JavaScript HashMaps & Sets Sorting: 1. Group Anagrams 2. Longest Substring Without Repeating Characters 3. Jewels & Stones 4. Unique Morse Code Words 5. Happy Number 6. Uncommon Words from Two Sentences 7. Distribute Candies 8. Groups of Special-Equivalent Strings 9. Intersection of Two Arrays 10. Valid Sudoku 11. Isomorphic Strings 12. Word Pattern 13. Design HashMap 14. Design HashSet Multiset: 1. First Unique Character in a String 2. Subdomain Visit Count 3. Find the Difference 4. Sort Characters by Frequency 5. Most Common Word 6. Set Mismatch 7. Number of Atoms Learn JavaScript 📖 Full Course Outline