DSA Solution

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04_dsa_solutions/leetcode_solutions

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Platform & Reading Settings

Theme & Appearance

COLOR THEME

READING TINT

Reading & View Controls

📑 Platform Audit & Verification Report

360

Indexed Notes

5.0s

Build Time

100%

SPA Compliant

60 FPS

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Active Platform Features

✅ Multi-Track Fast Dev: Staging 2+ tracks in parallel with sub-5s full builds.
✅ Obsidian Graph Engine: Emerald (DSA), Indigo (Architecture), Amber (Languages), Pink (Cloud).
✅ Directed Arrows: GPU-accelerated triangular vectors indicating knowledge dependencies.
✅ Lazy-Loaded Graph: Zero initial memory/CDN overhead, hydrating strictly on viewport intersection.
✅ Mobile TOC Drawer: Touch-friendly bottom sheet highlighting active section headings.
✅ Distraction-Free Focus: Maximize reading canvas with 1-click floating exit trigger.
✅ Resilient Storage: Defensive JSON parsing preventing crashes across hard reload (Ctrl+Shift+R).

GraphMind

dsa

406 items with this tag.

Oct 27, 2026
neetcode_solutions
Oct 27, 2026
leetcode_solutions
Oct 27, 2026
interview_cake_solutions
Oct 27, 2026
02_dsa_solutions
Oct 27, 2026
Software Engineering & Language Mastery Portal
Oct 27, 2026
Composition Over Inheritance: Architectural Design & .NET Implementation
Oct 27, 2026
149.Sum of Two Integers
Oct 27, 2026
150.Reverse Integer
Oct 27, 2026
144.Single Number
Oct 27, 2026
145.Number of 1 Bits
Oct 27, 2026
146.Counting Bits
Oct 27, 2026
147.Reverse Bits
Oct 27, 2026
148.Missing Number
Oct 27, 2026
141.Pow(x, n)
Oct 27, 2026
142.Multiply Strings
Oct 27, 2026
143.Detect Squares
Oct 27, 2026
137.Spiral Matrix
Oct 27, 2026
138.Set Matrix Zeroes
Oct 27, 2026
139.Happy Number
Oct 27, 2026
140.Plus One
Oct 27, 2026
135.Minimum Interval to Include Each Query
Oct 27, 2026
136.Rotate Image
Oct 27, 2026
130.Insert Interval
Oct 27, 2026
131.Merge Intervals
Oct 27, 2026
132.Non overlapping Intervals
Oct 27, 2026
133.Meeting Rooms
Oct 27, 2026
134.Meeting Rooms II
Oct 27, 2026
126.Hand of Straights
Oct 27, 2026
127.Merge Triplets to Form Target Triplet
Oct 27, 2026
128.Partition Labels
Oct 27, 2026
129.Valid Parenthesis String
Oct 27, 2026
122.Maximum Subarray
Oct 27, 2026
123.Jump Game
Oct 27, 2026
124.Jump Game II
Oct 27, 2026
125.Gas Station
Oct 27, 2026
117.Longest Increasing Path in a Matrix
Oct 27, 2026
118.Distinct Subsequences
Oct 27, 2026
119.Edit Distance
Oct 27, 2026
120.Burst Balloons
Oct 27, 2026
121.Regular Expression Matching
Oct 27, 2026
113.Best Time to Buy and Sell Stock with Cooldown
Oct 27, 2026
114.Coin Change II
Oct 27, 2026
115.Target Sum
Oct 27, 2026
116.Interleaving String
Oct 27, 2026
110.Partition Equal Subset Sum
Oct 27, 2026
NeetCode 150: Climbing Stairs
Oct 27, 2026
111.Unique Paths
Oct 27, 2026
112.Longest Common Subsequence
Oct 27, 2026
106.Coin Change
Oct 27, 2026
107.Maximum Product Subarray
Oct 27, 2026
108.Word Break
Oct 27, 2026
109.Longest Increasing Subsequence
Oct 27, 2026
101.House Robber
Oct 27, 2026
102.House Robber II
Oct 27, 2026
103.Longest Palindromic Substring
Oct 27, 2026
104.Palindromic Substrings
Oct 27, 2026
105.Decode Ways
Oct 27, 2026
97.Alien Dictionary
Oct 27, 2026
98.Cheapest Flights Within K Stops
Oct 27, 2026
100.Min Cost Climbing Stairs
Oct 27, 2026
93.Reconstruct Itinerary
Oct 27, 2026
94.Min Cost to Connect All Points
Oct 27, 2026
95.Network Delay Time
Oct 27, 2026
96.Swim in Rising Water
Oct 27, 2026
90.Number of Connected Components in an Undirected Graph
Oct 27, 2026
91.Redundant Connection
Oct 27, 2026
92.Word Ladder
Oct 27, 2026
86.Surrounded Regions
Oct 27, 2026
87.Course Schedule
Oct 27, 2026
88.Course Schedule II
Oct 27, 2026
89.Graph Valid Tree
Oct 27, 2026
81.Max Area of Island
Oct 27, 2026
82.Clone Graph
Oct 27, 2026
83.Walls and Gates
Oct 27, 2026
NeetCode 150: Rotting Oranges
Oct 27, 2026
85.Pacific Atlantic Water Flow
Oct 27, 2026
77.Palindrome Partitioning
Oct 27, 2026
78.Letter Combinations of a Phone Number
Oct 27, 2026
79.N Queens
Oct 27, 2026
80.Number of Islands
Oct 27, 2026
72.Combination Sum
Oct 27, 2026
73.Permutations
Oct 27, 2026
74.Subsets II
Oct 27, 2026
75.Combination Sum II
Oct 27, 2026
76.Word Search
Oct 27, 2026
67.Kth Largest Element in an Array
Oct 27, 2026
68.Task Scheduler
Oct 27, 2026
69.Design Twitter
Oct 27, 2026
70.Find Median from Data Stream
Oct 27, 2026
71.Subsets
Oct 27, 2026
63.Word Search II
Oct 27, 2026
64.Kth Largest Element in a Stream
Oct 27, 2026
65.Last Stone Weight
Oct 27, 2026
66.K Closest Points to Origin
Oct 27, 2026
59.Binary Tree Maximum Path Sum
Oct 27, 2026
60.Serialize and Deserialize Binary Tree
Oct 27, 2026
61.Implement Trie Prefix Tree
Oct 27, 2026
62.Design Add and Search Words Data Structure
Oct 27, 2026
55.Count Good Nodes in Binary Tree
Oct 27, 2026
56.Validate Binary Search Tree
Oct 27, 2026
57.Kth Smallest Element in a BST
Oct 27, 2026
58.Construct Binary Tree from Preorder and Inorder Traversal
Oct 27, 2026
52.Lowest Common Ancestor of a Binary Search Tree
Oct 27, 2026
53.Binary Tree Level Order Traversal
Oct 27, 2026
54.Binary Tree Right Side View
Oct 27, 2026
47.Maximum Depth of Binary Tree
Oct 27, 2026
48.Diameter of Binary Tree
Oct 27, 2026
49.Balanced Binary Tree
Oct 27, 2026
50.Same Tree
Oct 27, 2026
51.Subtree of Another Tree
Oct 27, 2026
42.Find the Duplicate Number
Oct 27, 2026
43.LRU Cache
Oct 27, 2026
44.Merge k Sorted Lists
Oct 27, 2026
45.Reverse Nodes in k Group
Oct 27, 2026
46.Invert Binary Tree
Oct 27, 2026
37.Reorder List
Oct 27, 2026
38.Remove Nth Node From End of List
Oct 27, 2026
39.Copy List with Random Pointer
Oct 27, 2026
40.Add Two Numbers
Oct 27, 2026
41.Linked List Cycle
Oct 27, 2026
34.Median of Two Sorted Arrays
Oct 27, 2026
35.Reverse Linked List
Oct 27, 2026
36.Merge Two Sorted Lists
Oct 27, 2026
29.Search a 2D Matrix
Oct 27, 2026
30.Koko Eating Bananas
Oct 27, 2026
31.Find Minimum in Rotated Sorted Array
Oct 27, 2026
32.Search in Rotated Sorted Array
Oct 27, 2026
33.Time Based Key Value Store
Oct 27, 2026
24.Generate Parentheses
Oct 27, 2026
25.Daily Temperatures
Oct 27, 2026
26.Car Fleet
Oct 27, 2026
27.Largest Rectangle in Histogram
Oct 27, 2026
28.Binary Search
Oct 27, 2026
20.Sliding Window Maximum
Oct 27, 2026
21.Valid Parentheses
Oct 27, 2026
22.Min Stack
Oct 27, 2026
23.Evaluate Reverse Polish Notation
Oct 27, 2026
15.Best Time to Buy and Sell Stock
Oct 27, 2026
16.Longest Substring Without Repeating Characters
Oct 27, 2026
17.Longest Repeating Character Replacement
Oct 27, 2026
18.Permutation in String
Oct 27, 2026
19.Minimum Window Substring
Oct 27, 2026
10.Valid Palindrome
Oct 27, 2026
11.Two Sum II Input Array Is Sorted
Oct 27, 2026
12.3Sum
Oct 27, 2026
13.Container With Most Water
Oct 27, 2026
14.Trapping Rain Water
Oct 27, 2026
06.Encode and Decode Strings
Oct 27, 2026
07.Product of Array Except Self
Oct 27, 2026
08.Valid Sudoku
Oct 27, 2026
09.Longest Consecutive Sequence
Oct 27, 2026
02.Valid Anagram
Oct 27, 2026
03.Two Sum
Oct 27, 2026
04.Group Anagrams
Oct 27, 2026
05.Top K Frequent Elements
Oct 27, 2026
01.Duplicate Integer
Oct 27, 2026
53.Maximum Subarray
Oct 27, 2026
13.Roman to Integer
Oct 27, 2026
66.Plus One
Oct 27, 2026
1464.Maximum Product of Two Elements in an Array
Oct 27, 2026
05.Longest Palindromic Substring
Oct 27, 2026
509.Fibonacci Number
Oct 27, 2026
21.Merge Two Sorted Lists
Oct 27, 2026
23.Merge k Sorted Lists
Oct 27, 2026
707.Design Linked List
Oct 27, 2026
637.Average of Levels in Binary Tree
Oct 27, 2026
155.Min Stack
Oct 27, 2026
04.Median of Two Sorted Arrays
Oct 27, 2026
02.Add Two Numbers
Oct 27, 2026
27.Remove Element
Oct 27, 2026
283.Move Zeroes
Oct 27, 2026
03.Longest Substring Without Repeating Characters
Oct 27, 2026
219.Contains Duplicate II
Oct 27, 2026
347.Top K Frequent Elements
Oct 27, 2026
560.Subarray Sum Equals K
Oct 27, 2026
912.Sort an Array (Bubble Sort)
Oct 27, 2026
912.Sort an Array (Insertion Sort)
Oct 27, 2026
912.Sort an Array (Quick Sort)
Oct 27, 2026
912.Sort an Array (Selection Sort)
Oct 27, 2026
26.Remove Duplicates from Sorted Array
Oct 27, 2026
00.Array CRUD Fundamentals
Oct 27, 2026
01.Two Sum
Oct 27, 2026
217.Contains Duplicate
Oct 27, 2026
36.Simulate 7 Sided Die
Oct 27, 2026
37.Rectangular Love
Oct 27, 2026
32.Find Duplicate Files
Oct 27, 2026
33.The Stolen Breakfast Drone
Oct 27, 2026
34.Two Egg Problem
Oct 27, 2026
35.Simulate 5 Sided Die
Oct 27, 2026
30.Bracket Validator
Oct 27, 2026
31.MillionGazillion
Oct 27, 2026
27.Largest Stack
Oct 27, 2026
28.Implement A Queue With Two Stacks
Oct 27, 2026
29.Parenthesis Matching
Oct 27, 2026
24.Compute nth Fibonacci Number
Oct 27, 2026
25.Making Change
Oct 27, 2026
26.The Cake Thief
Oct 27, 2026
22.MeshMessage
Oct 27, 2026
23.Recursive String Permutations
Oct 27, 2026
18.Balanced Binary Tree
Oct 27, 2026
19.Binary Search Tree Checker
Oct 27, 2026
20.2nd Largest Item in a BST
Oct 27, 2026
21.Graph Coloring
Oct 27, 2026
16.Find Repeat Space Edition
Oct 27, 2026
17.Find Repeat Space Edition BEAST MODE
Oct 27, 2026
12.Product of All Other Numbers
Oct 27, 2026
13.In Place Shuffle
Oct 27, 2026
14.Single Riffle Shuffle
Oct 27, 2026
15.Find Rotation Point
Oct 27, 2026
10.Apple Stocks
Oct 27, 2026
11.Highest Product of 3
Oct 27, 2026
06.Inflight Entertainment
Oct 27, 2026
07.Permutation Palindrome
Oct 27, 2026
08.Word Cloud Data
Oct 27, 2026
09.Top Scores
Oct 27, 2026
02.Reverse String in Place
Oct 27, 2026
03.Reverse Words
Oct 27, 2026
04.Merge Sorted Arrays
Oct 27, 2026
05.Cafe Order Checker
Oct 27, 2026
01.Merging Meeting Times
Oct 27, 2026
Supplements for 06_dp (Exam, Problems, Q&A, Resources)
Oct 27, 2026
Advanced Tree Structures & Link-Cut Trees: Splay Trees, HLD & Dynamic Trees in O(log N)
Oct 27, 2026
Link-Cut Tree (LCT) & Dynamic Trees
Oct 27, 2026
Splay Tree: Amortized Self-Balancing Binary Search Tree
Oct 27, 2026
Treap, Implicit Treap & Rope Data Structure
Oct 27, 2026
Supplements for 14_advanced_tree_structures_and_link_cut_trees (Exam, Problems, Q&A, Resources)
Oct 27, 2026
DP Space Optimization: Rolling Arrays, In-Place Updates & State Reduction Techniques
Oct 27, 2026
07 dp patterns cc dng dp kinh in
Oct 27, 2026
Memoization vs Tabulation: Top-Down vs Bottom-Up Dynamic Programming In-Depth
Oct 27, 2026
09 state transition thinking t duy chuyn trng thi
Oct 27, 2026
10 leetcode practice luyn tp dp qua 10 bi kinh in
Oct 27, 2026
02 2d dp dp hai chiu
Oct 27, 2026
03 dp on subsequences dp trn dy con
Oct 27, 2026
04 dp on strings dp trn chui
Oct 27, 2026
05 dp on trees dp trn cy
Oct 27, 2026
Advanced Graph Flows & Matching: Stoer-Wagner Algorithm for Global Minimum Cut
Oct 27, 2026
Supplements for 13_advanced_graph_flows_and_matching (Exam, Problems, Q&A, Resources)
Oct 27, 2026
Dynamic Programming (DP) - Master Module Overview
Oct 27, 2026
01 1d dp dp mt chiu
Oct 27, 2026
Advanced Graph Flows & Matching: Dinic's Algorithm, Min-Cut Max-Flow & Hopcroft-Karp
Oct 27, 2026
Advanced Graph Flows & Matching: Hopcroft-Karp Algorithm for Maximum Bipartite Matching
Oct 27, 2026
Advanced Graph Flows & Matching: Hungarian Algorithm for Assignment Problem & Weighted Bipartite Matching
Oct 27, 2026
09 bellman ford algorithm
Oct 27, 2026
10 floyd warshall algorithm
Oct 27, 2026
11 leetcode practice gii chi tit 10 bi kinh in
Oct 27, 2026
Supplements for 05_graphs (Exam, Problems, Q&A, Resources)
Oct 27, 2026
04 topological sort
Oct 27, 2026
Shortest Path Algorithms: Comprehensive Master Guide — Tổng Quan Thuật Toán Đường Đi Ngắn Nhất
Oct 27, 2026
06 minimum spanning tree cy khung nh nht
Oct 27, 2026
07 disjoint set union find
Oct 27, 2026
08 dijkstras algorithm
Oct 27, 2026
Supplements for 12_computational_geometry (Exam, Problems, Q&A, Resources)
Oct 27, 2026
Graphs: Representations & Traversal - Master Module Overview
Oct 27, 2026
01 graph representation
Oct 27, 2026
02 bfs dfs
Oct 27, 2026
03 cycle detection
Oct 27, 2026
Supplements for 07_heaps (Exam, Problems, Q&A, Resources)
Oct 27, 2026
Computational Geometry: Convex Hull, Line Sweep, Polygon Area & Point Location
Oct 27, 2026
Computational Geometry: Convex Hull via Graham Scan & Jarvis March
Oct 27, 2026
Computational Geometry: Line Segment Intersection & Bentley-Ottmann Sweep-Line
Oct 27, 2026
Computational Geometry: Point-in-Polygon Testing via Ray Casting & Winding Number
Oct 27, 2026
11 1 min heap max heap
Oct 27, 2026
11 2 priority queue
Oct 27, 2026
11 3 kth largest smallest
Oct 27, 2026
11 4 merge k sorted lists
Oct 27, 2026
11 5 top k elements problems
Oct 27, 2026
11 6 median in data stream
Oct 27, 2026
Probabilistic DSA: HyperLogLog & Cardinality Estimation
Oct 27, 2026
Advanced Game Theory: Nim Game & Sprague-Grundy Theorem
Oct 27, 2026
Supplements for 11_advanced_game_theory_and_combinatorics (Exam, Problems, Q&A, Resources)
Oct 27, 2026
Heaps & Priority Queues - Master Module Overview
Oct 27, 2026
01 gii chi tit cc bi leetcode v heaps priority queue
Oct 27, 2026
Supplements for 10_binary_search_trees (Exam, Problems, Q&A, Resources)
Oct 27, 2026
Advanced Game Theory & Combinatorics: Sprague-Grundy Theorem, Nim Games & Combinatorial Identities
Oct 27, 2026
Advanced Combinatorics: Burnside's Lemma & Pólya Enumeration Theorem
Oct 27, 2026
Tries (Prefix Trees) & Advanced String Indexing: Architecture & Bitwise XOR Mechanics
Oct 27, 2026
Advanced String Algorithms: Manacher's Algorithm for Palindromic Substrings
Oct 27, 2026
Advanced String Algorithms: Suffix Array & Kasai's LCP Array
Oct 27, 2026
Advanced String Algorithms: Z-Algorithm for Linear Pattern Matching
Oct 27, 2026
Supplements for 08_trie (Exam, Problems, Q&A, Resources)
Oct 27, 2026
07 maximum path sum path based problems
Oct 27, 2026
08 luyn tp leetcode gii chi tit tng bi
Oct 27, 2026
Supplements for 04_binary_trees (Exam, Problems, Q&A, Resources)
Oct 27, 2026
Diameter of Binary Tree (Đường Kính Cây Nhị Phân) - Lý Thuyết, DFS & Quy Hoạch Động
Oct 27, 2026
04 lowest common ancestor t tin chung gn nht
Oct 27, 2026
05 tree views cc gc nhn ca cy
Oct 27, 2026
06 serialization and deserialization
Oct 27, 2026
Supplements for 09_advanced_math_and_geometry (Exam, Problems, Q&A, Resources)
Oct 27, 2026
Binary Trees: Traversals, Structural Properties & Recursive Mechanics
Oct 27, 2026
01 tree traversals duyt cy
Oct 27, 2026
02 height depth chiu cao chiu su
Oct 27, 2026
09 Advanced Math And Geometry - Master Module Overview
Oct 27, 2026
Advanced Math & Geometry: Convex Hull Trick (CHT) & Li Chao Tree Optimization
Oct 27, 2026
Advanced Math & Geometry: Fast Fourier Transform (FFT) & Polynomial Multiplication
Oct 27, 2026
Advanced Math & Geometry: Inclusion-Exclusion Principle & Möbius Inversion
Oct 27, 2026
Matrix Exponentiation: Linear Recurrences, Fibonacci & Transition Matrices in O(K^3 log N)
Oct 27, 2026
Supplements for 08_greedy (Exam, Problems, Q&A, Resources)
Oct 27, 2026
99.09. 📚 Supplements for 09_dsu (Exam, Problems, Q&A, Resources)
Oct 27, 2026
99.10. 📚 Supplements for 10_segment_tree (Exam, Problems, Q&A, Resources)
Oct 27, 2026
01. Advanced Data Structures: Disjoint Set Union (DSU) with Rollback Mechanics
Oct 27, 2026
01. Advanced Data Structures: Persistent Segment Trees & Functional Data Structures
Oct 27, 2026
01. Advanced Data Structures: Suffix Automaton (SAM) & Substring Queries
Oct 27, 2026
01. 🌲 Centroid Decomposition: Tree Path Queries & Divide & Conquer on Trees
Oct 27, 2026
99.02. 📚 Supplements for 02_monotonic_stack (Exam, Problems, Q&A, Resources)
Oct 27, 2026
00. 📚 08 Advanced Data Structures — Master Module Overview
Oct 27, 2026
04. 🥞 Monotonic Stack (Ngăn xếp Đơn điệu) — Lý thuyết Toàn diện, Chứng minh & Ứng dụng
Oct 27, 2026
05. Next Greater Element
Oct 27, 2026
06. Expression Evaluation
Oct 27, 2026
07. Min Stack
Oct 27, 2026
08. Queue using Stack / Stack using Queue
Oct 27, 2026
09. LeetCode Practice — Giải chi tiết 8 bài kinh điển
Oct 27, 2026
99.07. 📚 Supplements for 07_advanced_graph_theory (Exam, Problems, Q&A, Resources)
Oct 27, 2026
00. 🥞 Stacks & Queues: Architecture, Monotonic Variants & Systems Engineering
Oct 27, 2026
01. Stack (LIFO)
Oct 27, 2026
02. Queue (FIFO)
Oct 27, 2026
03. 🔄 Deque (Hàng đợi Hai đầu) — Kiến trúc Bộ nhớ Chunked, Vòng lặp & Ứng dụng Thực chiến
Oct 27, 2026
99.06. 📚 Supplements for 06_linked_list (Exam, Problems, Q&A, Resources)
Oct 27, 2026
00. 📚 07 Advanced Graph Theory — Master Module Overview
Oct 27, 2026
01. Advanced DSA Pattern: Heavy-Light Decomposition (HLD) for Tree Path Queries
Oct 27, 2026
01. Advanced DSA Pattern: Minimum Cost Maximum Flow (MCMF) - Successive Shortest Path
Oct 27, 2026
01. Advanced DSA Pattern: Network Flow - Dinic's & Edmonds-Karp Maximum Flow
Oct 27, 2026
02. Doubly Linked List
Oct 27, 2026
03. Fast & Slow Pointer
Oct 27, 2026
04. Cycle Detection
Oct 27, 2026
05. Reverse / Merge Linked List
Oct 27, 2026
06. LRU Cache (Design Problem)
Oct 27, 2026
07. Giải chi tiết bài LeetCode về Linked List
Oct 27, 2026
01. Advanced DSA Pattern: Tree Dynamic Programming & Rerooting Technique
Oct 27, 2026
99.06. 📚 Supplements for 06_advanced_dynamic_programming (Exam, Problems, Q&A, Resources)
Oct 27, 2026
00. 🔗 Linked Lists: Singly, Doubly, Circular Lists & Memory Architecture
Oct 27, 2026
01. Singly Linked List
Oct 27, 2026
99.05. 📚 Supplements for 05_hashing (Exam, Q&A)
Oct 27, 2026
00. 📚 06 Advanced Dynamic Programming — Master Module Overview
Oct 27, 2026
01. Advanced DSA Pattern: Digit Dynamic Programming for Number Range Constraints
Oct 27, 2026
01. Advanced DSA Pattern: Divide & Conquer Dynamic Programming Optimization
Oct 27, 2026
04. Subarray / Substring Problems
Oct 27, 2026
05. ⚖️ Set vs Map: HashSet vs TreeSet, HashMap vs TreeMap — Architectural Comparison & Memory Layout
Oct 27, 2026
06. Hashing cho Pair Sum / 2Sum Variations
Oct 27, 2026
07. LeetCode Practice — Luyện tập Hashing
Oct 27, 2026
99.05. 📚 Supplements for 05_advanced_dsa_patterns (Exam, Problems, Q&A, Resources)
Oct 27, 2026
00. 🔑 Hash Tables, Dictionaries & Hash Maps: Architectural Theory & Collision Resolution
Oct 27, 2026
01. Hash Maps
Oct 27, 2026
02. Frequency Counting
Oct 27, 2026
03. Prefix Hashing
Oct 27, 2026
01. Advanced DSA Pattern: Dynamic Programming with State Machine & Bitmask
Oct 27, 2026
01. Advanced DSA Pattern: Monotonic Stack, Monotonic Queue & Sliding Window Deque
Oct 27, 2026
01. Advanced DSA Pattern: Trie & Aho-Corasick Multi-Pattern String Matching
Oct 27, 2026
01. Complexity Analysis & Memory Overhead
Oct 27, 2026
07. LeetCode Practice — Giải chi tiết 8 bài kinh điển
Oct 27, 2026
99.04. 📚 Supplements for 04_recursion_backtracking (Exam, Q&A)
Oct 27, 2026
00. 📚 05 Advanced DSA Patterns — Master Module Overview
Oct 27, 2026
01. Advanced DSA Pattern: Advanced Graph Algorithms (Tarjan's, Kosaraju's, Bridges & Cut-Vertices)
Oct 27, 2026
03. Permutations
Oct 27, 2026
04. Backtracking (N-Queens, Sudoku)
Oct 27, 2026
05. Combination Sum Problems
Oct 27, 2026
06. Palindrome Partitioning
Oct 27, 2026
99.03. 📚 Supplements for 03_binary_search (Exam, Problems, Q&A, Resources)
Oct 27, 2026
00. 🔁 Recursion & Backtracking: State Trees, Pruning Mechanics & Combinatorial Search
Oct 27, 2026
01. Recursion Basics
Oct 27, 2026
02. Subsets / Subsequences
Oct 27, 2026
05. Quick Sort
Oct 27, 2026
06. Heap Sort
Oct 27, 2026
07. Lower Bound / Upper Bound
Oct 27, 2026
08. Custom Comparator Sorting
Oct 27, 2026
09. LeetCode Practice -- Luyện tập Searching & Sorting
Oct 27, 2026
01. Basic Sorting
Oct 27, 2026
02. Binary Search
Oct 27, 2026
03. Binary Search on Answer
Oct 27, 2026
04. Merge Sort
Oct 27, 2026
00. ➗ Divide & Conquer: Paradigms, Recurrence Relations & Algorithmic Geometry
Oct 27, 2026
00. 🔍 Searching & Sorting: Master Algorithmic Foundations, Theory & Engineering
Oct 27, 2026
99.01. 📚 Supplements for 01_sliding_window (Exam, Problems, Q&A, Resources)
Oct 27, 2026
10. LeetCode Practice - Giải Chi Tiết
Oct 27, 2026
07.2. 2D Arrays — Ma trận
Oct 27, 2026
08. 🗳️ Boyer-Moore Majority Voting Algorithm — Lý thuyết, Chứng minh Toán học & Mở rộng
Oct 27, 2026
09. Dutch National Flag Algorithm
Oct 27, 2026
03. Two Pointers — Kỹ thuật hai con trỏ
Oct 27, 2026
04. Sliding Window — Cửa sổ trượt
Oct 27, 2026
05. ➕ Prefix Sum (Mảng Cộng Dồn) & Difference Array — Lý thuyết Toàn diện & Ứng dụng
Oct 27, 2026
06. Kadane's Algorithm
Oct 27, 2026
00. 📦 Arrays & Strings: Master Architectural Overview & Algorithmic Patterns
Oct 27, 2026
01. 📦 Arrays (Mảng) — Cấu trúc Bộ nhớ, Thao tác Căn bản & Kỹ thuật Nâng cao
Oct 27, 2026
02. 🔤 Strings (Chuỗi) — Kiến trúc Bộ nhớ, Immutability & Thuật toán Xử lý Chuỗi
Oct 27, 2026
05. LeetCode Practice — Basics
Oct 27, 2026
99.01. 📚 Supplements for 01_basics (Exam, Problems, Q&A, Resources)
Oct 27, 2026
02. Math Basics
Oct 27, 2026
03. Bit Manipulation Basics
Oct 27, 2026
04. Bit Masking & XOR Tricks
Oct 27, 2026
00. 📊 Mastering Big O Notation & Algorithmic Complexity Analysis
Oct 27, 2026
00. ⚡ Mastering Bit Manipulation & Low-Level Binary Computing
Oct 27, 2026
01. Time & Space Complexity Analysis
Aug 26, 2026
00. 🧭 Greedy Algorithms: Theoretical Foundations, Matroid Theory & Design Patterns
Aug 26, 2026
01. 🎯 Activity Selection & Interval Scheduling Algorithms
Aug 26, 2026
02. 🗜️ Huffman Coding & Lossless Data Compression
Aug 26, 2026
Fractional Knapsack vs 0/1 Knapsack: LP Relaxation, QuickSelect O(N) & Dynamic Programming
Aug 26, 2026
Jump Game & Greedy Reachability Algorithms: From Linear Frontiers to Sliding Window BFS
Aug 26, 2026
Task Scheduler & String Reorganization: Frequency Prioritization & Cooldown Mechanics
Aug 26, 2026
Classical LeetCode Greedy Problem Walkthroughs: Deep Proofs & Optimal Solutions
Aug 26, 2026
Binary Search Trees (BST): Theoretical Foundations, Balancing, and Traversal Mechanics
Aug 26, 2026
Binary Search Tree Operations: Search, Insert & 3-Case Deletion Mechanics
Aug 26, 2026
Validating Binary Search Trees & In-Order Traversal Invariants
Aug 26, 2026
Kth Smallest Element in a Binary Search Tree & Order-Statistic Trees
Aug 26, 2026
Lowest Common Ancestor in a Binary Search Tree & Binary Lifting Mechanics
Aug 26, 2026
Converting Sorted Arrays & Linked Lists to Height-Balanced BSTs
Aug 26, 2026
LeetCode Practice: Classical Binary Search Tree Problems Deep Dive
Aug 21, 2026
Coding Interview Patterns & Data Structures Mastery Cheat Sheet

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