length!! and not "not isempty"... good point!
Project Euler: Problem 6, Natural numbers, squares and sums.
N-Dimensional Array Slice
Reverse a matrix
What is Sum Of all elements of Matrix
Binary code (array)
Numbers spiral diagonals (Part 2)
Rank of magic square (for beginners)
How to reverse spdiags?
Can you beat the lottery again (for hardcore coder) ?
BLOCK x3 (Version 4)
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