| 874. Walking Robot Simulation | | | Solve | Medium | | |
| 889. Construct Binary Tree from Preorder and Postorder Traversal | | | Solve | Medium | | |
| 890. Find and Replace Pattern | | | Solve | Medium | | |
| 893. Groups of Special-Equivalent Strings | | | Solve | Medium | | |
| 904. Fruit Into Baskets | | | Solve | Medium | | |
| 911. Online Election | | | Solve | Medium | | |
| 916. Word Subsets | | | Solve | Medium | | |
| 923. 3Sum With Multiplicity | | | Solve | Medium | | |
| 930. Binary Subarrays With Sum | | | Solve | Medium | | |
| 939. Minimum Area Rectangle | | | Solve | Medium | | |
| 947. Most Stones Removed with Same Row or Column | | | Solve | Medium | | |
| 954. Array of Doubled Pairs | | | Solve | Medium | | |
| 957. Prison Cells After N Days | | | Solve | Medium | | |
| 959. Regions Cut By Slashes | | | Solve | Medium | | |
| 966. Vowel Spellchecker | | | Solve | Medium | | |
| 970. Powerful Integers | | | Solve | Medium | | |
| 974. Subarray Sums Divisible by K | | | Solve | Medium | | |
| 981. Time Based Key-Value Store | | | Solve | Medium | | |
| 1010. Pairs of Songs With Total Durations Divisible by 60 | | | Solve | Medium | | |
| 1015. Smallest Integer Divisible by K | | | Solve | Medium | | |
| 1027. Longest Arithmetic Subsequence | | | Solve | Medium | | |
| 1048. Longest String Chain | | | Solve | Medium | | |
| 1054. Distant Barcodes | | | Solve | Medium | | |
| 1072. Flip Columns For Maximum Number of Equal Rows | | | Solve | Medium | - | |
| 1079. Letter Tile Possibilities | | | Solve | Medium | | |
| 1090. Largest Values From Labels | | | Solve | Medium | | |
| 1100. Find K-Length Substrings With No Repeated Characters | | | Solve | Medium | | |
| 1110. Delete Nodes And Return Forest | | | Solve | Medium | | |
| 1123. Lowest Common Ancestor of Deepest Leaves | | | Solve | Medium | | |
| 1124. Longest Well-Performing Interval | | | Solve | Medium | | |
| 1138. Alphabet Board Path | | | Solve | Medium | | |
| 1146. Snapshot Array | | | Solve | Medium | | |
| 1152. Analyze User Website Visit Pattern | | | Solve | Medium | | |
| 1156. Swap For Longest Repeated Character Substring | | | Solve | Medium | | |
| 1166. Design File System | | | Solve | Medium | | |
| 1169. Invalid Transactions | | | Solve | Medium | | |
| 1170. Compare Strings by Frequency of the Smallest Character | | | Solve | Medium | | |
| 1171. Remove Zero Sum Consecutive Nodes from Linked List | | | Solve | Medium | | |
| 1177. Can Make Palindrome from Substring | | | Solve | Medium | | |
| 1181. Before and After Puzzle | | | Solve | Medium | | |
| 1198. Find Smallest Common Element in All Rows | | | Solve | Medium | | |
| 1202. Smallest String With Swaps | | | Solve | Medium | | |
| 1218. Longest Arithmetic Subsequence of Given Difference | | | Solve | Medium | | |
| 1244. Design A Leaderboard | | | Solve | Medium | | |
| 1248. Count Number of Nice Subarrays | | | Solve | Medium | | |
| 1257. Smallest Common Region | | | Solve | Medium | | |
| 1258. Synonymous Sentences | | | Solve | Medium | | |
| 1261. Find Elements in a Contaminated Binary Tree | | | Solve | Medium | | |
| 1282. Group the People Given the Group Size They Belong To | | | Solve | Medium | | |
| 1296. Divide Array in Sets of K Consecutive Numbers | | | Solve | Medium | | |
