Practice problems across 75+ categories
Practice problems frequently asked at Two Pointers • 223 problems | 57 Easy | 134 Medium | 31 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 136 | Next Greater Element III | Medium | MathTwo PointersString |
| 137 | Next Palindrome Using Same Digits | Hard | Two PointersString |
| 138 | Next Permutation | Medium | ArrayTwo Pointers |
| 139 | Number of Arithmetic Triplets | Easy | ArrayHash TableTwo Pointers |
| 140 | Number of Distinct Averages | Easy | ArrayHash TableTwo Pointers |
| 141 | Number of Smooth Descent Periods of a Stock | Medium | ArrayMathTwo Pointers |
| 142 | Number of Subarrays with Bounded Maximum | Medium | ArrayTwo Pointers |
| 143 | Number of Subsequences That Satisfy the Given Sum Condition | Medium | ArrayTwo PointersBinary Search |
| 144 | Number of Ways Where Square of Number Is Equal to Product of Two Numbers | Medium | ArrayHash TableMath |
| 145 | One Edit Distance | Medium | Two PointersString |
| 146 | Palindrome Linked List | Easy | Linked ListTwo PointersStack |
| 147 | Palindromic Substrings | Medium | Two PointersStringDynamic Programming |
| 148 | Pancake Sorting | Medium | ArrayTwo PointersGreedy |
| 149 | Partition Array According to Given Pivot | Medium | ArrayTwo PointersSimulation |
| 150 | Partition Array Into Two Arrays to Minimize Sum Difference | Hard | ArrayTwo PointersBinary Search |
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