Really fun problem, but the test case is totally wrong. :-(
glad you liked the problem, but the test case is correct just obfuscated.
Swap the first and last columns
Which values occur exactly three times?
Volume of this donut
Count up then down
Reshape a Vector
Tony's trick for duplicating an mx1 vector n times
is the number happy?
Strange Number Algorithms
Is this number Munchhausen Narcissistic?
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