• [ ] Completed

🎯 LeetCode Problems (20)

Hashmap

• [ ] #1 Two Sum
• [ ] #202 Happy Number
• [ ] #205 Isomorphic Strings
• [ ] #219 Contains Duplicate II
• [ ] #242 Valid Anagram
• [ ] #290 Word Pattern
• [ ] #49 Group Anagrams
• [ ] #128 Longest Consecutive Sequence

Array / String

• [ ] #58 Length of Last Word

Intervals

• [ ] #228 Summary Ranges
• [ ] #56 Merge Intervals
• [ ] #57 Insert Interval
• [ ] #452 Minimum Number of Arrows to Burst Balloons

Stack