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).
Word Counting and Indexing
Make a 1 hot vector
Magic is simple (for beginners)
Max index of 3D array
What is the scope of variables in Matlab ?
Longest Collatz Sequence
BLOCK x3 (Version 4)
Find my secret number
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