996.Number-of-Squareful-Arrays (H-) 1307.Verbal-Arithmetic-Puzzle (H) 1593.Split-a-String-Into-the-Max-Number-of-Unique-Substrings (M) 1681.Minimum-Incompatibility (H) 1723.Find-Minimum-Time-to-Finish-All-Jobs (H-) 2305.Fair-Distribution-of-Cookies (H-) 2597.The-Number-of-Beautiful-Su...
https://leetcode.cn/problems/check-if-an-original-string-exists-given-two-encoded-strings/ 字符串压缩码由于长度大于9时截断会出错,这道题正确的状态定义是s1的前i个字符,s2取前j个字符,同时有一个字符没匹配上的字符数量是k(可以用k的正负性表示是哪边没匹配上),附加维度不可删除。状态转移的细节也相当...
Explanation: Buy on day 2 (price = 1) and sell on day 3 (price = 5), profit = 5-1 = 4. Then buy on day 4 (price = 3) and sell on day 5 (price = 6), profit = 6-3 = 3. Total profit is 4 + 3 = 7. Key Point: Just focus on each day. You can buy and sell on...
This app displays all practical coding problems from leetcode.com, and provids the solutions. Available on Apple Store: Not available anymore. Wechat Reward If you like this project and want to sponsor the author, you can reward the author using Wechat by scanning the following QR code. Or...
二：137. 只出现一次的数字 IIleetcode-cn.com/problems/single-number-ii/?utm_campaign=lcsocial...
Let's define a functionf(s)over a non-empty strings, which calculates the frequency of the smallest character ins. For example, ifs = "dcce"thenf(s) = 2because the smallest character is"c"and its frequency is 2. Now, given string arraysqueriesandwords, return an integer arrayanswer, ...
Updated on 9/22/2017 如今回头看来,里面很多做法都不是最佳的,有的从复杂度上根本就不是最优解,有的写的太啰嗦,有的则用了一些过于 tricky 的方法。我没有为了这个再更新,就让它们去吧。 LeetCode 的题目是不断在更新。还是老规矩,跳过了那些需要付费才能做的题目。下面的解法可能不是最好的,具体问题我...
Given two integer arrays A and B, return the maximum length of an subarray that appears in both arrays. Example 1: Input: A: [1,2,3,2,1] B: [3,2,1,4,7
下面的思路借鉴自讨论区(https://leetcode.com/problems/maximum-xor-of-two-numbers-in-an-array/discuss/91049/Java-O(n%29-solution-using-bit-manipulation-and-HashMap)的一个解法。现在 Medium 的题目居然也需要看解答了,叹气。 代码语言:javascript 代码运行次数:0 运行 复制 class Solution { public int...
2.Sliding Window(Arrays, Strings, Hash Tables) Sliding Window covers most of the problems related to top data structures like Arrays, Strings, and HashTables. 3.Tree and Graph Depth First Search(Matrix Traversal) Most Trees and Graphs problems can be solved using Depth First Search (DFS). ...