| 2001. Number of Pairs of Interchangeable Rectangles | Solution | Solve | Medium | | |
| 2002. Maximum Product of the Length of Two Palindromic Subsequences | Solution | Solve | Medium | | |
| 2003. Smallest Missing Genetic Value in Each Subtree | Solution | Solve | Hard | - | |
| 2004. The Number of Seniors and Juniors to Join the Company | Solution | Solve | Hard | - | |
| 2005. Subtree Removal Game with Fibonacci Tree | Solution | Solve | Hard | | |
| 2006. Count Number of Pairs With Absolute Difference K | Solution | Solve | Easy | | |
| 2007. Find Original Array From Doubled Array | Solution | Solve | Medium | | |
| 2008. Maximum Earnings From Taxi | Solution | Solve | Medium | | |
| 2009. Minimum Number of Operations to Make Array Continuous | Solution | Solve | Hard | | |
| 2010. The Number of Seniors and Juniors to Join the Company II | Solution | Solve | Hard | - | |
| 2011. Final Value of Variable After Performing Operations | Solution | Solve | Easy | | |
| 2012. Sum of Beauty in the Array | Solution | Solve | Medium | | |
| 2013. Detect Squares | Solution | Solve | Medium | | |
| 2014. Longest Subsequence Repeated k Times | Solution | Solve | Hard | | |
| 2015. Average Height of Buildings in Each Segment | Solution | Solve | Medium | | |
| 2016. Maximum Difference Between Increasing Elements | Solution | Solve | Easy | | |
| 2017. Grid Game | Solution | Solve | Medium | | |
| 2018. Check if Word Can Be Placed In Crossword | Solution | Solve | Medium | | |
| 2019. The Score of Students Solving Math Expression | Solution | Solve | Hard | | |
| 2020. Number of Accounts That Did Not Stream | Solution | Solve | Medium | | |
| 2021. Brightest Position on Street | Solution | Solve | Medium | | |
| 2022. Convert 1D Array Into 2D Array | Solution | Solve | Easy | | |
| 2023. Number of Pairs of Strings With Concatenation Equal to Target | Solution | Solve | Medium | | |
| 2024. Maximize the Confusion of an Exam | Solution | Solve | Medium | | |
| 2025. Maximum Number of Ways to Partition an Array | Solution | Solve | Hard | | |
| 2026. Low-Quality Problems | Solution | Solve | Easy | - | |
| 2027. Minimum Moves to Convert String | Solution | Solve | Easy | | |
| 2028. Find Missing Observations | Solution | Solve | Medium | | |
| 2029. Stone Game IX | Solution | Solve | Medium | | |
| 2030. Smallest K-Length Subsequence With Occurrences of a Letter | Solution | Solve | Hard | | |
| 2031. Count Subarrays With More Ones Than Zeros | Solution | Solve | Medium | | |
| 2032. Two Out of Three | Solution | Solve | Easy | | |
| 2033. Minimum Operations to Make a Uni-Value Grid | Solution | Solve | Medium | | |
| 2034. Stock Price Fluctuation | Solution | Solve | Medium | | |
| 2035. Partition Array Into Two Arrays to Minimize Sum Difference | Solution | Solve | Hard | | |
| 2036. Maximum Alternating Subarray Sum | Solution | Solve | Medium | | |
| 2037. Minimum Number of Moves to Seat Everyone | Solution | Solve | Easy | | |
| 2038. Remove Colored Pieces if Both Neighbors are the Same Color | Solution | Solve | Medium | | |
| 2039. The Time When the Network Becomes Idle | Solution | Solve | Medium | | |
| 2040. Kth Smallest Product of Two Sorted Arrays | Solution | Solve | Hard | | |
| 2041. Accepted Candidates From the Interviews | Solution | Solve | Medium | - | |
| 2042. Check if Numbers Are Ascending in a Sentence | Solution | Solve | Easy | - | |
| 2043. Simple Bank System | Solution | Solve | Medium | | |
| 2044. Count Number of Maximum Bitwise-OR Subsets | Solution | Solve | Medium | | |
| 2045. Second Minimum Time to Reach Destination | Solution | Solve | Hard | | |
| 2046. Sort Linked List Already Sorted Using Absolute Values | Solution | Solve | Medium | - | |
| 2047. Number of Valid Words in a Sentence | Solution | Solve | Easy | | |
| 2048. Next Greater Numerically Balanced Number | Solution | Solve | Medium | | |
| 2049. Count Nodes With the Highest Score | Solution | Solve | Medium | | |
| 2050. Parallel Courses III | Solution | Solve | Hard | | |
