Can you solve this real interview question? Shortest Path Visiting All Nodes - You have an undirected, connected graph of n nodes labeled from 0 to n - 1. You are given an array graph where graph[i] is a list of all the nodes connected with node i by an
设计最短路径 用bfs 天然带最短路径 每一个状态是 当前的阶段 和已经访问过的节点 下面是正确但是超时的代码 classSolution:defshortestPathLength(self, graph):""" :type graph: List[List[int]] :rtype: int """N=len(graph) Q=collections.deque([(1<< x, x)forxinrange(N)]) D=collections.de...
原题链接在这里:https://leetcode.com/problems/shortest-path-to-get-all-keys/description/ 题目: You are given anm x ngridgridwhere: '.'is an empty cell. '#'is a wall. '@'is the starting point. Lowercase letters represent keys. Uppercase letters represent locks. You start at the starti...
pair<int, int> BFS(const vector<string>& grid, int x, int y, string keysSeached, char curKey, int& len) { if(x < 0 || y < 0 || x >= grid.size() || y >= grid[x].size()) { return {-1, -1}; } // 标记走过的路径 vector<string> gridFlag(grid); gridFlag[x][y...
int shortestPathLength(vector<vector<int>>& graph) { const int n = graph.size(); const int kAns = (1 << n) - 1; queue<pair<int, int>> q; vector<vector<int>> visited(n, vector<int>(1 << n)); for (int i = 0; i < n; ++i) q.push({i, 1 << i}); int steps =...
719.Find-Kth-Smallest-Pair-Distance (H-) 1918.Kth-Smallest-Subarray-Sum (M+) 2040.Kth-Smallest-Product-of-Two-Sorted-Arrays (H-) 1439.Find-the-Kth-Smallest-Sum-of-a-Matrix-With-Sorted-Rows (H) 786.Kth-Smallest-Prime-Fraction (H-) 793.Preimage-Size-of-Factorial-Zeroes-Function (H-)...
First, we'll run Dijkstra in the original graph and find the shortest path from vertex 1 to vertex n. Let call it minimum_path. Define the cost of each edge is a pair {0, original_weight}. We'll run Dijkstra until the minimum cost it takes from vertex 1 to n is {x, minimum_pa...
646. Maximum Length of Pair Chain Medium 这个就是最多能看多少个电视节目的问题,使用的是贪心法,策略是优先选择结束时间早的项目 /fuxuemingzhu/article/details/79826524 328. Odd Even Linked List Medium 先分别构建偶数位置的链表和奇数位置的链表,把对应位置的结果放到对应位置之后,再拼接即可 /fuxuemingzhu/...
LeetCode All In One English | 简体中文 Provide all my solutions and explanations in Chinese for all the Leetcode coding problems. Same as this: LeetCode All in One 题目讲解汇总(持续更新中...) Click below image to watch YouTube Video Note: All explanations are written in Github Issues, ...
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