Link fixed 10/01/2020
Project Euler: Problem 4, Palindromic numbers
Column norms of a matrix
Acidity of vinegar and salts
Rotate a Matrix by 90 degrees
interesting center of magic matrix
GJam 2013 China Event: Happy Teams 100 Pairs
GJam 2014 China Rd A: Maze with a Left Hand Rule
Minimum Sum thru a Lower Triangle
Gene Sequence Contest: Retro
Rubik's Cube: 30 Moves or Less : Minimum Moves
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