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A Visual Introduction to Algorithms

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Intro to Algorithms

What is an algorithm and why should you care?

A Guessing Game

Binary Search

Binary Search Implementing Binary Search of an Array Challenge: Binary Search Running Time of Binary Search Quiz: Running time of binary search

Asymptotic Analysis

Introduction to Asymptotic notation Big-θ (Big-Theta) notation Functions in Asymptotic Notation Big-O notation Big-Ω (Big-Omega) notation Quiz: Asymptotic notation

Selection Sort

Sorting Challenge: Implement Swap Selection Sort Pseudocode Challenge: Find minimum in Subarray Challenge: Implement Selection Sort Analysis of Selection Sort

Insertion Sort

Insertion Sort Challenge: Insert a Value Before an Index in Sorted Order Insertion Sort pseudocode Challenge: Implement Insertion Sort Analysis of Insertion Sort

Recursion Algorithms

Recursion The factorial function Challenge: Iterative factorial Recursive factorial Challenge: Recursive factorial Properties of recursive algorithms Using recursion to determine whether a word is a palindrome Challenge: is a string a palindrome?Computing powers of a number Challenge: Recursive Powers The Sierpinski gasket

Towers of Hanoi

Towers of Hanoi Move three disks in Towers of Hanoi Towers of Hanoi, continued Challenge: Solve Hanoi recursively

Merge Sort

Divide and Conquer Algorithms Overview of Merge Sort Challenge: Implement Merge Sort Linear-time Merging Challenge: Implement Merge Analysis of Merge Sort

Quick Sort

Overview of Quicksort Challenge: Implement Quicksort Linear-time Partitioning Challenge: Implement Partition Analysis of Quicksort

Graphs

Describing graphs Representing graphs Challenge: Store a graph

Breadth-first Search

Breadth-first search and its uses The breadth-first search algorithm Challenge: Implement breadth-first search Analysis of breadth-first search

License

Why did we port Cormen and Balkcom's Algorithms course?License

Non-comparison based sorting algorithms

A Guessing Game

Let's play a little game to give you an idea of how different algorithms for the same problem can have wildly different efficiencies. The computer is going to randomly select an integer from 1 to 16. You have to guess the number by making guesses until you find the number that the computer chose. Let's begin.

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