What is this digit operation?
0 -> 0
1 -> 9
121 -> 9
44 -> 6
15 -> 5
1243 -> 7
Check to see if a Sudoku Puzzle is Solved
Filter AC, pass DC
Rotate a Matrix
07 - Common functions and indexing 5
Find indices of diagonal elements
Pandigital number n°1 (Inspired by Project Euler 32)
Two functions (to be sure)
Decrypt the cypher using XOR encryption (for beginners)
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