The length of an empty array is 0 not . ;-)
Sorry for that.. fixed it.. :)
Vectorizing, too easy or too hard?
Whether the input is vector?
Sum the numbers on the main diagonal
Return area of square
length of string on cylinder
Largest Geometric Series
Integer Sequence - 1
Integer Sequence - II : New Fibonacci
Fermat's last theorem - again
Diagonal of a Spiral Matrix
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