Let’s check the problem:https://leetcode.com/problems/keys-and-rooms/. We realized that we can solve this using a graph and DFS, but how? Instead of simple rooms, we have a graph here. We can start at position
because we know that this graph is possibly not One graph), and on our way to tranverse other node, we assign this node with group number(1 or -1), when we find a node is “dislike
https://leetcode-cn.com/problems/number-of-connected-components-in-an-undirected-graph/ Given n nodes labeled from 0 to n - 1 and a list of undirected edges (each edge is a pair of nodes), write a function to find the number of connected components in an undirected graph. 给定编号从 ...
These problems may require you to implement a given interface of a class, and may involve using one or more data structures. These are great exercises to improve your data structure skills. We recommend: LRU Cache, Implement Trie (Prefix Tree) and Find Median from Data Stream. ...
https://leetcode.com/problems/permutation-in-string/ https://leetcode.com/problems/count-unique-...
N/A Find the Connected Component in the Undirected Graph.java Medium [BFS, DFS] Java 177 N/A Implement Stack.java Easy [Stack] Java 178 N/A Number of Airplane in the sky.java Medium [Array, Interval, PriorityQueue, Sort, Sweep Line] Java 179 N/A Surrounded Regions.java Medium [BFS,...
Math Binary_Index_Tree Segment Tree Inverse_Element Graph Bit_Manipulation RB_Tree 二维子矩阵求和 二维差分数组 CPP_LANG SQLAbout 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 imple...
https://leetcode.com/problems/is-graph-bipartite/discuss/115487/Java-Clean-DFS-solution-with-Explanation https://leetcode.com/problems/is-graph-bipartite/discuss/115723/C++-short-iterative-solution-with-comments LeetCode All in One 题目讲解汇总(持续更新中...)...
graph[a.first][cur] -=min(move, a.second); res +=min(move, a.second); } }returnres; } }; Github 同步地址: https://github.com/grandyang/leetcode/issues/882 参考资料: https://leetcode.com/problems/reachable-nodes-in-subdivided-graph/ ...
// Solution 1: Problems as such, that put restrictions on data range and index range and focus on counting, can be solved with BIT. Use a hash table to map a discretized sequence to a consecutive one. 代码1 //Code 1 316 Remove Duplicate Letters ...