Good problem. :) That's something that they don't teach at schools or universities. Not fractional powers anyway.
Swap the first and last columns
Which doors are open?
Find Rotated Substring
We love vectorized solutions. Problem 1 : remove the row average.
Right Triangle Side Lengths (Inspired by Project Euler Problem 39)
Flexible Anonymous Function
Count up then down
Create an 'arrow-head" matrix
Apply a function array to an array of numbers
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