Additional test cases have been added.
TIL issorted is a function also!
How to find the position of an element in a vector without using the find function
Back to basics 20 - singleton dimensions
Back to basics 21 - Matrix replicating
Is it an Armstrong number?
Write c^3 as sum of two squares a^2+b^2
Check if two matrices are permutations of each other
Check if a matrix is a palindrome in all directions
Reverse digits of a number
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