Encryptology Challenge🏆🏆!!

Question

Encryptology is the process of encoding a string to another form in such a way that it cannot be decoded by an unauthorized person.

You are to encode a program in your language to encrypt the string in such a way that each character of the string is replaced with a character at a mentioned gap (say, move).
If move is positive then the characters are replaced by characters ahead by the given move while for a negative move, the opposite occurs.

In case the move is 0 then the same string is produced.
The characters are wrapped, i.e, Z is followed by A and A is followed by Z considering the moves to be negative and positive respectively.

E.g: ABZ can be encrypted as CDB if move = 2
ABZ can be encrypted as YZX if move = -2

Best of Luck!!
And Happy Coding!

Answer 1

If the gap is constant, decrypting is childishly easy, as you have a fairly low number of attempts to go. Perhaps the gap itself could vary according to a certain pattern? If so, then see my first attempt - the gap increases with each character and does not follow a simple 'tit for tat' schema:

https://code.sololearn.com/cuKnuo01NOb9/?ref=app

Answer 2

As simple as that!
https://code.sololearn.com/c5yjofZ1Fp4I/?ref=app

Answer 3

One example in Java:
https://code.sololearn.com/c76nQ0ampaZy/#java

Answer 4

encript=lambda s,gap,a="abcdefghijklmnopqrstuvwxyz":join(a[(a.index(c)+gap)%len(a)] for c in s)

Answer 5

https://code.sololearn.com/cs2O3Gp8S7z2/?ref=app

Answer 6

My PHP solution with strtr and substr.

https://code.sololearn.com/wRET0SyV22F7

Answer 7

@Kuba Even I was thinking of making it a bit more difficult as it is easy but I myself wasn't getting the code :P