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.
Counting in Finnish
Calculate the Number of Sign Changes in a Row Vector (No Element Is Zero)
Pernicious Anniversary Problem
Divisible by 9
Unique dice configurations
That's some divisor you've got there...
Converting numbers back from extended form
The Hills Are Alive...
Circular Primes (based on Project Euler, problem 35)
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