Duplicate [mp]
Micro pattern¶
Problems¶
Check duplicates¶
- 217. Contains Duplicate (Top Easy)
- 387. First Unique Character in a String (Top Easy)
- 3. Longest Substring Without Repeating Characters (Top Medium)
Normalization¶
- 929. Unique Email Addresses (Google Prep)
Skip or count duplicates¶
- 26. Remove Duplicates from Sorted Array (Top Easy)
- 15. 3Sum (Top Medium)
- 38. Count and Say (Top Medium)