| 57. Insert IntervalOpen source | Medium | Array |
| 63. Unique Paths IIOpen source | Medium | ArrayDynamic ProgrammingMatrix |
| 64. Minimum Path SumOpen source | Medium | ArrayDynamic ProgrammingMatrix |
| 66. Plus OneOpen source | Easy | ArrayMath |
| 73. Set Matrix ZeroesOpen source | Medium | ArrayHash TableMatrix |
| 74. Search a 2D MatrixOpen source | Medium | ArrayBinary SearchMatrix |
| 75. Sort ColorsOpen source | Medium | ArrayTwo PointersSorting+2 more |
| 78. SubsetsOpen source | Medium | ArrayBacktrackingBit Manipulation |
| 79. Word SearchOpen source | Medium | ArrayStringBacktracking+2 more |
| 81. Search in Rotated Sorted Array IIOpen source | Medium | ArrayBinary Search |
| 84. Largest Rectangle in HistogramOpen source | Hard | ArrayStackMonotonic Stack+1 more |
| 88. Merge Sorted ArrayOpen source | Easy | ArrayTwo PointersSorting |
| 90. Subsets IIOpen source | Medium | ArrayBacktrackingBit Manipulation |
| 105. Construct Binary Tree from Preorder and Inorder TraversalOpen source | Medium | ArrayHash TableDivide and Conquer+2 more |
| 121. Best Time to Buy and Sell StockOpen source | Easy | ArrayDynamic Programming |
| 122. Best Time to Buy and Sell Stock IIOpen source | Medium | ArrayDynamic ProgrammingGreedy |
| 128. Longest Consecutive SequenceOpen source | Medium | ArrayHash TableUnion-Find |
| 130. Surrounded RegionsOpen source | Medium | ArrayDepth-First SearchBreadth-First Search+2 more |
| 134. Gas StationOpen source | Medium | ArrayGreedy |
| 135. CandyOpen source | Hard | ArrayGreedy |
| 136. Single NumberOpen source | Easy | ArrayBit Manipulation |
| 139. Word BreakOpen source | Medium | ArrayHash TableString+4 more |
| 140. Word Break IIOpen source | Hard | ArrayHash TableString+4 more |
| 150. Evaluate Reverse Polish NotationOpen source | Medium | ArrayMathStack |
| 152. Maximum Product SubarrayOpen source | Medium | ArrayDynamic Programming |