Archives

2025

10 May Leetcode 322. Coin Change
09 May Leetcode 91. Decode Ways
07 May Leetcode 647. Palindromic Substrings
06 May Leetcode 5. Longest Palindromic Substring
05 May Leetcode 213. House Robber II
02 May Leetcode 198. House Robber
01 May Leetcode 1137. N-th Tribonacci Number
29 Apr Leetcode 127. Word Ladder
28 Apr Leetcode 310. Minimum Height Trees
26 Apr Leetcode 399. Evaluate Division
24 Apr Leetcode 684. Redundant Connection
23 Apr Leetcode 1462. Course Schedule IV
22 Apr Leetcode 210. Course Schedule II
18 Apr Leetcode 207. Course Schedule
17 Apr Leetcode 752. Open the Lock
16 Apr Leetcode 130. Surrounded Regions
15 Apr Leetcode 417. Pacific Atlantic Water Flow
14 Apr Leetcode 994. Rotting Oranges
13 Apr Leetcode 133. Clone Graph
12 Apr Leetcode 695. Max Area of Island
11 Apr Leetcode 200. Number of Islands
10 Apr Leetcode 997. Find the Town Judge
09 Apr Leetcode 953. Verifying an Alien Dictionary
08 Apr Leetcode 463. Island Perimeter
07 Apr Leetcode 212. Word Search II
06 Apr Leetcode 2707. Extra Characters in a String
05 Apr Leetcode 211. Design Add and Search Words Data Structure
04 Apr Leetcode 208. Implement Trie (Prefix Tree)
03 Apr Leetcode 140. Word Break II
02 Apr Leetcode 52. N-Queens II
01 Apr Leetcode 51. N-Queens
28 Mar Leetcode 698. Partition to K Equal Sum Subsets
27 Mar Leetcode 473. Matchsticks to Square
26 Mar Leetcode 17. Letter Combinations of a Phone Number
25 Mar Leetcode 131. Palindrome Partitioning
24 Mar Leetcode 79. Word Search
24 Mar Leetcode 46. Permutations
23 Mar Leetcode 90. Subsets II
22 Mar Leetcode 46. Permutations
21 Mar Leetcode 77. Combinations
20 Mar Leetcode 40. Combination Sum II
19 Mar Leetcode 39. Combination Sum
18 Mar Leetcode 78. Subsets
17 Mar Leetcode 1863. Sum of All Subset XOR Totals
16 Mar Leetcode 502. IPO
15 Mar Leetcode 295. Find Median from Data Stream
14 Mar Leetcode 1094. Car Pooling
13 Mar Leetcode 1405. Longest Happy String
12 Mar Leetcode 767. Reorganize String
11 Mar Leetcode 1834. Single-Threaded CPU
10 Mar Leetcode 355. Design Twitter
09 Mar Leetcode 621. Task Scheduler
08 Mar Leetcode 215. Kth Largest Element in an Array
07 Mar Leetcode 973. K Closest Points to Origin
06 Mar Leetcode 297. Serialize and Deserialize Binary Tree
05 Mar Leetcode 124. Binary Tree Maximum Path Sum
04 Mar Leetcode 1325. Delete Leaves With a Given Value
03 Mar Leetcode 337. House Robber III
02 Mar Leetcode 105. Construct Binary Tree from Preorder and Inorder Traversal
02 Mar Leetcode 230. Kth Smallest Element in a BST
28 Feb Leetcode 98. Validate Binary Search Tree
27 Feb Leetcode 1448. Count Good Nodes in Binary Tree
26 Feb Leetcode 427. Construct Quad Tree
25 Feb Leetcode 199. Binary Tree Right Side View
24 Feb Leetcode 102. Binary Tree Level Order Traversal
23 Feb Leetcode 450. Delete Node in a BST
22 Feb Leetcode 701. Insert into a Binary Search Tree
21 Feb Leetcode 235. Lowest Common Ancestor of a Binary Search Tree
20 Feb Leetcode 145. Binary Tree Postorder Traversal
19 Feb Leetcode 144. Binary Tree Preorder Traversal
18 Feb Leetcode 94. Binary Tree Inorder Traversal
18 Feb Making Fruit Box game (2)
17 Feb Leetcode 25. Reverse Nodes in k-Group
17 Feb Making Fruit Box game (1)
16 Feb Leetcode 23. Merge k Sorted Lists
15 Feb Leetcode 146. LRU Cache
14 Feb Leetcode 622. Design Circular Queue
13 Feb Leetcode 92. Reverse Linked List II
12 Feb Leetcode 287. Find the Duplicate Number
11 Feb Leetcode 2. Add Two Numbers
10 Feb Leetcode 138. Copy List with Random Pointer
09 Feb Leetcode 19. Remove Nth Node From End of List
08 Feb Leetcode 143. Reorder List
07 Feb Leetcode 1095. Find in Mountain Array
06 Feb Leetcode 4. Median of Two Sorted Arrays
05 Feb Leetcode 410. Split Array Largest Sum
04 Feb Leetcode 981. Time Based Key-Value Store
03 Feb Leetcode 81. Search in Rotated Sorted Array II
02 Feb Leetcode 33. Search in Rotated Sorted Array
01 Feb Leetcode 153. Find Minimum in Rotated Sorted Array
31 Jan Leetcode 1011. Capacity To Ship Packages Within D Days
30 Jan Leetcode 875. Koko Eating Bananas
29 Jan Leetcode 74. Search a 2D Matrix
28 Jan Leetcode 69. Sqrt(x)
27 Jan Leetcode 374. Guess Number Higher or Lower
26 Jan Leetcode 35. Search Insert Position
25 Jan Leetcode 84. Largest Rectangle in Histogram
24 Jan Leetcode 853. Car Fleet
24 Jan Leetcode 739. Daily Temperatures
23 Jan Leetcode 22. Generate Parentheses
23 Jan Leetcode 155. Min Stack
23 Jan Leetcode 150. Evaluate Reverse Polish Notation
22 Jan Leetcode 76. Minimum Window Substring
22 Jan Leetcode 239. Sliding Window Maximum
21 Jan Leetcode 567. Permutation in String
21 Jan Leetcode 424. Longest Repeating Character Replacement
21 Jan Leetcode 3. Longest Substring Without Repeating Characters
20 Jan Leetcode 42. Trapping Rain Water
19 Jan Leetcode 11. Container With Most Water
18 Jan Leetcode 167. Two Sum II - Input Array Is Sorted
18 Jan Leetcode 15. 3Sum
18 Jan How to handle Data, and Images(20) Web Crawling
17 Jan Leetcode 36. Valid Sudoku
17 Jan Leetcode 238. Product of Array Except Self
17 Jan Leetcode 128. Longest Consecutive Sequence
16 Jan Leetcode 49. Group Anagrams
16 Jan Leetcode 347. Top K Frequent Elements
16 Jan How to handle Data, and Images(19) Matplotlib Usage
16 Jan How to handle Data, and Images(18) Matplotlib Intro
15 Jan Leetcode 895. Maximum Frequency Stack
15 Jan How to handle Data, and Images(18) Pandas Usage
15 Jan How to handle Data, and Images(17) Pandas Operation and Functions
15 Jan How to handle Data, and Images(16) Pandas Introduction
14 Jan Leetcode 71. Simplify Path
14 Jan Leetcode 394. Decode String
14 Jan Captcha Hacking(5) - Automating to solve the Captcha problem
14 Jan Captcha Hacking(4) - Training with KNN Algorithm
14 Jan Captcha Hacking(3) - Data Cleaning
14 Jan Captcha Hacking(2) - Collecting Data and Analyzing
13 Jan Leetcode 901. Online Stock Span
13 Jan Leetcode 735. Asteroid Collision
13 Jan Captcha Hacking(1) - Defining the Problem
12 Jan Leetcode 682. Baseball Game
12 Jan Leetcode 232. Implement Queue using Stacks
12 Jan Leetcode 225. Implement Stack using Queues
12 Jan How to handle Data, and Images(15) Number Recognition
12 Jan How to handle Data, and Images(14) KNN Algorithm
11 Jan Leetcode 658. Find K Closest Elements
11 Jan How to handle Data, and Images(13) OpenCV Filtering
11 Jan How to handle Data, and Images(12) More Contours
10 Jan Leetcode 219. Contains Duplicate II
10 Jan Leetcode 209. Minimum Size Subarray Sum
09 Jan Leetcode 881. Boats to Save People
09 Jan Leetcode 189. Rotate Array
09 Jan Leetcode 18. 4Sum
09 Jan How to handle Data, and Images(9) OpenCV Trackbar
09 Jan How to handle Data, and Images(11) OpenCV Contours
09 Jan How to handle Data, and Images(10) Drawing Shapes
08 Jan Leetcode 88. Merge Sorted Array
08 Jan Leetcode 26. Remove Duplicates from Sorted Array
08 Jan How to handle Data, and Images(7) Merging Image
08 Jan How to handle Data, and Images(8) Image Thresholding
07 Jan Leetcode 680. Valid Palindrome II
07 Jan Leetcode 344. Reverse String
07 Jan Leetcode 1768. Merge Strings Alternately
07 Jan How to handle Data, and Images(6) Image Transformation
06 Jan Leetcode 41. First Missing Positive
06 Jan How to handle Data, and Images(5) OpenCV's Image Operation
06 Jan How to handle Data, and Images(4) Introduction To OpenCV
05 Jan Leetcode 560. Subarary Sum Equals K
05 Jan Leetcode 229. Majority Element II
05 Jan Leetcode 122. Best Time to Buy and Sell Stock II
05 Jan How to handle Data, and Images(3) - Numpy Usage
05 Jan How to handle Data, and Images(2) - Numpy and Math
04 Jan Leetcode 912. Sort an Array
04 Jan Leetcode 75. Sort Colors
04 Jan Leetcode 304. Range Sum Query 2D - Immutable
04 Jan How to handle Data, and Images(1) - How to use Numpy
03 Jan Leetcode 706. Design HashMap
03 Jan Leetcode 705. Design HashSet
03 Jan Leetcode 169. Majority Element
02 Jan Leetcode 27. Remove Element
02 Jan Leetcode 14. Longest Common Prefix
01 Jan Leetcode 1929. Concatenation of Array

2024

09 Dec Leetcode 746. Min Cost Climbing Stairs
09 Dec Leetcode 70. Climbing Stairs
06 Dec 703. Kth Largest Element in a Stream
06 Dec 1046. Last Stone Weight
04 Dec Algorithm Analysis (4) - Merge Sort
04 Dec Algorithm Analysis (5) - Binary Search
03 Dec Data Structure (2) - Stack, Queue
03 Dec Data Structure (3) - LinkedList
02 Dec Leetcode 572 - Subtree of Another Tree
02 Dec Leetcode 543: Diameter of Binary Tree
02 Dec Leetcode 226 - Invert Binary Tree
02 Dec Leetcode 110 - Balanced Binary Tree
02 Dec Leetcode 104: Maximum Depth of Binary Tree
02 Dec Leetcode 100 - Same Tree
01 Dec Data Structure (1) - Array
29 Nov Leetcode 21 - Merge Two Sorted Lists
29 Nov Leetcode 206 - Reverse Linked List
29 Nov Leetcode 141 - Linked List Cycle
27 Nov Leetcode 704. Binary Search
26 Nov Leetcode 20 - Valid Parentheses
25 Nov Leetcode 121 - Best Time to Buy and Sell Stock
24 Nov Leetcode 125 - Valid Palindrome
23 Nov Leetcode 242 - Valid Anagram
23 Nov Leetcode 217 - Contains Duplicate
22 Nov Leetcode 977 - Squares of a Sorted Array
21 Nov Leetcode 1 - Two Sum
20 Nov Leetcode 392 - Is Subsequence
17 Oct Algorithm Analysis (3) - Quick Sort
16 Oct Algorithm Analysis (2) - Insertion Sort
15 Oct Algorithm Analysis (1) - Selection Sort