Additional test cases have been added.
TIL issorted is a function also!
give nth decimal place of pi
Increment a number, given its digits
Back to basics 8 - Matrix Diagonals
Rotate input square matrix 90 degrees CCW without rot90
Check that number is whole number
Check if two matrices are permutations of each other
Reverse digits of a number
Check if a matrix is a palindrome in all directions
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