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Topic: Union Find

71 problems
#TitleStatusDifficulty
128Longest Consecutive Sequence—Medium
130Surrounded Regions—Medium
200Number of Islands—Medium
261Graph Valid Tree—Medium
323Number of Connected Components in an Undirected Graphread—Medium
399Evaluate Divisionread—Medium
547Number of Provinces—Medium
684Redundant Connectionread—Medium
685Redundant Connection IIread—Hard
695Max Area of Island—Medium
721Accounts Merge—Medium
765Couples Holding Handsread—Hard
778Swim in Rising Waterread—Hard
785Is Graph Bipartite?read—Medium
803Bricks Falling When Hitread—Hard
827Making A Large Islandread—Hard
839Similar String Groupsread—Hard
886Possible Bipartitionread—Medium
924Minimize Malware Spreadread—Hard
928Minimize Malware Spread IIread—Hard
947Most Stones Removed with Same Row or Column—Medium
952Largest Component Size by Common Factorread—Hard
959Regions Cut By Slashesread—Medium
990Satisfiability of Equality Equations—Medium
1020Number of Enclavesread—Medium
1061Lexicographically Smallest Equivalent Stringread—Medium
1202Smallest String With Swapsread—Medium
1254Number of Closed Islandsread—Medium
1267Count Servers that Communicateread—Medium
1319Number of Operations to Make Network Connectedread—Medium
1361Validate Binary Tree Nodesread—Medium
1391Check if There is a Valid Path in a Gridread—Medium
1489Find Critical and Pseudo-Critical Edges in Minimum Spanning Treeread—Hard
1559Detect Cycles in 2D Gridread—Medium
1569Number of Ways to Reorder Array to Get Same BSTread—Hard
1579Remove Max Number of Edges to Keep Graph Fully Traversableread—Hard
1584Min Cost to Connect All Pointsread—Medium
1627Graph Connectivity With Thresholdread—Hard
1631Path With Minimum Effortread—Medium
1632Rank Transform of a Matrixread—Hard
1697Checking Existence of Edge Length Limited Pathsread—Hard
1722Minimize Hamming Distance After Swap Operationsread—Medium
1905Count Sub Islandsread—Medium
1970Last Day Where You Can Still Crossread—Hard
1971Find if Path Exists in Graphread—Easy
1998GCD Sort of an Arrayread—Hard
2003Smallest Missing Genetic Value in Each Subtreeread—Hard
2076Process Restricted Friend Requestsread—Hard
2092Find All People With Secretread—Hard
2157Groups of Stringsread—Hard
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