Two whole lines. Someone is slipping. I especially enjoyed the regexp implementation that created trailing spaces for the words using split. Line 2 will take much longer to digest.
Find the palindrome
Increment a number, given its digits
Four quadrant inverse tangent function.
Dancing with wolves?
GJam 2014 China Rd A: Library Sorting (Large)
Gene Sequence Contest: Retro
Extract Built In Functions and Toolbox Functions from String or Function Handle
Rubik's Cube: 30 Moves or Less : Cody Size
GJam: 2013 China Event: Cannon Angle
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