Technically, L1 & L2 are line segments, and L3 & L4 are polylines.
Word Counting and Indexing
Right and wrong
Project Euler: Problem 9, Pythagorean numbers
intersection of matrices
Moving average (variable kernel length)
MatCAT - Reconstruct X from Its X-rays
Rotate and display numbered tile
Spot the rectangle
Simulate one complete step in the Biham–Middleton–Levine traffic model
Spot the outlier
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