This is (more or less) cribbed from the USC contest winner's solution.
Very fast and very compact solution. Nice usage of complex to calculate distance between points and recursion.
Extract leading non-zero digit
Check if sorted
Remove the air bubbles
Count up then down
03 - Matrix Variables 6
Angle between Two Vectors
Adding and Subtracting UINT variables
GJam 2014 China Rd B: Sudoku Checker
GJam: 2013 China Event: Cannon Angle
Criss_Cross_010 : Unique elements, Square array, Words in one array
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