Sort complex numbers into complex conjugate pairs.
Input x = [3-6i -1-4i -1+4i 3+6i]
Sorted output = [-1 - 4i -1 + 4i 3 - 6i 3 + 6i]
Finding Perfect Squares
Number of Circles in a Number
Check if number exists in vector
calculate linear convolution two vectors
Insert zeros into vector
Moving average (variable kernel length)
Change the sign of even index entries of the reversed vector
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