(python language)

Mrs. Meier and Mr. Mller want to communicate encrypted. You use a table so far

On a note, in which each unencrypted letter replaces by another letter

is: For each letter A-Z, A-Z there is exactly one replacement sign. At the moment you have to

Making manually, but you want to write a program for this. The program should

Encrypt (Encrypt) and decrypt (decrypt), depending on the user input.

1) Why, it makes sense to disassemble tasks in subtasks

2) Name all partial tasks that the program must meet

3)Create a morphological box where you can do the possible ones for each part task

Solutions are detected