@Zen_with_AI: 在刷LeetCode提高效率的关键本质上是模式识别。当你遇到一个新问题时,做…
摘要
这篇帖子强调模式识别是算法面试中高效解决LeetCode问题的关键,并提供了按核心模式分类的NeetCode 150列表。
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提高刷LeetCode效率的关键本质上在于模式识别。
当你遇到一道新题时,不要盲目暴力枚举;而应在30秒内完成抽象: 看到“连续子数组的最大/最小值“——联想到滑动窗口; 看到“Top K问题“——直接锁定堆/优先队列; 看到“图中的最短路径“——立即套用BFS模板。
算法面试比拼的不是临场灵感,而是特征提取和代码模板的熟练度。透彻拆解常见数据结构与算法模式,你自然能在看到题目时瞬间匹配最优解法。
🚀 建议:收藏此篇!NeetCode 150完整刷题清单 + 模式分类速查
刷题贵精不贵多——按模式分类掌握这150道经典题,LeetCode提升的核心精髓就是“模式识别“。看到题目要求时,你能在秒级时间内抽象出对应的数据结构和算法模板,面试基本就稳了!
以下是NeetCode 150的15大核心分类及完整题目清单,助你开启模式识别训练:
📌 1. 数组与哈希(Array & Hashing)- 9题
- Contains Duplicate
- Valid Anagram
- Two Sum
- Group Anagrams
- Top K Frequent Elements
- Product of Array Except Self
- Valid Sudoku
- Encode and Decode Strings
- Longest Consecutive Sequence
📌 2. 双指针(Two Pointers)- 5题
- Valid Palindrome
- Two Sum II Input Array Is Sorted
- 3Sum
- Container With Most Water
- Trapping Rain Water
📌 3. 滑动窗口(Sliding Window)- 6题
- Best Time to Buy And Sell Stock
- Longest Substring Without Repeating Characters
- Longest Repeating Character Replacement
- Permutation In String
- Minimum Window Substring
- Sliding Window Maximum
📌 4. 栈(Stack)- 7题
- Valid Parentheses
- Min Stack
- Evaluate Reverse Polish Notation
- Generate Parentheses
- Daily Temperatures
- Car Fleet
- Largest Rectangle In Histogram
📌 5. 二分查找(Binary Search)- 7题
- Binary Search
- Search a 2D Matrix
- Koko Eating Bananas
- Find Minimum In Rotated Sorted Array
- Search In Rotated Sorted Array
- Time Based Key-Value Store
- Median of Two Sorted Arrays
📌 6. 链表(Linked List)- 11题
- Reverse Linked List
- Merge Two Sorted Lists
- Reorder List
- Remove Nth Node From End of List
- Copy List With Random Pointer
- Add Two Numbers
- Linked List Cycle
- Find The Duplicate Number
- LRU Cache
- Merge K Sorted Lists
- Reverse Nodes In K-Group
📌 7. 树(二叉树)(Trees / Binary Trees)- 15题
- Invert Binary Tree
- Maximum Depth of Binary Tree
- Diameter of Binary Tree
- Balanced Binary Tree
- Same Tree
- Subtree of Another Tree
- Lowest Common Ancestor of a BST
- Binary Tree Level Order Traversal
- Binary Tree Right Side View
- Count Good Nodes In Binary Tree
- Validate Binary Search Tree
- Kth Smallest Element In a BST
- Construct Binary Tree From Preorder And Inorder Traversal
- Binary Tree Maximum Path Sum
- Serialize And Deserialize Binary Tree
📌 8. 前缀树(Tries)- 3题
- Implement Trie Prefix Tree
- Design Add And Search Words Data Structure
- Word Search II
📌 9. 堆/优先队列(Heap / Priority Queue)- 7题
- Kth Largest Element In a Stream
- Last Stone Weight
- K Closest Points to Origin
- Kth Largest Element In An Array
- Task Scheduler
- Design Twitter
- Find Median From Data Stream
📌 10. 回溯(Backtracking)- 9题
- Subsets
- Combination Sum
- Permutations
- Subsets II
- Combination Sum II
- Word Search
- Palette Partitioning
- Letter Combinations of a Phone Number
- N-Queens
📌 11. 图(Graphs)- 13题
- Number of Islands
- Max Area of Island
- Clone Graph
- Walls And Gates
- Rotting Oranges
- Pacific Atlantic Water Flow
- Surrounded Regions
- Course Schedule
- Course Schedule II
- Graph Valid Tree
- Number of Connected Components In An Undirected Graph
- Redundant Connection
- Word Ladder
📌 12. 高级图(Advanced Graphs)- 6题
- Reconstruct Itinerary
- Min Cost to Connect All Points
- Network Delay Time
- Swim In Rising Water
- Alien Dictionary
- Cheapest Flights Within K Stops
📌 13. 一维动态规划(1D Dynamic Programming)- 12题
- Climbing Stairs
- Min Cost Climbing Stairs
- House Robber
- House Robber II
- Longest Palindromic Substring
- Palindromic Substrings
- Decode Ways
- Coin Change
- Maximum Product Subarray
- Word Break
- Longest Increasing Subsequence
- Partition Equal Subset Sum
📌 14. 二维动态规划(2D Dynamic Programming)- 11题
- Unique Paths
- Longest Common Subsequence
- Best Time to Buy And Sell Stock With Cooldown
- Coin Change II
- Target Sum
- Interleaving String
- Longest Increasing Path In a Matrix
- Distinct Subsequences
- Edit Distance
- Burst Balloons
- Regular Expression Matching
📌 15. 贪心、区间、数学与位运算(Greedy/Intervals/Math & Bit Manipulation)- 29题
• 贪心:
- Maximum Subarray
- Jump Game
- Jump Game II
- Gas Station
- Hand of Straights
- Merge Triplets to Form Target Triplet
- Partition Labels
- Valid Parenthesis String
• 区间: 9. Insert Interval 10. Merge Intervals 11. Non-Overlapping Intervals 12. Meeting Rooms 13. Meeting Rooms II 14. Minimum Interval to Include Each Query
• 位运算: 15. Single Number 16. Number of 1 Bits 17. Counting Bits 18. Reverse Bits 19. Missing Number 20. Sum of Two Integers 21. Reverse Integer
• 数学与几何: 22. Rotate Image 23. Spiral Matrix 24. Set Matrix Zeroes 25. Happy Number 26. Pow(x, n) 27. Multiply Strings 28. Detect Squares
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