May you add some testcases concerning that ~mod(63-45,9) = true, but 63 and 45 has definitely not the same digits.
surface of a spherical planet
Getting the indices from a vector
Sum the Digits of a Number
Matlab Basics II - Count rows in a matrix
Lychrel Number Test (Inspired by Project Euler Problem 55)
Roll the Dice!
N-Dimensional Array Slice
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