This person is just using hard coded solutions to solve problems. You can check his recent solutions and see.
Find all elements less than 0 or greater than 10 and replace them with NaN
Find the hypotenuse
Sum of self power series
Accessing values in a cell
High Precision Square Root (Inspired by Project Euler 80)
Rolling maximums above a threshold
Unique dice configurations
S-T-R-E-T-C-H I-T O-U-T
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