In the video game Fallout 4, the quest "Road to Freedom" requires players to reach a metal dial called the "Freedom Trail Ring", and use the dial to spell a specific keyword in order to open the door. Given a string ring, which represe…

详见:https://leetcode.com/problems/freedom-trail/description/ C++: class Solution { public: int findRotateSteps(string ring, string key) { int n = ring.size(), m = key.size(); vector<vector<int>> dp(m + 1, vector<int>(n)); for (int i = m -…

In the video game Fallout 4, the quest "Road to Freedom" requires players to reach a metal dial called the "Freedom Trail Ring", and use the dial to spell a specific keyword in order to open the door. Given a string ring, which represe…

In the video game Fallout 4, the quest "Road to Freedom" requires players to reach a metal dial called the "Freedom Trail Ring", and use the dial to spell a specific keyword in order to open the door. Given a string ring, which represe…

题目:https://leetcode.com/problems/freedom-trail/ 额...不解释大意了,题目我也不想写过程了有点繁琐,直接给出代码: public int findRotateSteps(String ring, String key) { int rlen = ring.length(); int klen = key.length(); int[][]dp = new int[klen+1][rlen+1]; int temp = 0,step = 0,diff…

突然很想刷刷题,LeetCode是一个不错的选择,忽略了输入输出,更好的突出了算法,省去了不少时间. dalao们发现了任何错误,或是代码无法通过,或是有更好的解法,或是有任何疑问和建议的话,可以在对应的随笔下面评论区留言,我会及时处理,在此谢过了. 过程或许会很漫长,也很痛苦,慢慢来吧. 编号 题名 过题率 难度 1 Two Sum 0.376 Easy 2 Add Two Numbers 0.285 Medium 3 Longest Substring Without Repeating C…

1. 532. K-diff Pairs in an Array 分析:由于要唯一,所以要去重,考虑k=0,时候,相同的数字需要个数大于1,所以,先用map统计个数,对于k=0,特判,对于其他的,遍历每一个数,只需要判断a + k是否存在即可. 这个题目,是absolute difference,我没注意这点,没有判断k<0,直接return 0,导致出错. class Solution { public: int findPairs(vector<int>& nums, int…

DFS基础 深度优先搜索(Depth First Search)是一种搜索思路,相比广度优先搜索(BFS),DFS对每一个分枝路径深入到不能再深入为止,其应用于树/图的遍历.嵌套关系处理.回溯等,可以用递归.堆栈(stack)实现DFS过程. 关于广度优先搜索(BFS)详见:算法与数据结构基础 - 广度优先搜索(BFS) 关于递归(Recursion)详见:算法与数据结构基础 - 递归(Recursion) 树的遍历 DFS常用于二叉树的遍历,关于二叉树详见: 算法与数据结构基础 - 二叉查找树…

All LeetCode Questions List(Part of Answers, still updating) 题目汇总及部分答案(持续更新中) Leetcode problems classified by company 题目按公司分类(Last updated: October 2, 2017) .   Top Interview Questions # Title Difficulty Acceptance 1 Two Sum Medium 17.70% 2 Add Two N…

All LeetCode Questions List 题目汇总 Sorted by frequency of problems that appear in real interviews. Last updated: October 2, 2017Google (214)534 Design TinyURL388 Longest Absolute File Path683 K Empty Slots340 Longest Substring with At Most K Distinct C…