What is this digit operation?
0 -> 0
1 -> 9
121 -> 9
44 -> 6
15 -> 5
1243 -> 7
Find the biggest empty box
Create an index-powered vector
Area of an Isoceles Triangle
Find the index of n in magic(n)
Pandigital number n°3 (Inspired by Project Euler 32)
Permute diagonal and antidiagonal
Rank of magic square (for beginners)
Divisors for big integer
Replicate elements in vectors
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