| 1137. N-th Tribonacci Number | | | Solve | Easy | | |
| 1144. Decrease Elements To Make Array Zigzag | | | Solve | Medium | | |
| 1148. Article Views I | | | Solve | Easy | | |
| 1161. Maximum Level Sum of a Binary Tree | | | Solve | Medium | | |
| 1188. Design Bounded Blocking Queue | | | Solve | Medium | | |
| 1189. Maximum Number of Balloons | | | Solve | Easy | | |
| 1191. K-Concatenation Maximum Sum | | | Solve | Medium | | |
| 1192. Critical Connections in a Network | | | Solve | Hard | | |
| 1193. Monthly Transactions I | | | Solve | Medium | | |
| 1207. Unique Number of Occurrences | | | Solve | Easy | | |
| 1217. Minimum Cost to Move Chips to The Same Position | | | Solve | Easy | | |
| 1221. Split a String in Balanced Strings | | | Solve | Easy | | |
| 1228. Missing Number In Arithmetic Progression | | | Solve | Easy | | |
| 1229. Meeting Scheduler | | | Solve | Medium | | |
| 1235. Maximum Profit in Job Scheduling | | | Solve | Hard | | |
| 1239. Maximum Length of a Concatenated String with Unique Characters | | | Solve | Medium | | |
| 1248. Count Number of Nice Subarrays | | | Solve | Medium | | |
| 1249. Minimum Remove to Make Valid Parentheses | | | Solve | Medium | | |
| 1251. Average Selling Price | | | Solve | Easy | | |
| 1268. Search Suggestions System | | | Solve | Medium | | |
| 1270. All People Report to the Given Manager | | | Solve | Medium | | |
| 1312. Minimum Insertion Steps to Make a String Palindrome | | | Solve | Hard | | |
| 1326. Minimum Number of Taps to Open to Water a Garden | | | Solve | Hard | | |
| 1356. Sort Integers by The Number of 1 Bits | | | Solve | Easy | | |
| 1358. Number of Substrings Containing All Three Characters | | | Solve | Medium | | |
| 1378. Replace Employee ID With The Unique Identifier | | | Solve | Easy | | |
| 1401. Circle and Rectangle Overlapping | | | Solve | Medium | | |
| 1423. Maximum Points You Can Obtain from Cards | | | Solve | Medium | | |
| 1483. Kth Ancestor of a Tree Node | | | Solve | Hard | | |
| 1484. Group Sold Products By The Date | | | Solve | Easy | | |
| 1489. Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree | | | Solve | Hard | | |
| 1512. Number of Good Pairs | | | Solve | Easy | | |
| 1523. Count Odd Numbers in an Interval Range | | | Solve | Easy | | |
| 1531. String Compression II | | | Solve | Hard | | |
| 1544. Make The String Great | | | Solve | Easy | | |
| 1567. Maximum Length of Subarray With Positive Product | | | Solve | Medium | | |
| 1581. Customer Who Visited but Did Not Make Any Transactions | | | Solve | Easy | | |
| 1588. Sum of All Odd Length Subarrays | | | Solve | Easy | | |
| 1601. Maximum Number of Achievable Transfer Requests | | | Solve | Hard | | |
| 1626. Best Team With No Conflicts | | | Solve | Medium | | |
| 1648. Sell Diminishing-Valued Colored Balls | | | Solve | Medium | | |
| 1653. Minimum Deletions to Make String Balanced | | | Solve | Medium | | |
| 1658. Minimum Operations to Reduce X to Zero | | | Solve | Medium | | |
| 1661. Average Time of Process per Machine | | | Solve | Easy | | |
| 1663. Smallest String With A Given Numeric Value | | | Solve | Medium | | |
| 1667. Fix Names in a Table | | | Solve | Easy | | |
| 1672. Richest Customer Wealth | | | Solve | Easy | | |
| 1683. Invalid Tweets | | | Solve | Easy | | |
| 1685. Sum of Absolute Differences in a Sorted Array | | | Solve | Medium | | |
| 1688. Count of Matches in Tournament | | | Solve | Easy | | |