Algorithm Data Structure, Algorithm
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1101. Data Structure - Overview1101. Data Structure - OverviewOverview of common data structures.
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- Data Structure
- 1111. Data Structure - Linked List1111. Data Structure - Linked List
Implement linked list.
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- Singly Linked List, Doubly Linked List
- 1112. Data Structure - Stack1112. Data Structure - Stack
Implement stack with linked list and array.
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- Stack, LIFO
- 1113. Data Structure - Queue1113. Data Structure - Queue
Implement queue with linked list and array.
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- Queue, FIFO
- 1114. Data Structure - Deque1114. Data Structure - Deque
Implement deque with linked list and circular array.
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- Deque
- 1116. Data Structure - LRU Cache1116. Data Structure - LRU Cache
Implement Least Recently Used(LRU) cache.
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- LRU, Cache
- 1117. Data Structure - LFU Cache1117. Data Structure - LFU Cache
Implement Least Frequently Used(LFU) cache.
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- LFU, Cache
- 1118. Data Structure - Monotonic Queue1118. Data Structure - Monotonic Queue
Implement monotonic queue.
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- Monotonic Queue
- 1119. Data Structure - Skip List1119. Data Structure - Skip List
Implement SkipList.
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- SkipList
- 1121. Data Structure - Tree1121. Data Structure - Tree
Different types of tree data structure, tree traversal.
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- Tree, Binary Tree
- 1122. Data Structure - Binary Search Tree1122. Data Structure - Binary Search Tree
Implement and traverse binary search tree.
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- BST, Inorder
- 1123. Data Structure - Red Black Tree - draft1123. Data Structure - Red Black Tree - dra...
Introduce red black tree and its properties.
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- RBT
- 1123. Data Structure - N-ary Tree1123. Data Structure - N-ary Tree
Implement and traverse N-ary Tree.
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- N-ary, Nary
- 1124. Data Structure - B Tree1124. Data Structure - B Tree
Introduce B Tree and its properties.
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- BTree
- 1125. Data Structure - B+ Tree1125. Data Structure - B+ Tree
Introduce B+ Tree and its properties.
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- B+ Tree
- 1126. Data Structure - Trie1126. Data Structure - Trie
Implement trie for word search.
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- Trie, Prefix Tree
- 1127. Data Structure - Segment Tree1127. Data Structure - Segment Tree
Implement segment tree for range search.
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- Segment Tree, Interval Tree
- 1128. Data Structure - Fenwick Tree1128. Data Structure - Fenwick Tree
Use fenwick tree to efficiently solve the prefix sum problem.
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- Fenwick, Binary Indexed Tree
- 1131. Data Structure - HashMap1131. Data Structure - HashMap
Implement HashMap with array and linked list.
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- Hash, Load Factor, Rehashing
- 1132. Data Structure - Heap1132. Data Structure - Heap
Implement heap with array.
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- Max Heap, Min Heap
- 1133. Data Structure - Bloom Filter1133. Data Structure - Bloom Filter
Bloom filter and its implementation.
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- Bloom Filter
- 1141. Data Structure - Graph1141. Data Structure - Graph
Implement undirected graph.
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- Graph, DFS, BFS
- 1142. Data Structure - Graph Problems1142. Data Structure - Graph Problems
Popular graph problems.
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- Graph, DFS, BFS
- 1143. Data Structure - Bipartite Graph1143. Data Structure - Bipartite Graph
Bipartite Graph.
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- Bipartite Graph, Hungarian Algorithm
- 1144. Data Structure - Directed Graph - Draft1144. Data Structure - Directed Graph - Dra...
Implement directed graph.
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- Directed Graph, Topological Sorting
- 1145. Data Structure - Topological Sorting1145. Data Structure - Topological Sorting
Topological Sorting and related questions.
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- Topological Sorting
- 1146. Data Structure - Minimum Spanning Tree - Draft1146. Data Structure - Minimum Spanning Tre...
Implement minimum spanning tree.
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- MST
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- 1203. Algorithm - Bit Manipulation1203. Algorithm - Bit Manipulation
Bit Manipulation.
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- Xor, Shifting
- 1211. Algorithm - Binary Search1211. Algorithm - Binary Search
Binary search template.
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- Binary Search
- 1212. Algorithm - Two Pointers1212. Algorithm - Two Pointers
Two pointers technique.
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- Two Pointers
- 1213. Algorithm - Divide and Conquer1213. Algorithm - Divide and Conquer
Divide and Conquer.
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- Divide, Conquer
- 1214. Algorithm - BFS and DFS1214. Algorithm - BFS and DFS
Use BSF and DSF to solve tree and graph problems.
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- BFS, DFS
- 1215. Algorithm - Combination and Permutation1215. Algorithm - Combination and Permutati...
Implement DFS for combination, permutation and subset.
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- Combination, Permutation, Subset
- 1217. Algorithm - Union Find1217. Algorithm - Union Find
Use Union-Find approach for solve disjoint set problems.
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- Disjoint Set, Union, Find
- 1221. Algorithm - Dynamic Programming1221. Algorithm - Dynamic Programming
Introduce dynamic programming.
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- DP
- 1222. Algorithm - Sequence DP1222. Algorithm - Sequence DP
Introduce dynamic programming.
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- DP
- 1223. Algorithm - Two Sequences DP1223. Algorithm - Two Sequences DP
Introduce dynamic programming.
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- DP
- 1224. Algorithm - Matrix DP1224. Algorithm - Matrix DP
Introduce dynamic programming.
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- DP
- 1225. Algorithm - Knapsack Problems1225. Algorithm - Knapsack Problems
Knapsack problems.
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- DP, Knapsack
- 1231. Algorithm - Sweep Line1231. Algorithm - Sweep Line
Sweep line approach for solving interval problems.
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- Sweep Line
- 1232. Algorithm - Sqrt Decomposition1232. Algorithm - Sqrt Decomposition
Implement Sqrt Decomposition for range search problems.
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- Sqrt Decomposition
- 1233. Algorithm - Minimax Algorithm - Draft1233. Algorithm - Minimax Algorithm - Draft
Implement Minimax algorithm.
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- Minimax
- 1235. Algorithm - Map Reduce - Draft1235. Algorithm - Map Reduce - Draft
Implement Map Reduce.
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- Map, Reduce
- 1236. Algorithm - Pre Sum - Draft1236. Algorithm - Pre Sum - Draft
Presum for multiple queries.
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- Pre sum
- 1239. Algorithm - Random1239. Algorithm - Random
Implement solutions for Random questions
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- String, Array
- 1240. Algorithm - Coordinate1240. Algorithm - Coordinate
Coordinate questions.
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- String, Array
- 1241. Algorithm - Math1241. Algorithm - Math
Common approaches for solving string and array problems
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- String, Array
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1301. Algorithm - Templates1301. Algorithm - TemplatesTemplates for algorithms solutions.
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- Algorithm
- 1302. Algorithm - Best Practice1302. Algorithm - Best Practice
Useful tricks for solving algorithms problems
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- Algorithm
- 1303. Algorithm - Java Best Practice1303. Algorithm - Java Best Practice
Useful Java tricks.
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- Java, Stream, Regex
- 1304. Algorithm - Useful Math Knowledge1304. Algorithm - Useful Math Knowledge
Useful math knowledge for algorithm problems.
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- Math, GCD
- 1305. Algorithm - Template for Subset Problems1305. Algorithm - Template for Subset Probl...
Introduce how the Subset template comes up.
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- Algorithm, Subsets
- 1306. Algorithm - Serialize and Deserialize Tree1306. Algorithm - Serialize and Deserialize...
Serialize and Deserialize Binary Tree, Binary Search Tree and N-ary Tree
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- Tree, BST, NaryTree
- 1307. Algorithm - Chi squared test for randomness1307. Algorithm - Chi squared test for rand...
Chi-squared test.
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- Random
- 1311. Algorithm - Problem List at LeetCode1311. Algorithm - Problem List at LeetCode
Problem List at LeetCode.
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- Algorithm, Leetcode
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1401. Problem - Custom List1401. Problem - Custom ListImplement custom array list and linked list.
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- List, Stack, Queue
- 1402. Problem - Word Counter1402. Problem - Word Counter
Count the number of words in file.
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- Word Counter
- 1403. Problem - Image Cache1403. Problem - Image Cache
Implement a cache for storing images.
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- Image Cache
- 1404. Problem - Random ID1404. Problem - Random ID
Implement a random id generator.
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- Random ID
- 1405. Problem - Custom Thread Pool1405. Problem - Custom Thread Pool
Implement a thread pool with blocking queue.
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- Thread Pool, BlockingQueue
- 1406. Problem - Versioned Key‐Value Store1406. Problem - Versioned Key‐Value Store
Implement a versioned Key‐Value store data structure.
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- Key‐Value
- 1407. Problem - Word Rank1407. Problem - Word Rank
Implement data structure for searching word based on rank.
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- Prefix
- 1408. Problem - Number in Base Representation1408. Problem - Number in Base Representati...
Convert number into different base representation.
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- Base Representation