101 | Symmetric Tree | Easy |
102 | Binary Tree Level Order Traversal | Medium |
103 | Binary Tree Zigzag Level Order Traversal | Medium |
107 | Binary Tree Level Order Traversal II | Easy |
111 | Minimum Depth of Binary Tree | Easy |
126 | Word Ladder II | Hard |
127 | Word Ladder | Medium |
130 | Surrounded Regions | Medium |
133 | Clone Graph | Medium |
199 | Binary Tree Right Side View | Medium |
200 | Number of Islands | Medium |
207 | Course Schedule | Medium |
210 | Course Schedule II | Medium |
310 | Minimum Height Trees | Medium |
513 | Find Bottom Left Tree Value | Medium |
514 | Freedom Trail | Hard |
515 | Find Largest Value in Each Tree Row | Medium |
542 | 01 Matrix | Medium |
752 | Open the Lock | Medium |
785 | Is Graph Bipartite? | Medium |
787 | Cheapest Flights Within K Stops | Medium |
802 | Find Eventual Safe States | Medium |
815 | Bus Routes | Hard |
863 | All Nodes Distance K in Binary Tree | Medium |
959 | Regions Cut By Slashes | Medium |
967 | Numbers With Same Consecutive Differences | Medium |
1042 | Flower Planting With No Adjacent | Medium |
1361 | Validate Binary Tree Nodes | Medium |
1443 | Minimum Time to Collect All Apples in a Tree | Medium |
1457 | Pseudo-Palindromic Paths in a Binary Tree | Medium |