Leetcode solutions
Introduction
General Conclusion
Count Student Number in Dept(SQL)
arrays
Best Time to Buy and Sell Stock II
Best Time to Buy and Sell Stock III
4sum
3sum
2sum
Subarray Problems
Maximum Subarray
325. Maximum Size Subarray Sum Equals k
209. Minimum Size Subarray Sum
152. maximum product subarray
523. Continuous Subarray Sum
Maximum Average Subarray II
Heap Problems
Kth Largest Element in an Array
Meeting Rooms II
Top K Frequent Elements
Ugly Number II
Heapify
Heap sort
Linked List
Remove Duplicates from Sorted List II
Super Ugly Number
Math
ugly number
Majority Number II
Graph (BFS, DFS)
Topological Sort, DFS, Edge Classification
Course Schedule II
Course Schedule
Longest Increasing Path in a Matrix
Alien Dictionary
BFS
Clone Graph
Copy List with Random Pointers
The Maze
The Maze II
Word Ladder
Word Ladder II
Nearest Exit (BFS)
Minimum Genetic Mutation (BFS)
DFS Search: subsets & permutation
Subsets
Subsets II
46. Permutations
Permutations II
Letter Combinations of a Phone Number
Combination Sum
Combination Sum II
Tree
Level Order Traversal
Valid BST
Convert Sorted Array to Binary Search Tree
Dynamic Programming
Edit Distance
Decode Ways
Regular Expression Matching
Kth Smallest Element in a Sorted Matrix
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