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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.

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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