In this problem, the author is imagining again an abstract pyramid made by layers of square matrices of zeros that decrease evenly until the top is reached (the top is made by ones; for instance, a pyramid of base 5(n) would be zeros(5)-> zeros(3) -> ones(1)). We are looking at the pyramid from the top view (that's why is flattened).
Find relatively common elements in matrix rows
Back to basics 4 - Search Path
Basic electricity in a dry situation
Height of a right-angled triangle
Height of a 3D Pyramid
cross-section of 3D pyramid
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