摘要： 题目： Given an input string, reverse the string word by word. For example,Given s = "the sky is blue",return "blue is sky the". 思路： 利用两个stack，一个表示单词，一个表 阅读全文

摘要： 题目： Given an absolute path for a file (Unix-style), simplify it. For example,path = "/home/", => "/home"path = "/a/./b/../../c/", => "/c" click to sho 阅读全文