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.
02 - Vector Variables 2
07 - Common functions and indexing 4
Add a row of zeros on top of a matrix
ZigZag matrix with reflected format
factor to number
Put Two 1D matrices into one 1D matrix
Generate binary combinations for a given number of bit(s)
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