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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

Asymptotic Analysis

Comparing Algorithms Example: Measuring Time Complexity—Single Loop Example: Measuring Time Complexity—Nested Loop Introduction to Asymptotic Analysis and Big O Other Common Asymptotic Notations and Why Big O Trumps Them Useful Formulas Common Complexity Scenarios Challenge: Big O of a Nested Loop with Addition Solution: Big O of a Nested Loop with Addition Challenge: Big O of a Nested Loop with Subtraction Solution: Big O of a Nested Loop with Subtraction Challenge: Big O of a Nested Loop with Multiplication Solution: Big O of a Nested Loop with Multiplication Challenge: Nested Loop with Multiplication (Basic)Solution: Nested Loop with Multiplication (Basic)Challenge: Nested Loop with Multiplication (Intermediate)Solution: Nested Loop with Multiplication (Intermediate)Challenge: Nested Loop with Multiplication (Advanced)Solution: Nested Loop with Multiplication (Advanced)Challenge: Nested Loop with Multiplication (Pro)Solution: Nested Loop with Multiplication (Pro)Quiz on Complexity

Sorting and Searching

Selection Sort, Bubble Sort, and Insertion Sort Merge Sort Quick Sort Overview of Sorting Algorithms Searching Algorithms Challenge: Find Two Numbers That Add Up to n Solution: Find Two Numbers That Add Up to n Challenge: Search in a Rotated Array Solution: Search in a Rotated Array Challenge: Group Anagrams Solution: Group Anagrams Challenge: Arrange a Binary Array Solution: Arrange a Binary Array Challenge: Find the Maximum Product of Two Integers in an Array Solution: Find the Maximum Product of Two Integers in an Array Challenge: Find Duplicates in an Array with No Repetition Solution: Find Duplicates in an Array with No Repetition Challenge: Search in a 2D Array Solution: Search in a 2D Array Challenge: Search Position Solution: Search Position Challenge: The Dutch National Flag Problem Solution: The Dutch National Flag Problem Quiz on Sorting and Searching

Graph Algorithms

Introduction to Graph Algorithms and Implementation Challenge: Implement Breadth-First Graph Traversal Solution: Breadth-First Graph Traversal Challenge: Implement Depth-First Graph Traversal Solution: Depth-First Graph Traversal Challenge: Calculate the Number of Nodes in a Graph Level Solution: Calculate the Number of Nodes in a Graph Level Challenge: Transpose a Graph Solution: Transpose a Graph Challenge: Find All Paths Between Two Nodes Solution: Find All Paths Between Two Nodes Challenge: Check If a Graph Is Strongly Connected Solution: Check If a Graph Is Strongly Connected Challenge: Find All Connected Components in a Graph Solution: Find All Connected Components in a Graph Challenge: Remove an Edge Solution: Remove an Edge Challenge: Detect a Cycle in a Graph Solution: Detect a Cycle in a Graph Quiz on Graph Algorithms

Greedy Algorithms

Greedy Algorithms: A Deep Dive

Challenge: Counting Money

Solution: Counting Money

Challenge: Connecting n Pipes with Minimum Cost

Solution: Connecting n Pipes with Minimum Cost

Challenge: Find the Egyptian Fraction’s Denominators

Solution: Find the Egyptian Fraction

Challenge: Find the Minimum Platforms Required for a Station

Solution: Find the Minimum Platforms Required for a Station

Challenge: Find the Largest Number Possible

Solution: 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: The 0/1 Knapsack Problem Solution: The 0/1 Knapsack Problem Challenge: The Staircase Problem Solution: The Staircase Problem Challenge: The Partition Problem Solution: The Partition Problem Challenge: Longest Common Substring Solution: Longest Common Substring Challenge: Shortest Common Supersequence (SCS)Solution: Shortest Common Supersequence (SCS)Challenge: Longest Palindromic Subsequence Solution: Longest Palindromic Subsequence Challenge: The Coin Change Problem Solution: The Coin Change Problem Challenge: Egg Dropping Problem Solution: Egg Dropping Problem Challenge: Interleaving Strings Solution: Interleaving Strings Challenge: The Edit Distance Problem Solution: The Edit Distance Problem Quiz on Dynamic Programming

Divide and Conquer

Introduction to Divide and Conquer With Binary Search Pascal’s Triangle Challenge: Euclidean Algorithm Solution: Euclidean Algorithm Challenge: Find the Peak Element Solution: Find the Peak Element Challenge: Maximum Sum Subarray of Size k Solution: Maximum Sum Subarray of Size k Challenge: Collect Coins in Minimum Steps Solution: Collect Coins in Minimum Steps Challenge: Find the Floor and Ceil of a Number in a Sorted Array Solution: Find the Floor and Ceil of a Number in a Sorted Array Challenge: Missing Number in a Sorted Array Solution: Missing Number in a Sorted Array Challenge: Find the Closest Number Solution: Find the Closest Number Challenge: Shuffle Integers Solution: Shuffle Integers Challenge: Inversion Count in an Array Solution: Inversion Count in an Array Quiz on Divide and Conquer

Conclusion

Wrapping Up Where to Go from Here

Challenge: Counting Money

Solve the counting money problem.

We'll cover the following

Problem statement
Coding exercise

Problem statement

Given an infinite number of quarters (25 cents), dimes (10 cents), nickels (5 cents), and pennies (1 cent), implement a function to calculate the minimum number of coins to represent $v$ cents.

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