Topography / DSA

70 lessons and 433 connections between them, based on the cross-references in each lesson. Lines show references. For reading order, seethe DSA track page.

• Complexity & Big-O13 lessons link here
• Arrays & Strings10 lessons link here
• Hashing15 lessons link here
• Linked Lists, Stacks & Queues15 lessons link here
• Trees (BST, balancing, heaps, tries)18 lessons link here
• Graphs (BFS, DFS, Dijkstra, topological sort)10 lessons link here
• Sorting & Searching11 lessons link here
• Recursion & Dynamic Programming14 lessons link here
• Algorithm Design Patterns11 lessons link here
• Capstone: Attack an Unseen Problem4 lessons link here
• Dynamic Programming, Worked (filling the table)12 lessons link here
• Shortest Paths, Worked (Dijkstra, Bellman-Ford, A*)6 lessons link here
• Interview Patterns (recognize the shape, apply the template)12 lessons link here
• String Algorithms (finding the needle)6 lessons link here
• Trees, Worked (rotations, B-trees, range trees)7 lessons link here
• Complexity Theory (when problems are hard)7 lessons link here
• Bit Manipulation (thinking in bits)8 lessons link here
• Git's diff (Myers' algorithm) - the case study3 lessons link here
• Clinic #01 - Reverse a Linked List7 lessons link here
• Clinic #02 - Climbing Stairs9 lessons link here
• Clinic #03 - Coin Change8 lessons link here
• Clinic #04 - Meeting Rooms II5 lessons link here
• Clinic #05 - Two Sum10 lessons link here
• Clinic #06 - Longest Substring Without Repeating Characters7 lessons link here
• Clinic #07 - Valid Parentheses4 lessons link here
• Clinic #08 - Daily Temperatures6 lessons link here
• Clinic #09 - Maximum Depth of Binary Tree6 lessons link here
• Clinic #10 - Diameter of Binary Tree4 lessons link here
• Clinic #11 - Binary Search7 lessons link here
• Clinic #12 - Search in Rotated Sorted Array6 lessons link here
• Clinic #13 - Subsets4 lessons link here
• Clinic #14 - Combination Sum4 lessons link here
• Clinic #15 - Number of Islands6 lessons link here
• Clinic #16 - Course Schedule6 lessons link here
• Clinic #17 - Container With Most Water7 lessons link here
• Clinic #18 - 3Sum7 lessons link here
• Clinic #19 - Kth Largest Element in an Array7 lessons link here
• Clinic #20 - Top K Frequent Elements8 lessons link here
• Clinic #21 - Unique Paths4 lessons link here
• Clinic #22 - Longest Common Subsequence6 lessons link here
• Foundations #01 - Complexity (Big-O ka poora naksha)14 lessons link here
• Foundations #02 - Recursion → Memo → Table (DP ka engine)11 lessons link here
• Foundations #03 - Arrays, Do-Pointer & Sliding Window6 lessons link here
• Foundations #04 - Hashing (O(1) "yaad")5 lessons link here
• Foundations #05 - Sorting & Searching9 lessons link here
• Foundations #06 - Stacks & Queues11 lessons link here
• Foundations #07 - Linked Lists & Pointers4 lessons link here
• Foundations #08 - Trees & Recursion7 lessons link here
• Foundations #09 - Graphs4 lessons link here
• Foundations #10 - Dynamic Programming (1D & 2D in practice)4 lessons link here
• Clinic #23: Implement Trie3 lessons link here
• Clinic #24: Word Search II4 lessons link here
• Clinic #25: Network Delay Time1 lesson links here
• Clinic #26: Redundant Connection3 lessons link here
• Clinic #27: Jump Game2 lessons link here
• Clinic #28: Merge Intervals3 lessons link here
• Clinic #29: Non-overlapping Intervals4 lessons link here
• Clinic #30: Rotate Image2 lessons link here
• Clinic #31: Pow(x, n)4 lessons link here
• Clinic #32: Single Number3 lessons link here
• Clinic #33: Koko Eating Bananas4 lessons link here
• Clinic #34: Linked List Cycle2 lessons link here
• The Practice Ladders1 lesson links here
• Trees, asked five ways0 lessons link here
• Why the loop is right0 lessons link here
• The clock that wraps around0 lessons link here
• DP, five more shapes0 lessons link here
• Build a diff: the table1 lesson links here
• Build a diff: the greedy walk1 lesson links here
• Build an autocomplete0 lessons link here