Superb job of not giving away answers in the test suite.
The solutions for x<-1 would require y^2<0.
William, expand the right side.
Sort a list of complex numbers based on far they are from the origin.
cos for boss?
Arrange vector in ascending order
Calculate the area of a triangle between three points
Rotate input square matrix 90 degrees CCW without rot90
List the Moran numbers
Compute the harmonic numbers
Count alternating permutations
Identify Ruth-Aaron numbers
Determine whether a square can be drawn on a grid of dots
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