Given two sets of data A and B. Find elements of A those are not in set B.
For example: A = [1 5 3], B = [4 250 558 22 0 1 3] should return ele = 5.
Omit columns averages from a matrix
Project Euler: Problem 6, Natural numbers, squares and sums.
Given a 4x4 matrix, swap the two middle columns
Back to basics - mean of corner elements of a matrix
Find the Area of a Polygon
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