| Contiguous Array | array hash-table prefix-sum |
| Count Number of Nice Subarrays | array hash-table math sliding-window prefix-sum |
| Equal Row and Column Pairs | array hash-table matrix simulation |
| Find Players With Zero or One Losses | array hash-table sorting counting |
| Get Equal Substrings Within Budget | sliding-window |
| Group Anagrams | array hash-table string sorting |
| K Radius Subarray Averages | prefix-sum |
| Koko Eating Bananas | array binary-search |
| Longest Ones After One Flip | sliding-window |
| Longest Subarray Sum Less Equal To Target | sliding-window |
| Longest Substring With At Most K Distinct Characters | hash-table string sliding-window |
| Longest Substring Without Repeating Characters | hash-table string sliding-window |
| Max Consecutive Ones III | sliding-window |
| Max Sum of a Pair With Equal Sum of Digits | array hash-table sorting heap-priority-queue |
| Maximum Number of Vowels in a Substring of Given Length | sliding-window |
| Maximum Twin Sum of a Linked List | linked-list two-pointers stack |
| Minimum Consecutive Cards to Pick Up | array hash-table sliding-window |
| Minimum Size Subarray Sum | sliding-window |
| Reverse Linked List II | linked-list |
| Search a 2D Matrix | array binary-search matrix |
| Simplify Path | string stack |
| Number of Ways to Split Array | prefix-sum |
| Subarray Product Less Than K | sliding-window |
| Subarray Sum Equals K | array hash-table prefix-sum |
| Successful Pairs of Spells and Potions | array two-pointers binary-search sorting prefix-sum |
| Swap Nodes in Pairs | linked-list recursion two-pointers |
| Two Sum Sorted | two-pointers |