be F, the inverse of C would be D.
Can anyone please help me find a function, I was told a mid function could be used. Do we need a loop, please please me with the code, I will be able to do the rest, please show me some example of working code