new-member-9
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tas12 commented
Monoalphabetic substitution cipher
Write a function subCipher that takes a string and replaces each letter with the next letter in the alphabet. Letters in the encoded string should be in uppercase.
Example:
subCipher("welcome to the group!"); //returns "XFMDPNF UP UIF HSPVQ!"
Repl.it is a good place to try out your code.