| 1460. Make Two Arrays Equal by Reversing Subarrays | | | Solve | Easy | | |
| 1464. Maximum Product of Two Elements in an Array | | | Solve | Easy | | |
| 1483. Kth Ancestor of a Tree Node | | | Solve | Hard | | |
| 1485. Clone Binary Tree With Random Pointer | | | Solve | Medium | | |
| 1489. Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree | | | Solve | Hard | | |
| 1498. Number of Subsequences That Satisfy the Given Sum Condition | | | Solve | Medium | | |
| 1522. Diameter of N-Ary Tree | | | Solve | Medium | | |
| 1539. Kth Missing Positive Number | | | Solve | Easy | | |
| 1541. Minimum Insertions to Balance a Parentheses String | | | Solve | Medium | | |
| 1547. Minimum Cost to Cut a Stick | | | Solve | Hard | | |
| 1557. Minimum Number of Vertices to Reach All Nodes | | | Solve | Medium | | |
| 1559. Detect Cycles in 2D Grid | | | Solve | Medium | | |
| 1570. Dot Product of Two Sparse Vectors | | | Solve | Medium | | |
| 1586. Binary Search Tree Iterator II | | | Solve | Medium | | |
| 1614. Maximum Nesting Depth of the Parentheses | | | Solve | Easy | | |
| 1640. Check Array Formation Through Concatenation | | | Solve | Easy | | |
| 1644. Lowest Common Ancestor of a Binary Tree II | | | Solve | Medium | | |
| 1650. Lowest Common Ancestor of a Binary Tree III | | | Solve | Medium | | |
| 1657. Determine if Two Strings Are Close | | | Solve | Medium | | |
| 1661. Average Time of Process per Machine | | | Solve | Easy | | |
| 1662. Check If Two String Arrays are Equivalent | | | Solve | Easy | | |
| 1699. Number of Calls Between Two Persons | | | Solve | Medium | | |
| 1718. Construct the Lexicographically Largest Valid Sequence | | | Solve | Medium | | |
| 1721. Swapping Nodes in a Linked List | | | Solve | Medium | | |
| 1740. Find Distance in a Binary Tree | | | Solve | Medium | | |
| 1748. Sum of Unique Elements | | | Solve | Easy | | |
| 1757. Recyclable and Low Fat Products | | | Solve | Easy | | |
| 1762. Buildings With an Ocean View | | | Solve | Medium | | |
| 1773. Count Items Matching a Rule | | | Solve | Easy | | |
| 1778. Shortest Path in a Hidden Grid | | | Solve | Medium | | |
| 1790. Check if One String Swap Can Make Strings Equal | | | Solve | Easy | | |
| 1810. Minimum Path Cost in a Hidden Grid | | | Solve | Medium | | |
| 1826. Faulty Sensor | | | Solve | Easy | | |
| 1832. Check if the Sentence Is Pangram | | | Solve | Easy | | |
| 1834. Single-Threaded CPU | | | Solve | Medium | | |
| 1868. Product of Two Run-Length Encoded Arrays | | | Solve | Medium | | |
| 1891. Cutting Ribbons | | | Solve | Medium | | |
| 1892. Page Recommendations II | | | Solve | Hard | | |
| 1901. Find a Peak Element II | | | Solve | Medium | | |
| 1909. Remove One Element to Make the Array Strictly Increasing | | | Solve | Easy | | |
| 1928. Minimum Cost to Reach Destination in Time | | | Solve | Hard | | |
| 1944. Number of Visible People in a Queue | | | Solve | Hard | | |
| 1947. Maximum Compatibility Score Sum | | | Solve | Medium | | |
| 1949. Strong Friendship | | | Solve | Medium | | |
| 1963. Minimum Number of Swaps to Make the String Balanced | | | Solve | Medium | | |
| 1973. Count Nodes Equal to Sum of Descendants | | | Solve | Medium | | |
| 1976. Number of Ways to Arrive at Destination | | | Solve | Medium | | |
| 1985. Find the Kth Largest Integer in the Array | | | Solve | Medium | | |
| 1991. Find the Middle Index in Array | | | Solve | Easy | | |
| 2014. Longest Subsequence Repeated k Times | | | Solve | Hard | | |
