Write a function to determine whether or not the matrix is a projector. Projector matrices are defined as P^2 = P.
test 8 is not a symmetric matrix, is it a projector matrix?
Sorry about that one. I've removed that test case. I don't know how long it will take for the re-scoring to propagate, though.
Find the two most distant points
Arrange vector in ascending order
Rotate a Matrix by 90 degrees
Rotate input square matrix 90 degrees CCW without rot90
Square a Number
Scrabble Scores - 7
Scrabble Scores - 2
Lights Out 11 - 5x5, with wrapping, x moves
5th Time's a Charm
Scrabble Scores - 13
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