Create a patchwork matrix
Return the first and last character of a string
Rotate input square matrix 90 degrees CCW without rot90
Change a specific color in an image
Add two numbers
GJam 2012 Qualifier: Tongues
PACMAT 06 - Optimized Ghosts, Equal Speed, Inf Lives; Interactive Download
Access a web hosted copy of the Tiles Contest MAT file
Gene Sequence Contest: Retro
PACMAT 08 - Awesome Tunneling Ghosts, 2X Speed, 6 Lives, Game Download
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