leetcode.com/problems/l leetcode.com/problems/s leetcode.com/problems/p leetcode.com/problems/d leetcode.com/problems/s leetcode.com/problems/m leetcode.com/problems/m leetcode.com/problems/m leetcode.com/problems/v leetcode.com/problems/s leetcode.com/problems/m leetcode...
dfs(graph, colors, nxt, -color) { return false } } // 此时当前联通子图点所有点都染色成功, // 即当前联通子图是一个二分图,返回 true return true } 题目链接: Is Graph Bipartite? : leetcode.com/problems/i 判断二分图: leetcode.cn/problems/is LeetCode 日更第 104 天,感谢阅读至此的你...
if (!dfs(graph, i, color)) return false; } return true; } private boolean dfs(List<Integer>[] graph, int node, int[] color) { for (int i = 0; i < graph[node].size(); i++) { //for every neighbor of current node int op = graph[node].get(i); if (color[op] == 0)...
原题链接在这里:https://leetcode.com/problems/is-graph-bipartite/ 题目: Given an undirectedgraph, returntrueif and only if it is bipartite. Recall that a graph isbipartiteif we can split it's set of nodes into two independent subsets A and B such that every edge in the graph has one ...
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...)...
https://leetcode.com/problems/minimum-height-trees/ 有trick 对graph不熟悉。再看几遍。 参考http://bookshadow.com/weblog/2015/11/26/leetcode-minimum-height-trees/ 基本思路是“逐层删去叶子节点,直到剩下根节点为止” 有点类似于拓扑排序
链表(Linked List) 栈(Stack) 队列(Queue) 散列表(Hash table) 堆(Heap) 树(Tree) 图(Graph) 数据结构的操作也无外乎增删改查: 查找 插入 删除 修改 排序 文章推荐: 蛋蛋惨遭数组滑铁卢,面试官建议回村养猪。 链表,画几下就整明白了! 呔!“栈”住,队列! 算法 学习算法的套路很简单,多看、多写、多上机...
https://leetcode.cn/problems/count-visited-nodes-in-a-directed-graph/description/ 问题分析 初步分析: 对于 个点 条边的有向弱连通图,图中每个点的出度都是 ,因此它是一棵「内向基环树」。那么,对于每个点有 种情况: 环上节点:绕环行走一圈后就会回到当前位置,因此最长访问路径就是环长; ...
Decode Ways - https://leetcode.com/problems/decode-ways/ Unique Paths - https://leetcode.com/problems/unique-paths/ Jump Game - https://leetcode.com/problems/jump-game/ Graph Clone Graph - https://leetcode.com/problems/clone-graph/ Course Schedule - https://leetcode.com/problems/course...
https://leetcode.cn/problems/count-of-interesting-subarrays/ 题解(同余 + 前缀和 + 散列表) 初步分析: 问题目标:统计数组中满足目标条件的子数组; 目标条件:在子数组范围 内,设 为满足 的索引 的数量,并且 。大白话就是算一下有多少数的模是 ...