How to print the previous alphabets of a given string?

Question

Eg. If the Input is 'CAT’ the output will be 'BZS'. DOG-> CNF

Answer 1

https://code.sololearn.com/cr8Eho8eBW83/?ref=app

Answer 2

A bit late, but i still want to share this code with you:

- the "replacement / movement" can be done in any direction by using positive or negativ numbers
- from module string the uppercase letters are used. this does not create an overhead, it just creates a variable with the alphabet
- the alphabet is used and rotated by the value of "move"
- a dictionary is created by using zip() with original alphabet and the rotated version
- the replacement is done in a list comprehension
*** this code can also be used to encrypt / decrypt text. in this case a shuffeld alphabet can be used instead of an ordered alphabet

https://code.sololearn.com/c1rNe8FqRU87/?ref=app

Answer 3

this works with both small and capital letters..

a="CAT"
b=""
for i in a:
b += chr(ord(i)+25) if(i=='A' or i=='a') else chr(ord(i)-1)
print(b)

Answer 4

a="CAT"
b=""
for i in a:
if ord(i)==65:
b+=chr(90)
continue
b+=chr(ord(i)-1)

print(b)

Answer 5

Thank you guys.got it

Answer 6

Another way will be to put the alphabet in a list or array and choose a previous index to the character input.

Answer 7

I'm kind of a beginner so I didn't quite get Vitaly's code. I'm going with this
https://code.sololearn.com/c83qYy6QnfOh/?ref=app