-4 + 3 +1=0 right. I don't remember you saying the absolute value in the instructions.
Sort a list of complex numbers based on far they are from the origin.
Rotate a Matrix
find the roots of a quadratic equation
Is this triangle right-angled?
Summation of array
Create the following sequence : 0 1 1 4 9 25 64 169 ...
Reverse a matrix
Convert a number to its Roman representation
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