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Problem 3: Leetcode 560 给定一个整数数组和一个整数 **k,**你需要找到该数组中和为 k 的连续的子数组的个数。 比方说输入是nums = [1,1,1], k = 2,那么输出就是2,这里要注意,子数组[1, 1]可能指的是前两个1,也有可能是后两个1,因此答案是2而不是1。 面对子数组的问题,前缀和是一个非常...
17. 电话号码的字母组合因为题解只有前几个有人看，后面肯定没人看。（如果一个题解注定没人会看，你觉得还会有人愿意写题解吗？）
AI代码解释 from collectionsimportdefaultdictclassSolution:defmaxPoints(self,points):""":type points:List[Point]:rtype:int""" slopes,result=defaultdict(int),0fori,point1inenumerate(points):slopes.clear()duplicate=1for_,point2inenumerate(points[i+1:]):ifpoint1.x==point2.x and point1.y==po...
The n-queens puzzle is the problem of placingnqueens on ann x nchessboard such that no two queens attack each other. Given an integern, returnthe number of distinct solutions to the n-queens puzzle. Example 1: Input: n = 4 Output: 2 ...
[dest_node]; } } } } return max_distance; } }; class Solution { public: vector<int> findMinHeightTrees(int n, vector<vector<int>>& edges) { if(n==1){ return vector<int>{0}; }else if(n==2){ return edges[0]; } Graph graph(n,edges); vector<int> result; int min_dist ...
本项目包含 LeetCode、《剑指 Offer(第 2 版)》、《剑指 Offer(专项突击版)》、《程序员面试金典(第 6 版)》等题目的相关题解。所有题解均由多种编程语言实现,包括但不限于:Java、Python、C++、Go、TypeScript、Rust。我们正在全力更新,欢迎 Star 🌟 关注本项目,获取项目最新动态。
The n-queens puzzle is the problem of placingnqueens on ann x nchessboard such that no two queens attack each other. Given an integern, returnall distinct solutions to the n-queens puzzle. You may return the answer in any order.
LeetCode-Problem-Sets Answers for the leetcode problems Solutions MAY vary with offical LeetCode Solutions. PLEASE do a pull request for more elegant solutions(New Issue Request Template, make sure to read it!). Tips for beginners: If you are spending too much time on a problem, look and ...
Given a binary tree, determine if it is height-balanced.For this problem, a height-balanced binary tree is defined as: a binary tree in which the depth of the two subtrees of every node never differ by more than 1. Example 1: Given the following tree [3,9,20,null,null,15,7]: 3...