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Algorithmic Paradigms

Brute Force Greedy Algorithms Divide and Conquer Dynamic Programming

Sorting and Searching

Selection Sort, Bubble Sort, and Insertion Sort Merge Sort Quick Sort Overview of Sorting Algorithms Searching Algorithms Challenge 1: Find Two Numbers that Add up to "n"Solution Review: Find Two Numbers that Add up to "n"Challenge 2: Search in a Rotated List Solution Review: Search in a Rotated List Challenge 4: Arrange a Binary List Solution Review: Arrange a Binary List Challenge 5: Find the Maximum Product of Two Integers in a List Solution Review: Find Maximum Product of Two Integers in a List Challenge 6: Find Duplicates in a List with No Repetition Solution Review: Find Duplicates in a List with No Repetition Challenge 7: Search in a 2D List Solution Review: Search in a 2D List Challenge 8: Search Position Solution Review: Search Position Challenge 9: Dutch National Flag Problem Solution Review: Dutch National Flag Problem Quiz on Sorting & Searching

Graph Algorithms

Introduction to Graph Algorithms and Implementation Challenge 1: Implement Breadth-First Graph Traversal Solution Review: Breadth-First Graph Traversal Challenge 2: Implement Depth-First Graph Traversal Solution Review: Depth-First Graph Traversal Challenge 3: Calculate the Number of Nodes in a Graph Level Solution Review: Calculate the Number of Nodes in a Graph Level Challenge 4: Transpose a Graph Solution Review: Transpose a Graph Challenge 5: Find all Paths between Two Nodes Solution Review: Find all Paths between Two Nodes Challenge 6: Check if a Graph is Strongly Connected Solution Review: Check if a Graph is Strongly Connected Challenge 7: Find All Connected Components in a Graph Solution Review: Find All Connected Components of a Graph Challenge 8: Remove an Edge Solution Review: Remove an Edge Challenge 9: Detect a Cycle in a Graph Solution Review: Detect a Cycle in a Graph Quiz on Graph Algorithms

Greedy Algorithms

Greedy Approach: A Deep Dive Challenge 1: Counting Money!Solution Review: Counting Money Challenge 2: Connecting n Pipes with Minimum Cost Solution Review: Connecting n Pipes with Minimum Cost Challenge 3: Find the Egyptian Fraction's Denominators Solution Review: Find the Egyptian Fraction Challenge 4: Find the Minimum Platforms Required for a Station Solution Review: Find Minimum Platforms Required for a Station Challenge 5: Find the Largest Number Possible Solution Review: Find the Largest Number Possible Quiz on Greedy Algorithms

Dynamic Programming

Calculating Fibonacci Numbers

Introducing Dynamic Programming with Fibonacci Numbers

Memoizing Fibonacci Numbers

Tabulating Fibonacci Numbers

Challenge 1: The 0/1 Knapsack Problem

Solution Review: The 0/1 Knapsack Problem

Challenge 4: Longest Common Substring

Solution Review: Longest Common Substring

Challenge 5: Shortest Common Supersequence(SCS)

Solution Review: Shortest Common Supersequence(SCS)

Challenge 6: Longest Palindromic Subsequence

Solution Review: Longest Palindromic Subsequence

Challenge 7: The Coin Change Problem

Solution Review: The Coin Change Problem

Challenge 8: Egg Dropping Problem

Solution Review: Egg Dropping Problem

Challenge 9: Strings Interleaving

Solution Review: Strings Interleaving

Challenge 10: Edit Distance Problem

Solution Review: The Edit Distance Problem

Quiz on Dynamic Programming

Divide and Conquer

Introduction to Divide and Conquer With Binary Search Pascal's Triangle Challenge 1: Euclidean Algorithm Solution Review: Euclidean Algorithm Challenge 2: Find the Peak Element Solution Review: Find the Peak Element Challenge 4: Collect Coins in Minimum Steps Solution Review: Collect Coins in Minimum Steps Challenge 5: Find the Floor and Ceil of a Number in a Sorted List Solution Review: Find Floor and Ceil of a Number in a Sorted List Challenge 6: Missing Number in a Sorted List Solution Review: Missing Number in a Sorted List Challenge 7: Find the Closest Number Solution Review: Find the Closest Number Challenge 8: Shuffle Integers Solution Review: Shuffle Integers Challenge 9: Inversion Count in a List Solution Review: Inversion Count in a List Quiz on Divide and Conquer

Conclusion

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Challenge 4: Longest Common Substring

Challenge 4: Longest Common Substring

Let's write some code to find the longest common substring.

Problem statement

Given two strings, s1 and s2, write a function that finds and returns the length of the longest substring of ...