摘要: Given a string s1, we may represent it as a binary tree by partitioning it to two non-empty substrings recursively. Below is one possible representati 阅读全文
posted @ 2020-07-24 12:51 Schwifty 阅读(165) 评论(0) 推荐(0)
摘要: Alex and Lee play a game with piles of stones. There are an even number of piles arranged in a row, and each pile has a positive integer number of sto 阅读全文
posted @ 2020-07-24 05:45 Schwifty 阅读(145) 评论(0) 推荐(0)