Why another algorithm tutorial ?

Numerous implementations of popular algorithms abound across various online platforms and blogs. While these resources serve their purpose well, my intention is not to supplant them. Rather, I recognize that for novice programmers, comprehension often comes more readily through visual aids such as videos rather than through traditional written materials.

While existing resources excel at teaching algorithms, few focus on techniques for long-term retention and efficient recall. Additionally, the ability to confidently discern problem-solving patterns is crucial. My aim is not to overwhelm with a plethora of algorithms, but rather to provide concise notes and visual aids for key algorithms, facilitating rapid review.

All diagrams presented herein are original creations, meticulously designed to enhance comprehension and recall. Crafting these aids required considerable effort, and I kindly request attribution if this content is reproduced elsewhere.

• Two Pointers
  • Sort Colors
  • Longest Palindromic Substring
• Binary Search
  • Valid Perfect Square
  • Search in Rotated Sorted Array
    • Search in Rotated Sorted Array II
  • Find K Closest Elements
  • Median of Two Sorted Arrays
• Sliding Window
  • Longest Substring Without Repeating Characters (Classic Sliding Window Problem)
  • Find Maximum in Sliding Window
  • Minimum Window Substring
  • Longest Repeating Character Replacement
• Linked List
  • Reorder List
  • Remove Linked List Elements
  • Add Two Numbers
  • Swap Nodes in Pairs
  • Reverse Nodes in K-Group
  • Sort List
• Tree
  • Balanced Binary Tree
  • Count Good Nodes in Binary Tree
  • Merge Two Binary Trees
  • Convert Sorted Array to Binary Search Tree
  • Validate Binary Search Tree
  • Sum Root to Leaf Numbers
  • Binary Tree Right Side View
  • Kth Smallest Element in a BST
  • Diameter of a Binary Tree
  • Construct Binary Tree from PreOrder and InOrder Traversal
  • Same Tree
  • Serialize and Deserialize Binary Tree
  • Trim a Binary Search Tree
  • Path Sum
  • Binary Tree Maximum Path Sum
  • Flatten Binary Tree to Linked List
• Graph
  • Network Delay Time
    • Swim in Rising Water
    • Walls and Gates
    • Rotting Oranges
    • Shortest Bridge
  • Clone Graph
  • Graph Valid Tree
  • Island Perimeter
  • Number of Islands
  • Pacific Atlantic Water Flow
    • Longest Increasing Path in a Matrix
  • Reorder Routes to Lead to City Zero
  • Surrounded Regions
  • Count Sub Islands
  • Word Ladder
  • Course Schedule
    • Course Schedule II
• Matrices
  • Set Matrix Zeroes
  • Rotate Image
  • Spiral Matrix
• Others
  • First Missing Positive
  • Maximum Product Subarray
• Backtracking
  • N-Queens
  • Target Sum
  • House Robber III
  • Word Search
    • Word Search II
  • Restore IP Addresses
  • Matchsticks to Square
  • Letter Combinations of a Phone Number
  • Generate Parentheses
  • Find Unique Binary String
    • Combinations
  • Combination Sum
    • Combination Sum II
    • Partition to K Equal Sum Subsets
  • Reconstruct Itinerary
  • Subsets
    • Subsets II
  • Permutations
    • Permutations II
• Greedy Techniques
  • Jump Game
  • Jump Game II
  • Two City Scheduling
  • Gas Stations
  • Boats to Save People
• Dynamic Programming
  • Climbing Stairs
  • Min Cost Climbing Stairs
  • House Robber I & II
  • Coin Change
  • Word Break
  • Longest Increasing Subsequence
  • Partition Equal Subset Sum
  • Best Time to Buy and Sell Stock with Cooldown