题目 简化路径 给定一个文档(Unix-style)的完全路径,请进行路径简化. 样例 "/home/", => "/home" "/a/./b/../../c/", => "/c" 挑战 你是否考虑了 路径 = "/../" 的情况? 在这种情况下,你需返回"/". 此外,路径中也可能包含双斜杠'/',如 "/home//foo/". 在这种情况下,可忽…

Given an absolute path for a file (Unix-style), simplify it. Have you met this question in a real interview?     Example "/home/", => "/home" "/a/./b/../../c/", => "/c" Challenge Did you consider the case wher…

Given an absolute path for a file (Unix-style), simplify it. Or in other words, convert it to the canonical path.In a UNIX-style file system, a period . refers to the current directory. Furthermore, a double period .. moves the directory up a level.…

Given an absolute path for a file (Unix-style), simplify it. For example,path = "/home/", => "/home"path = "/a/./b/../../c/", => "/c" click to show corner cases. Corner Cases: Did you consider the case where p…

给定一个文档 (Unix-style) 的完全路径,请进行路径简化.例如,path = "/home/", => "/home"path = "/a/./b/../../c/", => "/c"边界情况:    你是否考虑了 路径 = "/../" 的情况?    在这种情况下,你需返回"/".    此外,路径中也可能包含多个斜杠'/',如 "/home//foo…

Given an absolute path for a file (Unix-style), simplify it. For example,path = "/home/", => "/home"path = "/a/./b/../../c/", => "/c" Corner Cases: Did you consider the case where path = "/../"?In th…

给定一个文档 (Unix-style) 的完全路径,请进行路径简化. 例如, path = "/home/", => "/home" path = "/a/./b/../../c/", => "/c" 边界情况: 你是否考虑了 路径 = "/../" 的情况? 在这种情况下,你需返回 "/" . 此外,路径中也可能包含多个斜杠 '/' ,如 "/home//foo/…

问题: 来源:https://leetcode.com/problems/simplify-path Given an absolute path for a file (Unix-style), simplify it. For example,path = "/home/", => "/home"path = "/a/./b/../../c/", => "/c" Corner Cases:Did you con…

题目 Implement Trie Implement a trie with insert, search, and startsWith methods. 样例   注意 You may assume that all inputs are consist of lowercase letters a-z. 解题 Trie,字典树,又称单词查找树.前缀树,是一种哈希树的变种.应用于字符串的统计与排序,经常被搜索引擎系统用于文本词频统计. 性质: 1.根节点不包含字符,除根节点外的每一个节点都…

题目: k数和 II 给定n个不同的正整数,整数k(1<= k <= n)以及一个目标数字. 在这n个数里面找出K个数,使得这K个数的和等于目标数字,你需要找出所有满足要求的方案. 样例 给出,返回 [[1,4],[2,3]] 解题: 题目中限制的条件很多,A数组中的各个数字都不相等,A中k个数的和是 target 问题: 1.在所有的组合方式中,A[i] 是否会重复,也就是说,A[i] ,即在{a,b,A[i]} 也在{a1,b1,A[i]}中. 可能:如A = {1,2,3,4,5} 3个…