| Question | Difficulty |
|---|---|
| 1 | 🟢 |
| 2 | 🟢 |
| 3 | 🟢 |
| 4 | 🟢 |
| 5 | 🟢 |
| 6 | 🟢 |
| 7 | 🟡 |
| 8 | 🟢 |
| 9 | 🟡 |
| 10 | 🟠 |
| 11 | 🟢 |
| 12-15 | 🟢 |
Most answers are good and strongly related to Aho & Lam & Sethi & Ullman's Dragon Book
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