Better than all previous non-cheat solutions :-)
The function 'unique' should probably also be prohibited.
Strictly following the problem statement, this should pass?
This also does the trick :)
Back to basics 23 - Triangular matrix
Determine Whether an array is empty
Return the first and last character of a string
Will there be a new leader?
Capitilize the first letter of every word in a string
Add a vector to a matrix
How many unique Pythagorean triples?
Product of Each Column
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