Make a checkerboard matrix
Find the numeric mean of the prime numbers in a matrix.
Swap the first and last columns
What is the distance from point P(x,y) to the line Ax + By + C = 0?
Getting logical indexes
Insert certain elements into a vector.
Robust alignment of coordinate system
Wayfinding 4 - Crossing, level 2
Order of things - 1
Wrap a vector, but insert NaN's at the wrap-positions.
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