Test case x=[11 22 132] will cause some solutions here to fail.
Great catch! Test case added; and by "some solutions" you mean "All solutions except yours and mine."
Well done, Tim. I noticed the bug of my solution, but it did work for the old test suit, and I was too lazy to fix the bug.
So many choices
Project Euler: Problem 3, Largest prime factor
Find a Pythagorean triple
Pernicious Anniversary Problem
A matrix of extroverts
Matrix of Multiplication Facts
Diophantine Equations (Inspired by Project Euler, problem 66)
Go to the head of the class!
Sleeping Queens 1
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