| 1601. Maximum Number of Achievable Transfer Requests | Solution | Solve | Hard | | |
| 1602. Find Nearest Right Node in Binary Tree | Solution | Solve | Medium | | |
| 1603. Design Parking System | Solution | Solve | Easy | | |
| 1604. Alert Using Same Key-Card Three or More Times in a One Hour Period | Solution | Solve | Medium | | |
| 1605. Find Valid Matrix Given Row and Column Sums | Solution | Solve | Medium | | |
| 1606. Find Servers That Handled Most Number of Requests | Solution | Solve | Hard | | |
| 1607. Sellers With No Sales | Solution | Solve | Easy | - | |
| 1608. Special Array With X Elements Greater Than or Equal X | Solution | Solve | Easy | | |
| 1609. Even Odd Tree | Solution | Solve | Medium | | |
| 1610. Maximum Number of Visible Points | Solution | Solve | Hard | | |
| 1611. Minimum One Bit Operations to Make Integers Zero | Solution | Solve | Hard | | |
| 1612. Check If Two Expression Trees are Equivalent | Solution | Solve | Medium | | |
| 1613. Find the Missing IDs | Solution | Solve | Medium | | |
| 1614. Maximum Nesting Depth of the Parentheses | Solution | Solve | Easy | | |
| 1615. Maximal Network Rank | Solution | Solve | Medium | | |
| 1616. Split Two Strings to Make Palindrome | Solution | Solve | Medium | | |
| 1617. Count Subtrees With Max Distance Between Cities | Solution | Solve | Hard | - | |
| 1618. Maximum Font to Fit a Sentence in a Screen | Solution | Solve | Medium | | |
| 1619. Mean of Array After Removing Some Elements | Solution | Solve | Easy | | |
| 1620. Coordinate With Maximum Network Quality | Solution | Solve | Medium | | |
| 1621. Number of Sets of K Non-Overlapping Line Segments | Solution | Solve | Medium | | |
| 1622. Fancy Sequence | Solution | Solve | Hard | | |
| 1623. All Valid Triplets That Can Represent a Country | Solution | Solve | Easy | | |
| 1624. Largest Substring Between Two Equal Characters | Solution | Solve | Easy | | |
| 1625. Lexicographically Smallest String After Applying Operations | Solution | Solve | Medium | | |
| 1626. Best Team With No Conflicts | Solution | Solve | Medium | | |
| 1627. Graph Connectivity With Threshold | Solution | Solve | Hard | | |
| 1628. Design an Expression Tree With Evaluate Function | Solution | Solve | Medium | | |
| 1629. Slowest Key | Solution | Solve | Easy | | |
| 1630. Arithmetic Subarrays | Solution | Solve | Medium | | |
| 1631. Path With Minimum Effort | Solution | Solve | Medium | | |
| 1632. Rank Transform of a Matrix | Solution | Solve | Hard | | |
| 1633. Percentage of Users Attended a Contest | Solution | Solve | Easy | | |
| 1634. Add Two Polynomials Represented as Linked Lists | Solution | Solve | Medium | | |
| 1635. Hopper Company Queries I | Solution | Solve | Hard | | |
| 1636. Sort Array by Increasing Frequency | Solution | Solve | Easy | | |
| 1637. Widest Vertical Area Between Two Points Containing No Points | Solution | Solve | Easy | | |
| 1638. Count Substrings That Differ by One Character | Solution | Solve | Medium | | |
| 1639. Number of Ways to Form a Target String Given a Dictionary | Solution | Solve | Hard | | |
| 1640. Check Array Formation Through Concatenation | Solution | Solve | Easy | - | |
| 1641. Count Sorted Vowel Strings | Solution | Solve | Medium | | |
| 1642. Furthest Building You Can Reach | Solution | Solve | Medium | | |
| 1643. Kth Smallest Instructions | Solution | Solve | Hard | | |
| 1644. Lowest Common Ancestor of a Binary Tree II | Solution | Solve | Medium | | |
| 1645. Hopper Company Queries II | Solution | Solve | Hard | | |
| 1646. Get Maximum in Generated Array | Solution | Solve | Easy | | |
| 1647. Minimum Deletions to Make Character Frequencies Unique | Solution | Solve | Medium | | |
| 1648. Sell Diminishing-Valued Colored Balls | Solution | Solve | Medium | | |
| 1649. Create Sorted Array through Instructions | Solution | Solve | Hard | | |
| 1650. Lowest Common Ancestor of a Binary Tree III | Solution | Solve | Medium | | |
