Always Blue

A casual, borderline fun way to revise LeetCode

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  1. Arrays & Hashing

    1. 001Contains Duplicate
    2. 002Valid Anagram
    3. 003Two Sum
    4. 004Group Anagrams
    5. 005Top K Frequent Elements
    6. 006Encode and Decode Strings, locked
    7. 007Product of Array Except Self, locked
    8. 008Valid Sudoku, locked
    9. 009Longest Consecutive Sequence, locked

  2. Two Pointers

    1. 010Valid Palindrome, locked
    2. 011Two Sum II, locked
    3. 0123Sum, locked
    4. 013Container With Most Water, locked

  3. Sliding Window

    1. 015Best Time to Buy and Sell Stock, locked
    2. 016Longest Substring Without Repeating Characters, locked
    3. 017Longest Repeating Character Replacement, locked
    4. 018Permutation in String, locked

  4. Stack

  5. Binary Search

  6. Linked List

  7. Trees

  8. Tries

  9. Heap / Priority Queue

  10. Backtracking

  11. Graphs

  12. Advanced Graphs

  13. 1-D Dynamic Programming

  14. 2-D Dynamic Programming

  15. Greedy

  16. Intervals

  17. Math & Geometry

  18. Bit Manipulation

Always Blue