👆👆 Two Pointers — Index
Parent: Array Index
| Pattern | Question | Difficulty |
|---|---|---|
| Opposite Direction Template | Framework | — |
| Same Direction Template | Framework | — |
| Two Sum (sorted) | Pair sum | Easy |
| Three Sum | Triplet sum | Medium |
| Remove Duplicates | In-place removal | Easy |
| Container With Most Water | Max area | Medium |
| Valid Palindrome | String check | Easy |
| Trap Rainwater | Max water | Hard |
| Move Zeros | Partitioning | Easy |
| Sort by Parity | Partitioning | Easy |