nicely done!first one use ndgrid finish the orginal expansion in this one.
I think it's the first time I see this function in Cody.
Factorize THIS, buddy
Angle between Two Vectors
Make a run-length companion vector
Check if number exists in vector
Circular Primes (based on Project Euler, problem 35)
Go to the head of the class!
Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock.
Pandigital Factors (Based on Euler 491)
Sleeping Queens 1
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