What is this digit operation?
0 -> 0
1 -> 9
121 -> 9
44 -> 6
15 -> 5
1243 -> 7
Return unique values without sorting
Duplicate each element of a vector.
What's Your BMI?
Find the path through the cell
Getting the indices from a matrice
Can you beat the lottery again (for hardcore coder) ?
Chess ELO rating system
Negation and new variables
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