转载:来自大佬https://leetcode-cn.com/problems/stone-game/solution/jie-jue-bo-yi-wen-ti-de-dong-tai-gui-hua-tong-yong/ 该问题主要是如何设计dp数组,其次是动态转移方程 1.dp数组设计 状态有三种:开始堆的索引i,结束堆的索引j,以及当前轮到的人 dp[i][j].fir 表示,对于 piles[i...j] 这部分...
st表是一种基于DP(动态规划)思想的算法,也算是一种数据结构吧。 st表可以静态维护区间的最值,需要用的时间来预处理,后可以O(1)查询。 我们定义dp[i][j]表示 表示区间的最值,在这道题里我们认为是最大值(维护最小值同理)。看一下能不能开下,大概是maxn * 20的大小,可以开下。 通过定义不难发现,dp...
This repository contains the solutions and explanations to the algorithm problems on LeetCode. Only medium or above are included. All are written in C++/Python and implemented by myself. The problems attempted multiple times are labelled with hyperlinks. Topics algorithms leetcode cpp Resources Re...
参考题解https://leetcode-cn.com/problems/find-all-good-strings/solution/shu-wei-dp-kmp-by-qodjf/ 国服现在好多大神…题解写的真的很棒~ cal 计算小于等于任意字符串 s 的数目,计算两次求差就可了。其中 s1 没有被计算,所以单独算一次即可。 dp[i][j][0]前i个字符 和evil有j个相同 并且已经小于...
LeetCode R.I.P. to my old Leetcode repository, where there were 5.7k+ stars and 2.2k+ forks (ever the top 3 in the field). Since free questions may be even mistakenly taken down by some companies, only solutions will be post on now. There are new LeetCode questions every week. I...
Count Square Submatrices with All Ones 统计全为 1 的正方形子矩阵 (DP) 题目 给你一个 m * n 的矩阵,矩阵中的元素不是 0 就是 1,请你统计并返回其中完全由 1 组成的 正方形 子矩阵的个数。 链接:https://leetcode.com/problems/count-square-submatrices-with-all-ones/ Given a m * n matrix...
关于上述代码的解析可参考力扣题解:https://leetcode-cn.com/problems/edit-distance/solution/bian-ji-ju-chi-by-leetcode-solution/ 遍历每个被查找的名称,计算它与数据库所有客户名称的编辑距离,并取编辑距离最小的客户名称: result = [] for name in find.name.values: ...
绿色即为后缀 <题目来自于力扣https://leetcode-cn.com/problems/all-paths-from-source-to-target人脸...
绿色即为后缀 <题目来自于力扣https://leetcode-cn.com/problems/all-paths-from-source-to-target人脸...
4. 5. 6. 7. 8. 9. 10. 11. Example 2: Input: mat = [[0,1,1,0], [0,1,1,1], [1,1,1,0]] Output: 24 Explanation: There are 8 rectangles of side 1x1. There are 5 rectangles of side 1x2. There are 2 rectangles of side 1x3. ...