Same-Direction (Fast/Slow on Arrays) Problems
74 Same-Direction (Fast/Slow on Arrays) problems on LeetCode, a Two Pointers interview pattern, ranked by importance (how often it comes up in real interviews). Difficulty (ELO) and importance shown per problem.
| # | PROBLEM | DIFF | ELO | IMP | PATTERNS |
|---|---|---|---|---|---|
| 1 | Merge Sorted Array | Easy | 1101 | 82 | |
| 2 | Remove Duplicates from Sorted Array | Easy | 1102 | 82 | Sorting + Comparison |
| 3 | Find the Duplicate Number | Medium | 1551 | 82 | Binary Search on Answer Space · Fast/Slow Pointers (Cycle, Middle) |
| 4 | Move Zeroes | Easy | 1032 | 78 | Opposite-Direction (Converging) |
| 5 | Remove Element | Easy | 1067 | 78 | Frequency Counting / Hash Map Lookup |
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