A good opportunity to implement a hashtable: lots of collisions without it.
A re-post of Solution 1137054, because that one doesn't appear in the list of solutions, for some reason (I'm not sure why).
Which values occur exactly three times?
radius of a spherical planet
Construct an index vector from two input vectors in vectorized fashion
Rounding off numbers to n decimals
Getting the indices from a matrice
Magic is simple (for beginners)
Chess ELO rating system
Find the path through the cell
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