Check if a inputted variable is a number or a string, given a string input (i.e. '1' is 1 and thus a number, 'a' is a string).
Additional test cases have been added.
Calculate the area of a triangle between three points
Integer or Float?
Find remainder when x is divided by 3
Matrix Max Finder
Find the index of the lowest number in a matrix
Replace 0 indices in array with 1's
Simple Vector Addition
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