Just to clarify the problem statement: the objective of this problem seems to be to determine the number of unique vowels used in the given string.
Correct output for Laboratory is 3.
Return unique values without sorting
Vector of numbers divisible by 3
~~~~~~~ WAVE ~~~~~~~~~
Diagonal & Anti-Diagonal Matrix: Easy
Reverse CHECKBOX MATRIX with 69
BULLSEYE Part 2: Reference Problem 18 BULLSEYE
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