| 968 | | Hard | Dynamic ProgrammingTree |
| 2875 | | Medium | ArrayHash Table |
| 2542 | | Medium | ArrayGreedy |
| 2171 | | Medium | ArrayGreedy |
| 3332 | | Medium | ArrayDynamic Programming |
| 17 | | Medium | Hash TableString |
| 1122 | | Easy | ArrayHash Table |
| 3108 | | Hard | ArrayBit Manipulation |
| 1927 | | Medium | MathString |
| 1679 | | Medium | ArrayHash Table |
| 2920 | | Hard | ArrayDynamic Programming |
| 3077 | | Hard | ArrayDynamic Programming |
| 3082 | | Hard | ArrayDynamic Programming |
| 3085 | | Medium | Hash TableString |
| 1262 | | Medium | ArrayDynamic Programming |
| 2660 | | Easy | ArraySimulation |
| 2644 | | Easy | Array |
| 2343 | | Medium | ArrayString |
| 2352 | | Medium | ArrayHash Table |
| 3209 | | Hard | ArrayBinary Search |
| 1358 | | Medium | Hash TableString |
| 2430 | | Hard | StringDynamic Programming |
| 2387 | | Medium | ArrayBinary Search |
| 2558 | | Easy | ArrayHeap (Priority Queue) |
| 2984 | | Medium | Database |
| 2800 | | Medium | StringGreedy |
| 3383 | | Hard | ArrayDepth-First Search |
| 3323 | | Medium | ArrayBinary Search |
| 2972 | | Hard | ArrayTwo Pointers |
| 440 | | Hard | Trie |
| 169 | | Easy | ArrayHash Table |
| 121 | | Easy | ArrayDynamic Programming |
| 1326 | | Hard | ArrayDynamic Programming |
| 871 | | Hard | ArrayDynamic Programming |
| 2742 | | Hard | ArrayDynamic Programming |
| 152 | | Medium | ArrayDynamic Programming |
| 2551 | | Hard | ArrayGreedy |
| 198 | | Medium | ArrayDynamic Programming |
| 239 | | Hard | ArrayQueue |
| 122 | | Medium | ArrayDynamic Programming |
| 128 | | Medium | ArrayHash Table |
| 380 | | Medium | ArrayHash Table |
| 53 | | Medium | ArrayDivide and Conquer |
| 402 | | Medium | StringStack |
| 221 | | Medium | ArrayDynamic Programming |
| 3016 | | Medium | Hash TableString |
| 778 | | Hard | ArrayBinary Search |
| 1915 | | Medium | Hash TableString |
| 621 | | Medium | ArrayHash Table |
| 1701 | | Medium | ArraySimulation |
| 1642 | | Medium | ArrayGreedy |
| 1584 | | Medium | ArrayUnion Find |
| 1383 | | Hard | ArrayGreedy |
| 62 | | Medium | MathDynamic Programming |
| 475 | | Medium | ArrayTwo Pointers |
| 22 | | Medium | StringDynamic Programming |
| 410 | | Hard | ArrayBinary Search |
| 42 | | Hard | ArrayTwo Pointers |
| 45 | | Medium | ArrayDynamic Programming |
| 34 | | Medium | ArrayBinary Search |
| 1574 | | Medium | ArrayTwo Pointers |
| 875 | | Medium | ArrayBinary Search |
| 1283 | | Medium | ArrayBinary Search |
| 227 | | Medium | MathString |
| 943 | | Hard | ArrayString |
| 32 | | Hard | StringDynamic Programming |
| 2680 | | Medium | ArrayGreedy |
| 97 | | Medium | StringDynamic Programming |
| 39 | | Medium | ArrayBacktracking |
| 668 | | Hard | MathBinary Search |
| 1423 | | Medium | ArraySliding Window |
| 1569 | | Hard | ArrayMath |
| 18 | | Medium | ArrayTwo Pointers |
| 209 | | Medium | ArrayBinary Search |
| 2617 | | Hard | ArrayDynamic Programming |
| 4 | | Hard | ArrayBinary Search |
| 787 | | Medium | Dynamic ProgrammingDepth-First Search |
| 20 | | Easy | StringStack |
| 25 | | Hard | Linked ListRecursion |
| 31 | | Medium | ArrayTwo Pointers |
| 48 | | Medium | ArrayMath |
| 54 | | Medium | ArrayMatrix |
| 56 | | Medium | ArraySorting |
| 75 | | Medium | ArrayTwo Pointers |
| 72 | | Medium | StringDynamic Programming |
| 84 | | Hard | ArrayStack |
| 85 | | Hard | ArrayDynamic Programming |
| 120 | | Medium | ArrayDynamic Programming |
| 1139 | | Medium | ArrayDynamic Programming |
| 217 | | Easy | ArrayHash Table |
| 224 | | Hard | MathString |
| 225 | | Easy | StackDesign |
| 1235 | | Hard | ArrayBinary Search |
| 329 | | Hard | ArrayDynamic Programming |
| 363 | | Hard | ArrayBinary Search |
| 2673 | | Medium | ArrayDynamic Programming |
| 852 | | Medium | ArrayBinary Search |
| 863 | | Medium | Hash TableTree |
| 752 | | Medium | ArrayHash Table |
| 141 | | Easy | Hash TableLinked List |
