Practice problems across 75+ categories
Practice problems frequently asked at Sorting • 464 problems | 89 Easy | 273 Medium | 101 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 136 | Groups of Special-Equivalent Strings | Medium | ArrayHash TableString |
| 137 | H-Index | Medium | ArraySortingCounting Sort |
| 138 | Hand of Straights | Medium | ArrayHash TableGreedy |
| 139 | Happy Students | Medium | ArraySortingEnumeration |
| 140 | Heaters | Medium | ArrayTwo PointersBinary Search |
| 141 | Height Checker | Easy | ArraySortingCounting Sort |
| 142 | High-Access Employees | Medium | ArrayHash TableString |
| 143 | High Five | Easy | ArrayHash TableSorting |
| 144 | How Many Apples Can You Put into the Basket | Easy | ArrayGreedySorting |
| 145 | How Many Numbers Are Smaller Than the Current Number | Easy | ArrayHash TableSorting |
| 146 | Index Pairs of a String | Easy | ArrayStringTrie |
| 147 | Insertion Sort List | Medium | Linked ListSorting |
| 148 | Intersection of Multiple Arrays | Easy | ArrayHash TableSorting |
| 149 | Intersection of Two Arrays | Easy | ArrayHash TableTwo Pointers |
| 150 | Intersection of Two Arrays II | Easy | ArrayHash TableTwo Pointers |
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