CS50x 2026 - Lecture 3 - Algorithms

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*** This is CS50, Harvard University's introduction to the intellectual enterprises of computer science and the art of programming. *** TABLE OF CONTENTS 00:00:00 - Introduction 00:00:43 – Overview 00:11:55 – Searching 00:14:27 – Linear Search 00:17:40 – Binary Search 00:27:01 – Running Time 00:38:54 – search.c 00:50:12 – phonebook.c 00:56:09 – Structs 01:02:13 – Sorting 01:12:20 – Selection Sort 01:20:12 – Bubble Sort 01:29:11 – Recursion 01:36:02 – iteration.c 01:39:44 – recursion.c 01:45:46 – Merge Sort 01:57:23 – Sort Race *** HOW TO SUBSCRIBE HOW TO TAKE CS50 edX: Harvard Extension School: Harvard Summer School: OpenCourseWare: HOW TO JOIN CS50 COMMUNITIES Bluesky: Discord: Ed: Facebook Group: Faceboook Page: GitHub: Gitter: Instagram: LinkedIn Group: LinkedIn Page: Medium: Quora: Reddit: Slack: Snapchat: SoundCloud: Stack Exchange: Telegram: Threads: TikTok: Twitter: Twitter Community: YouTube: HOW TO FOLLOW DAVID J. MALAN Facebook: GitHub: Instagram: LinkedIn: Quora: Threads: TikTok: Twitter: *** CS50 SHOP *** LICENSE CC BY-NC-SA 4.0 Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International Public License David J. Malan [email protected]