Using explicit iteration is not the most efficient way of solving this problem, but if you do choose to iterate I would suggest using "linear indexing", per https://au.mathworks.com/help/matlab/math/matrix-indexing.html?s_tid=doc_srchtitle#f1-85511
Rotate a Matrix by 90 degrees
Find out total non zero element of matrix
Matrix of almost all zeros, except for main diagonal
Calculate area of sector
Average of even-numbered columns
Probability of red tulips (at both ends of a row)
Calculate feeling temperature before climbing a mountain
Delete the column with all 0 in the TABLE
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