I finally figure out that you use '+length(list)' to index the second column of the list.
Find the sum of all the numbers of the input vector
Angle between two vectors
Back to basics 22 - Rotate a matrix
Add two numbers
Return area of square
Get ranking of a combination looking for speed.
Getting the row and column location from a matrix
Make a simplified barcode
Make blocks of color
Project Euler: Problem 5, Smallest multiple
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