| 1202 | Smallest String With Swaps | Medium |
| 1203 | Sort Items by Groups Respecting Dependencies | Hard |
| 1210 | Minimum Moves to Reach Target with Rotations | Hard |
| 1254 | Number of Closed Islands | Medium |
| 1261 | Find Elements in a Contaminated Binary Tree | Medium |
| 1263 | Minimum Moves to Move a Box to Their Target Location | Hard |
| 1267 | Count Servers that Communicate | Medium |
| 1284 | Minimum Number of Flips to Convert Binary Matrix to Zero Matrix | Hard |
| 1293 | Shortest Path in a Grid with Obstacles Elimination | Hard |
| 1298 | Maximum Candies You Can Get from Boxes | Hard |
| 1302 | Deepest Leaves Sum | Medium |
| 1306 | Jump Game III | Medium |
| 1311 | Get Watched Videos by Your Friends | Medium |
| 1315 | Sum of Nodes with Even-Valued Grandparent | Medium |
| 1319 | Number of Operations to Make Network Connected | Medium |
| 1345 | Jump Game IV | Hard |
| 1361 | Validate Binary Tree Nodes | Medium |
| 1367 | Linked List in Binary Tree | Medium |
| 1368 | Minimum Cost to Make at Least One Valid Path in a Grid | Hard |
| 1376 | Time Needed to Inform All Employees | Medium |
| 1377 | Frog Position After T Seconds | Hard |
| 1379 | Find a Corresponding Node of a Binary Tree in a Clone of That Tree | Easy |
| 1391 | Check if There is a Valid Path in a Grid | Medium |
| 1443 | Minimum Time to Collect All Apples in a Tree | Medium |
| 1448 | Count Good Nodes in Binary Tree | Medium |
| 1457 | Pseudo-Palindromic Paths in a Binary Tree | Medium |
| 1462 | Course Schedule IV | Medium |
| 1466 | Reorder Routes to Make All Paths Lead to the City Zero | Medium |
| 1483 | Kth Ancestor of a Tree Node | Hard |
| 1519 | Number of Nodes in the Sub-Tree With the Same Label | Medium |