You aren't paying attention and you accidentally type a bunch of random letters on your keyboard. You want to know if you ever typed the same letter twice, or if they are all unique letters.
If you are given a string of random letters, your task is to evaluate whether any letter is repeated in the string or if you only hit unique keys while you typing.
A string of random letter characters (no numbers or other buttons were pressed).
A string that says 'Deja Vu' if any letter is repeated in the input string, or a string that says 'Unique' if there are no repeats.
aaaaaaaghhhhjkll
Deja Vu
Your program should output 'Deja Vu' because there are many repetitions in 'aaaaaaaghhhhjkll'.