LeetCode
I classify 200 leetcode problems into some categories and upload my code to who concern
WEEK 1
| # | Title | Difficulty |
|---|---|---|
| Array | ||
| 15 | 3Sum | Medium |
| 1324 | Print Words Vertically | Medium |
| 566 | Reshape the Matrix | Easy |
| 763 | Partition Labels | Medium |
WEEK 2
| # | Title | Difficulty |
|---|---|---|
| Two Pointers | ||
| 350 | Intersection of Two Arrays II | Easy |
| 560 | Subarray Sum Equals K | Medium |
| 1234 | Replace the Substring for Balanced String | Medium |
| 632 | Smallest Range Covering Elements from K Lists | Hard |
| 3 | Longest Substring Without Repeating Characters | Medium |
| 11 | Container With Most Water | Medium |
| 283 | Move Zeroes | Easy |
WEEK 3
| # | Title | Difficulty |
|---|---|---|
| STACK AND QUEUE | ||
| 1249 | Minimum Remove to Make Valid Parentheses | Medium |
| 856 | Score of Parentheses | Medium |
| 946 | Validate Stack Sequences | Medium |
| 609 | Find Duplicate File in System | Medium |
| 503 | Next Greater Element II | Medium |
| 1047 | Remove All Adjacent Duplicates In String | EASY |
WEEK 4
| # | Title | Difficulty |
|---|---|---|
| GREEDY | ||
| 122 | Best Time to Buy and Sell Stock II | Easy |
| 392 | Is Subsequence | Easy |
| 1029 | Two City Scheduling | Easy |
| 406 | Queue Reconstruction by Height | Medium |
| 921 | Minimum Add to Make Parentheses Valid | Medium |
| 1338 | Reduce Array Size to The Half | Medium |
WEEK 5
| # | Title | Difficulty |
|---|---|---|
| HEAP | ||
| 378 | Kth Smallest Element in a Sorted Matrix | Medium |
| 659 | Split Array into Consecutive Subsequences | Medium |
| 692 | Top K Frequent Words | Medium |
| 973 | K Closest Points to Origin | Medium |
| 1054 | Distant Barcodes | Medium |
| 218 | The Skyline Problem | Hard |
| 857 | Minimum Cost to Hire K Workers | Hard |
WEEK 6
| # | Title | Difficulty |
|---|---|---|
| LINKED LIST | ||
| 21 | Merge Two Sorted Lists | Easy |
| 234 | Palindrome Linked List | Easy |
| 24 | Swap Nodes in Pairs | Medium |
| 86 | Partition List | Medium |
| 92 | Reverse Linked List II | Medium |
| 148 | Sort List | Medium |
| 430 | Flatten a Multilevel Doubly Linked List | Medium |
| 445 | Add Two Numbers II | Medium |
| 725 | Split Linked List in Parts | Medium |
| 1019 | Next Greater Node In Linked List | Medium |
WEEK 7
GRAPH
- Leetcode 1387. Sort Integers by The Power Value [Medium - 2 Point]
https://leetcode.com/problems/sort-integers-by-the-power-value/
WEEK 8
| # | Title | Difficulty |
|---|---|---|
| BFS | ||
| 417 | Pacific Atlantic Water Flow | Medium |
| 529 | Minesweeper | Medium |
| 752 | Open the Lock | Medium |
| 909 | Snakes and Ladders | Medium |
| 1129 | Shortest Path with Alternating Colors | Medium |
| 1162 | As Far from Land as Possible | Medium |
| 1391 | Check if There is a Valid Path in a Grid | Medium |
| 490 | The Maze | Medium |
| 505 | The Maze II | Medium |
| 499 | The Maze III | Medium |
WEEK 9
| # | Title | Difficulty |
|---|---|---|
| DFS | ||
| 695 | Max Area of Island | Medium |
| 1254 | Number of Closed Islands | Medium |
| 130 | Surrounded Regions | Medium |
| 934 | Shortest Bridge | Medium |
| 841 | Keys and Rooms | Medium |
| 1306 | Jump Game III | Medium |
| 399 | Evaluate Division | Medium |
| 785 | Is Graph Bipartite? | Medium |
| 133 | Clone Graph | Medium |
| 207 | Course Schedule | Medium |
| 210 | Course Schedule II | Medium |
| 802 | Find Eventual Safe States | Medium |
| 1462 | Course Schedule IV | Medium |
WEEK 10
| # | Title | Difficulty |
|---|---|---|
| DJISKTRA | ||
| 1135 | Connecting Cities With Minimum Cost | Medium |
| 743 | Network Delay Time | Medium |
WEEK 11
| # | Title | Difficulty |
|---|---|---|
| UNION FIND | ||
| 323 | Number of Connected Components in an Undirected Graph | Medium |
| 1319 | Number of Operations to Make Network Connected | Medium |
| 128 | Longest Consecutive Sequence | Hard |
| 765 | Couples Holding Hands | Hard |
| 778 | Swim in Rising Water | Hard |
| 1168 | Optimize Water Distribution in a Village | Hard |
| 209 | Minimum Size Subarray Sum | Medium |
WEEK 12
| # | Title | Difficulty |
|---|---|---|
| TREE | ||
| 700 | Search in a Binary Search Tree | Easy |
| 559 | Maximum Depth of N-ary Tree | Easy |
| 1022 | Sum of Root To Leaf Binary Numbers | Easy |
| 872 | Leaf-Similar Trees | Easy |
| 637 | Average of Levels in Binary Tree | Easy |
| 100 | Same Tree | Easy |
| 94 | Binary Tree Inorder Traversal | Medium |
| 513 | Find Bottom Left Tree Value | Medium |
| 515 | Find Largest Value in Each Tree Row | Medium |
| 144 | Binary Tree Preorder Traversal | Medium |
| 102 | Binary Tree Level Order Traversal | Medium |
| 199 | Binary Tree Right Side View | Medium |
| 366 | Find Leaves of Binary Tree | Medium |
| 814 | Binary Tree Pruning | Medium |
| 1325 | Delete Leaves With a Given Value | Medium |
| 606 | Construct String from Binary Tree | Easy |
| 543 | Diameter of Binary Tree | Easy |
| 863 | All Nodes Distance K in Binary Tree | Medium |
| 1245 | Tree Diameter | Medium |
WEEK 13
| # | Title | Difficulty |
|---|---|---|
| BINARY SEARCH TREE | ||
| 653 | Two Sum IV - Input is a BST | Easy |
| 230 | Kth Smallest Element in a BST | Medium |
| 449 | Serialize and Deserialize BST | Medium |
| 538 | Convert BST to Greater Tree | Easy |
| 1038 | Binary Search Tree to Greater Sum Tree | Medium |
| 1382 | Balance a Binary Search Tree | Medium |
WEEK 14
| # | Title | Difficulty |
|---|---|---|
| BINARY TREE | ||
| 1351 | Count Negative Numbers in a Sorted Matrix | Easy |
| 875 | Koko Eating Bananas | Medium |
| 287 | Find the Duplicate Number | Medium |
| 153 | Find Minimum in Rotated Sorted Array | Medium |
| 33 | Search in Rotated Sorted Array | Medium |
| 50 | Pow(x, n) | Medium |
| 1201 | Ugly Number III | Medium |
| 29 | Divide Two Integers | Medium |
| 35 | Search Insert Position | Easy |
WEEK 15
| # | Title | Difficulty |
|---|---|---|
| MATH | ||
| 7 | Reverse Integer | Easy |
| 2 | Add Two Numbers | Medium |
| 553 | Optimal Division | Medium |
| 1362 | Closest Divisors | Medium |
| 1006 | Clumsy Factorial | Medium |
| 592 | Fraction Addition and Subtraction | Medium |
| 640 | Solve the Equation | Medium |
| 279 | Perfect Squares | Medium |
| 12 | Integer to Roman | Medium |
| 866 | Prime Palindrome | Medium |
| 223 | Rectangle Area | Medium |
| 1227 | Airplane Seat Assignment Probability | Medium |
| 1230 | Toss Strange Coins | Medium |
| 1093 | Statistics from a Large Sample | Medium |
| 1017 | Convert to Base -2 | Medium |
3 Dec 14, 2022
27 Sep 17, 2022
13 Jul 21, 2022
147 Dec 01, 2022
41 Jan 22, 2021
82 Nov 18, 2022
51 Jan 09, 2023
35 Nov 12, 2022
5 Nov 27, 2022
4 Sep 03, 2021
3 Jan 04, 2022
1.4k Jan 08, 2023
1 Jan 18, 2022
4 May 25, 2022
8 May 23, 2022
1 Dec 12, 2021
1 Dec 29, 2021
3 Sep 19, 2021
42 May 28, 2021
6 May 04, 2022