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.
Sort a list of complex numbers based on far they are from the origin.
Is this matrix orthogonal?
Sum the Digits of a Number
Celsius to Kelvin
Lights Out 14 - 5x5, four stages, x moves
Lights Out 4 - 5x5, 8 moves
Divisible by 7
Lights Out 13 - 5x5, three stages, x moves
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