class Solution { public: vector<string> ret; string src; int len; unordered_set<string> added; vector<string> restoreIpAddresses(string s) { if ( s.empty() ) return ret; src = s; len = src.size(); backTrack(,, ""); return ret;…

题目链接 leetcode 93. Restore IP Addresses 题意 给定一段序列,判断可能组成ip数的所有可能集合 思路 可以采用模拟或者DFS的想法,把总的ip数分成四段,每段判断是否满足题意 class Solution { public: vector<string> ans; vector<string> restoreIpAddresses(string s){ if(!s.size()) return ans; solve(0,0,s,"&qu…

Restore IP Addresses Given a string containing only digits, restore it by returning all possible valid IP address combinations. For example:Given "25525511135", return ["255.255.11.135", "255.255.111.35"]. (Order does not mat…

Given a string containing only digits, restore it by returning all possible valid IP address combinations. Example: Input: "25525511135" Output: ["255.255.11.135", "255.255.111.35"] 解法:Backtracking Java: public class Solution…

Given a string containing only digits, restore it by returning all possible valid IP address combinations. For example:Given "25525511135", return ["255.255.11.135", "255.255.111.35"]. (Order does not matter) 思路:回溯法 解向量X={str…

Given a string containing only digits, restore it by returning all possible valid IP address combinations. For example:Given "25525511135", return ["255.255.11.135", "255.255.111.35"]. (Order does not matter) 将给定字符串变为合法的IP地址(…

Given a string containing only digits, restore it by returning all possible valid IP address combinations. For example: Given "25525511135", return ["255.255.11.135", "255.255.111.35"]. (Order does not matter) 解题思路: 使用循环即可解决,…

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Restore IP Addresses Given a string containing only digits, restore it by returning all possible valid IP address combinations. For example:Given "25525511135", return ["255.255.11.135", "255.255.111.35"]. (Order does not mat…

Restore IP Addresses My Submissions Question Solution Given a string containing only digits, restore it by returning all possible valid IP address combinations. For example: Given "25525511135", return ["255.255.11.135", "255.255.…

1. Reverse Linked List II Reverse a linked list from position m to n. Do it in-place and in one-pass. For example:Given 1->2->3->4->5->NULL, m = 2 and n = 4, return 1->4->3->2->5->NULL. Note:Given m, n satisfy the following c…

backtracking and invariant during generating the parathese righjt > left  (open bracket and cloase barckst) class Solution { //["((()))","(()())","(())()","()(())","()()()","())(()"] wrong cas…

1.  Binary Tree Inorder Traversal Given a binary tree, return the inorder traversal of its nodes' values. For example: Given binary tree {1,#,2,3}, 1 \ 2 / 3 return [1,3,2]. Note: Recursive solution is trivial, could you do it iteratively? 分析:求二叉树的…

题目: Given a string containing only digits, restore it by returning all possible valid IP address combinations. For example:Given "25525511135", return ["255.255.11.135", "255.255.111.35"]. (Order does not matter) 链接: http://l…

93.Restore IP Addresses Medium 617237FavoriteShare Given a string containing only digits, restore it by returning all possible valid IP address combinations. Example: Input: "25525511135" Output: ["255.255.11.135", "255.255.111.35…

给定一个只包含数字的字符串,复原它并返回所有可能的IP地址格式.例如:给定 "25525511135",返回 ["255.255.11.135", "255.255.111.35"]. (我们可以不考虑数组内元素的顺序)详见:https://leetcode.com/problems/restore-ip-addresses/description/ Java实现: class Solution { public List<String&g…

题目 Given a string containing only digits, restore it by returning all possible valid IP address combinations. Example: Input: "25525511135" Output: ["255.255.11.135", "255.255.111.35"] 解答 一开始看还挺难的,想了想发现其实就是DFS.索的每一步就相当于从剩下的字符…

Given a string containing only digits, restore it by returning all possible valid IP address combinations. For example:Given "25525511135", return ["255.255.11.135", "255.255.111.35"]. (Order does not matter) 典型的dfs,但是要点是注意什么…

原题地址:https://oj.leetcode.com/problems/restore-ip-addresses/ 题意: Given a string containing only digits, restore it by returning all possible valid IP address combinations. For example:Given "25525511135", return ["255.255.11.135", "…

Given a string containing only digits, restore it by returning all possible valid IP address combinations. For example:Given "25525511135", return ["255.255.11.135", "255.255.111.35"]. (Order does not matter) 这道题要求是复原IP地址,IP地…

题目来源 https://leetcode.com/problems/restore-ip-addresses/ Given a string containing only digits, restore it by returning all possible valid IP address combinations. For example:Given "25525511135", return ["255.255.11.135", "255.25…

Given a string containing only digits, restore it by returning all possible valid IP address combinations. For example:Given "25525511135", return ["255.255.11.135", "255.255.111.35"]. (Order does not matter) 题目是给一个string,划分合…

一天一道LeetCode 本系列文章已全部上传至我的github,地址:ZeeCoder's Github 欢迎大家关注我的新浪微博,我的新浪微博 欢迎转载,转载请注明出处 (一)题目 Given a string containing only digits, restore it by returning all possible valid IP address combinations. For example: Given "25525511135", return [&qu…

原题链接: http://oj.leetcode.com/problems/restore-ip-addresses/  这道题的解法很接近于NP问题.也是採用递归的解法. 基本思路就是取出一个合法的数字,作为IP地址的一项,然后递归处理剩下的项.能够想象出一颗树,每一个结点有三个可能的分支(由于范围是0-255,所以能够由一位两位或者三位组成).而且这里树的层数不会超过四层,由于IP地址由四段组成,到了之后我们就不是必需再递归下去.能够结束了.这里除了上述的结束条件外,还有一个就是字符串读完了…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 回溯法 日期 题目地址:https://leetcode.com/problems/restore-ip-addresses/description/ 题目描述 Given a string containing only digits, restore it by returning all possible valid IP address co…

题目 Given a string containing only digits, restore it by returning all possible valid IP address combinations. For example: Given “25525511135”, return [“255.255.11.135”, “255.255.111.35”]. (Order does not matter) 分析 给定一个字符串,给出其可构成的所有ip集合: 下面用两种方法解决这个…

题目链接 题目要求: Given a string containing only digits, restore it by returning all possible valid IP address combinations. For example: Given "25525511135", return ["255.255.11.135", "255.255.111.35"]. (Order does not matter) 本题的解…

Given a string containing only digits, restore it by returning all possible valid IP address combinations. For example:Given "25525511135", return ["255.255.11.135", "255.255.111.35"]. (Order does not matter) 我的答案如下: class So…

题目: Given a string containing only digits, restore it by returning all possible valid IP address combinations. For example: Given "25525511135", return ["255.255.11.135", "255.255.111.35"]. (Order does not matter) 题解: 利用循环递归解…

Given a string containing only digits, restore it by returning all possible valid IP address combinations. For example:Given "25525511135", return ["255.255.11.135", "255.255.111.35"]. (Order does not matter) public class Sol…