A "hard" Leetcode problem with a stupidly efficient solution
Solving the Leetcode 24 Game by precomputing the results in a relatively small associative array, although it is marked as a HARD problem.

Solving the Leetcode 24 Game by precomputing the results in a relatively small associative array, although it is marked as a HARD problem.
A clever logarithmical solution for Leetcode Pens and Pencils problem