What is this digit operation?
0 -> 0
1 -> 9
121 -> 9
44 -> 6
15 -> 5
1243 -> 7
Connect Four Win Checker
Reverse the Words (not letters) of a String
Change the sign of even index entries of the reversed vector
Find the index of n in magic(n)
Create a vector
Mirror, mirror on the wall, who is fairest of them all?
Pandigital number n°1 (Inspired by Project Euler 32)
Divisors for big integer
Magic is simple (for beginners)
Find Missing Number
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