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.
Determine whether a vector is monotonically increasing
Project Euler: Problem 9, Pythagorean numbers
Fill a zeros matrix
Count up then down
Reverse the elements of an array
Approximation of Pi (vector inputs)
Lights Out 3 - 5x5, 6 moves
Combined Ages 3 - Non-symmetric, n ≥ 3
Lights Out 7 - 5x5, x moves
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