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Algorithms for Coding Interviews in C++

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Introduction

Who This Course Is For

Learning Outcomes

Algorithmic Paradigms

Brute Force Greedy Algorithms Divide and Conquer Dynamic Programming

Introduction to Complexity Measures

Comparing Algorithms Example 1: Measuring Time Complexity of a Single Loop Algorithm Example 2: Time Complexity of an Algorithm With Nested Loops Introduction to Asymptotic Analysis and Big O Other Common Asymptotic Notations and Why Big O Trumps Them Useful Formulae Common Complexity Scenarios Challenge 1: Big (O) of Nested Loop with Addition Solution Review: Big (O) of Nested Loop with Addition Challenge 2: Big (O) of Nested Loop with Subtraction Solution Review: Big (O) of Nested Loop with Subtraction Challenge 3: Big (O) of Nested Loop with Multiplication Solution Review: Big (O) of Nested Loop with Multiplication Challenge 4: Nested Loop with Multiplication (Basic)Solution Review: Nested Loop with Multiplication (Basic)Challenge 5: Nested Loop with Multiplication (Intermediate)Solution Review: Nested Loop with Multiplication (Intermediate)Challenge 6: Nested Loop with Multiplication (Advanced)Solution Review: Nested Loop with Multiplication (Advanced)Challenge 7: Nested Loop with Multiplication (Pro)Solution Review: Nested Loop with Multiplication (Pro)Complexity Quiz: Test your understanding of Complexity

Sorting & Searching

Selection Sort, Bubble Sort, & Insertion Sort Merge Sort Quicksort Overview of Sorting Algorithms Searching Algorithms Challenge 1: Find Two Numbers that Add up to "s"Solution Review: Find Two Numbers that Add up to "s"Challenge 2: Search in a Rotated Array Solution Review: Search in a Rotated Array Challenge 3: Group Anagrams Solution Review: Group Anagrams Challenge 4: Find the Median of Two Sorted Arrays Solution Review: Find the Median of Two Sorted Arrays Challenge 5: Find Duplicates in Array Solution Review: Find Duplicates in Array Challenge 6: Search in Sorted Matrix Solution Review: Search in Sorted Matrix Challenge 7: Count Element Occurrence Solution Review: Count Element Occurrence Challenge 8: Search Insert Position Solution Review: Search Insert Position Challenge 9: Sparse Search Solution Review: Sparse Search Challenge 10: 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 Given Graph Level Solution Review: Calculate the Number of Nodes in a Given Graph Level Challenge 4: Print the Transpose of a Graph Solution Review: Print the Transpose of a Graph Challenge 5: Print all Paths Between Two Nodes Solution Review: Print all Paths Between Two Nodes Challenge 6: Check If Graph is Strongly Connected Solution Review: Check if a Graph is Strongly Connected Challenge 7: Print all Connected Components in a Graph Solution Review: Print all Connected Components of a Graph Challenge 8: Check if Removing Edge Creates Components in Graph Solution Review: Check if Removing Given Edge Creates Components in Graph Challenge 9: Check If Given Graph is Bipartite Solution Review: Check If Given Graph is Bipartite Challenge 10: Topological Sorting of a Graph Solution Review: Topological Sorting of a Graph Quiz on Graph Algorithms

Greedy Algorithms

Activity Scheduling Problem 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 Solution Review: Find the Egyptian Fraction Challenge 4: Find Minimum Number of Platforms Required for a Train Station Solution Review: Find Minimum Number of Platforms Required for a Train Station Challenge 5: Help the Policemen Catch the thieves!Solution Review: Help the Policemen Catch the thieves!Challenge 6: Fractional Knapsack Problem Solution Review: Fractional Knapsack Problem Challenge 7: Largest Number with Given Number of Digits and Sum of Digits Solution Review: Largest Number with Given Number of Digits and Sum of Digits Challenge 8: Graph Coloring Solution Review: Graph Coloring Challenge 9: Find the Minimum Spanning Tree of the Given Graph Solution Review: Kruskal’s Solution to Minimum Spanning Tree Solution Review: Prim's Solution to Minimum Spanning Trees Challenge 10: Find Shortest Distance of Each Node from the Source Solution Review: Shortest Distance of Each Node from the Source Quiz on Greedy Algorithms

Dynamic Programming

Calculating Fibonnacci 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 2: Staircase Problem Solution Review: Staircase Problem Challenge 3: The Partition Problem Solution Review: The Partition Problem Challenge 4: Longest Common Substring Solution Review: Longest Common Substring Challenge 5: Shortest Common Supersequence Solution Review: Shortest Common Supersequence Challenge 6: Longest Palindromic Subsequence Solution Review: Longest Palindromic Subsequence Challenge 7: The Coin Change Problem Solution Review: 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: Peak Element Solution Review: Peak Element Challenge 3: Maximum Subarray Sum Solution Review: Maximum Subarray Sum Challenge 4: Merge a Number of Sorted Arrays Solution Review: Merge a Number of Sorted Arrays Challenge 5: Collect Coins in Minimum Steps Solution Review: Collect Coins in Minimum Steps Challenge 6: Find The Closest Number Solution Review: Find Closest Number Challenge 7: Closest Pair of Points Solution Review: Closest Pair of Points Challenge 8: Missing Number in Sorted Array Solution Review: Missing Number in Sorted Array Challenge 9: Binary Search on Singly Linked List Solution Review: Binary Search on Singly Linked List Challenge 10: Shuffle Integers Solution Review: Shuffle Integers Quiz on Divide and Conquer

Appendix: Auxiliary Source Code

STL Classes Linked List Array Functions Graph

Conclusion

Overview Where to Go from Here

Learning Outcomes

A brief summary of what you would learn in this course

In this course, you will learn about:

Major algorithmic paradigms
Measuring time complexities of algorithms
Searching and sorting in different data structures
Graphs, graph traversals, and other important graph algorithms
Greedy Algorithms
The dynamic programming technique to efficiently solve problems
The Divide and Conquer method, i.e. solving multiple subparts of a problem to solve the bigger problem

Let’s dive right into it!