These are my solutions from the year 2022.
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Djikstra's algorith / heap https://en.wikipedia.org/wiki/Dijkstra%27s_algorithm https://www.npmjs.com/package/heap
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Searches https://en.wikipedia.org/wiki/Depth-first_search https://en.wikipedia.org/wiki/Breadth-first_search
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Combinatorics https://en.wikipedia.org/wiki/Permutation https://en.wikipedia.org/wiki/Combination