[algorithm] mitbbs collection

字典里找子串怎么解: http://www.mitbbs.com/article_t/JobHunting/32490911.html http://en.wikipedia.org/wiki/Trie 就是一个ARRAY，所有的元素都出现了三次，只有一个出现了一次。找出这个一次的元 素。SPACE(O(1)), TIME (O(N)) http://www.mitbbs.com/article_t/JobHunting/32491585.html 括号问题的迭代解法 http://www.mitbbs.com/article_t/JobHunting/32216649.html 經驗分享 http://www.mitbbs.com/article_t/JobHunting/32477683.html fb總結 http://www.mitbbs.com/article_t/JobHunting/32492515.html