| 128. Longest Consecutive Sequence | | | Solve | Medium | | |
| 130. Surrounded Regions | | | Solve | Medium | | |
| 200. Number of Islands | | | Solve | Medium | | |
| 261. Graph Valid Tree | | | Solve | Medium | | |
| 323. Number of Connected Components in an Undirected Graph | | | Solve | Medium | | |
| 399. Evaluate Division | | | Solve | Medium | | |
| 547. Number of Provinces | | | Solve | Medium | | |
| 684. Redundant Connection | | | Solve | Medium | | |
| 694. Number of Distinct Islands | | | Solve | Medium | | |
| 695. Max Area of Island | | | Solve | Medium | | |
| 721. Accounts Merge | | | Solve | Medium | | |
| 737. Sentence Similarity II | | | Solve | Medium | | |
| 785. Is Graph Bipartite? | | | Solve | Medium | | |
| 886. Possible Bipartition | | | Solve | Medium | | |
| 947. Most Stones Removed with Same Row or Column | | | Solve | Medium | | |
| 959. Regions Cut By Slashes | | | Solve | Medium | | |
| 990. Satisfiability of Equality Equations | | | Solve | Medium | | |
| 1020. Number of Enclaves | | | Solve | Medium | | |
| 1061. Lexicographically Smallest Equivalent String | | | Solve | Medium | | |
| 1101. The Earliest Moment When Everyone Become Friends | | | Solve | Medium | | |
| 1102. Path With Maximum Minimum Value | | | Solve | Medium | | |
| 1135. Connecting Cities With Minimum Cost | | | Solve | Medium | | |
| 1202. Smallest String With Swaps | | | Solve | Medium | | |
| 1254. Number of Closed Islands | | | Solve | Medium | | |
| 1258. Synonymous Sentences | | | Solve | Medium | | |
| 1267. Count Servers that Communicate | | | Solve | Medium | | |
| 1319. Number of Operations to Make Network Connected | | | Solve | Medium | | |
| 1361. Validate Binary Tree Nodes | | | Solve | Medium | | |
| 1391. Check if There is a Valid Path in a Grid | | | Solve | Medium | | |
| 1559. Detect Cycles in 2D Grid | | | Solve | Medium | | |
| 1584. Min Cost to Connect All Points | | | Solve | Medium | | |
| 1631. Path With Minimum Effort | | | Solve | Medium | | |
| 1722. Minimize Hamming Distance After Swap Operations | | | Solve | Medium | | |
| 1905. Count Sub Islands | | | Solve | Medium | | |
| 2316. Count Unreachable Pairs of Nodes in an Undirected Graph | | | Solve | Medium | | |
| 2368. Reachable Nodes With Restrictions | | | Solve | Medium | | |
| 2424. Longest Uploaded Prefix | | | Solve | Medium | | |
| 2492. Minimum Score of a Path Between Two Cities | | | Solve | Medium | | |
| 2658. Maximum Number of Fish in a Grid | | | Solve | Medium | | |
| 2685. Count the Number of Complete Components | | | Solve | Medium | - | |
| 2782. Number of Unique Categories | | | Solve | Medium | | |
| 2812. Find the Safest Path in a Grid | | | Solve | Medium | | |
| 2852. Sum of Remoteness of All Cells | | | Solve | Medium | | |
| 2948. Make Lexicographically Smallest Array by Swapping Elements | | | Solve | Medium | | |
