Problem18 By starting at the top of the triangle below and moving to adjacent numbers on the row below, the maximum total from top to bottom is 23. 3 7 4 2 4 6 8 5 9 3 That is, 3 + 7 + 4 + 9 = 23. Find the maximum total from top to bottom …

Problem15 Starting in the top left corner of a 2×2 grid, and only being able to move to the right and down, there are exactly 6 routes to the bottom right corner. How many such routes are there through a 20×20 grid? 訳 2x2の格子の左上の隅…

memoize 前回こんなコードを書いていた。 (defn get-content [c sm] (let [rdr ((memoize get-data) sm)] (assoc {} c (first (:content (first (html/select (html/html-resource rdr) [c]))))) )) これでキャッシュされると思っていたらしい。アホか。 (de…