| 2938 | Separate Black and White Balls | Two PointersStringGreedy | Medium |
| 2939 | Maximum Xor Product | MathGreedyBit Manipulation | Medium |
| 2943 | Maximize Area of Square Hole in Grid | ArraySorting | Medium |
| 2944 | Minimum Number of Coins for Fruits | ArrayDynamic ProgrammingQueue+2 | Medium |
| 2947 | Count Beautiful Substrings I | Hash TableMathString+3 | Medium |
| 2948 | Make Lexicographically Smallest Array by Swapping Elements | ArrayUnion FindSorting | Medium |
| 2952 | Minimum Number of Coins to be Added | ArrayGreedySorting | Medium |
| 2957 | Remove Adjacent Almost-Equal Characters | StringDynamic ProgrammingGreedy | Medium |
| 2958 | Length of Longest Subarray With at Most K Frequency | ArrayHash TableSliding Window | Medium |
| 2961 | Double Modular Exponentiation | ArrayMathSimulation | Medium |
| 2962 | Count Subarrays Where Max Element Appears at Least K Times | ArraySliding Window | Medium |
| 2966 | Divide Array Into Arrays With Max Difference | ArrayGreedySorting | Medium |
| 2967 | Minimum Cost to Make Array Equalindromic | ArrayMathBinary Search+2 | Medium |
| 2971 | Find Polygon With the Largest Perimeter | ArrayGreedySorting+1 | Medium |
| 2975 | Maximum Square Area by Removing Fences From a Field | ArrayHash TableEnumeration | Medium |
| 2976 | Minimum Cost to Convert String I | ArrayStringGraph+1 | Medium |
| 2981 | Find Longest Special Substring That Occurs Thrice I | Hash TableStringBinary Search+2 | Medium |
| 2982 | Find Longest Special Substring That Occurs Thrice II | Hash TableStringBinary Search+2 | Medium |
| 2997 | Minimum Number of Operations to Make Array XOR Equal to K | ArrayBit Manipulation | Medium |
| 2998 | Minimum Number of Operations to Make X and Y Equal | Dynamic ProgrammingBreadth-First SearchMemoization | Medium |
| 3001 | Minimum Moves to Capture The Queen | MathEnumeration | Medium |
| 3002 | Maximum Size of a Set After Removals | ArrayHash TableGreedy | Medium |
| 3006 | Find Beautiful Indices in the Given Array I | Two PointersStringBinary Search+3 | Medium |
| 3007 | Maximum Number That Sum of the Prices Is Less Than or Equal to K | Binary SearchDynamic ProgrammingBit Manipulation | Medium |
| 3011 | Find if Array Can Be Sorted | ArrayBit ManipulationSorting | Medium |
| 3012 | Minimize Length of Array Using Operations | ArrayMathGreedy+1 | Medium |
| 3015 | Count the Number of Houses at a Certain Distance I | Breadth-First SearchGraphPrefix Sum | Medium |
| 3016 | Minimum Number of Pushes to Type Word II | Hash TableStringGreedy+2 | Medium |
| 3020 | Find the Maximum Number of Elements in Subset | ArrayHash TableEnumeration | Medium |
| 3021 | Alice and Bob Playing Flower Game | Math | Medium |
| 3025 | Find the Number of Ways to Place People I | ArrayMathGeometry+2 | Medium |
| 3026 | Maximum Good Subarray Sum | ArrayHash TablePrefix Sum | Medium |
| 3029 | Minimum Time to Revert Word to Initial State I | StringRolling HashString Matching+1 | Medium |
| 3030 | Find the Grid of Region Average | ArrayMatrix | Medium |
| 3034 | Number of Subarrays That Match a Pattern I | ArrayRolling HashString Matching+1 | Medium |
| 3035 | Maximum Palindromes After Operations | ArrayHash TableString+3 | Medium |
| 3039 | Apply Operations to Make String Empty | ArrayHash TableSorting+1 | Medium |
| 3040 | Maximum Number of Operations With the Same Score II | ArrayDynamic ProgrammingMemoization | Medium |
| 3043 | Find the Length of the Longest Common Prefix | ArrayHash TableString+1 | Medium |
| 3044 | Most Frequent Prime | ArrayHash TableMath+4 | Medium |
| 3047 | Find the Largest Area of Square Inside Two Rectangles | ArrayMathGeometry | Medium |
| 3048 | Earliest Second to Mark Indices I | ArrayBinary Search | Medium |
| 3066 | Minimum Operations to Exceed Threshold Value II | ArrayHeap (Priority Queue)Simulation | Medium |
| 3067 | Count Pairs of Connectable Servers in a Weighted Tree Network | ArrayTreeDepth-First Search | Medium |
| 3070 | Count Submatrices with Top-Left Element and Sum Less Than k | ArrayMatrixPrefix Sum | Medium |
| 3071 | Minimum Operations to Write the Letter Y on a Grid | ArrayHash TableMatrix+1 | Medium |
| 3075 | Maximize Happiness of Selected Children | ArrayGreedySorting | Medium |
| 3076 | Shortest Uncommon Substring in an Array | ArrayHash TableString+1 | Medium |
| 3080 | Mark Elements on Array by Performing Queries | ArrayHash TableSorting+2 | Medium |
| 3081 | Replace Question Marks in String to Minimize Its Value | Hash TableStringGreedy+3 | Medium |