clojure 乘法口诀表

(defn kj [x]
　　(letfn [(f [x y] (format "%d*%d=%d" x y (* x y)))
　　(g [c] (clojure.string/join " " (map #(f % (count c)) c)))
　　(t [] (map #(range 1 (inc %)) (range 1 (inc x))))]
　　　　(let [t (t)] (pprint (map g t)))))

(kj 9)