Ultimate Data Structures & Algorithms Course – Ace Your Tech Interviews in 49 Hours πŸš€

Unlock your coding potential with this comprehensive 49-hour course covering all major data structures and algorithms. Prepare effectively for technical interviews and land your dream software engineering job!

Ultimate Data Structures & Algorithms Course – Ace Your Tech Interviews in 49 Hours πŸš€
freeCodeCamp.org
261.5K views β€’ Oct 21, 2025
Ultimate Data Structures & Algorithms Course – Ace Your Tech Interviews in 49 Hours πŸš€

About this video

Learn about every popular data structure and algorithm. This 49-hour mega course will help you master technical interviews for software engineering roles! This tutorial will equip you with the essential knowledge, starting with the core concepts of data structure, algorithm, and fundamental analysis like time and space complexity. This course uses Java.

Course developed by: https://www.youtube.com/@DestinationFAANG

⭐️ Resources ⭐️
πŸ”— Most asked Technical Interview Questions: https://docs.google.com/spreadsheets/d/1hzP8j7matoUiJ15N-RhsL5Dmig8_E3aP/edit#gid=1377915986
πŸ”— Github Repo with all the Solutions: https://github.com/DestinationFAANG/Destination-FAANG-Java-Solution

❀️ Support for this channel comes from our friends at Scrimba – the coding platform that's reinvented interactive learning: https://scrimba.com/freecodecamp

⭐️ Chapters ⭐️
- 0:00:00 Introduction
- 0:03:14 Technical interviews 101
- 0:07:02 How to judge an algorithm
- 0:08:02 What is time complexity
- 0:18:42 What is Big O
- 0:20:20 Big O for code blocks
- 0:33:08 Space complexity example
- 0:35:04 How do you get good at solving DSA problems
- 0:37:34 Types of data structures
- 0:48:48 Quick recap
- 0:50:21 Arrays Full Course
- 3:29:02 Sliding Window Full Course
- 5:09:48 Two Pointers Full Course
- 7:00:25 Strings Full Course
- 8:29:27 Sorting & Searching Full Course
- 11:28:48 Linked List Full Course
- 14:08:48 Stack Full Course
- 16:43:55 Queue Full Course
- 17:58:08 Priority Queue Full Course
- 20:55:54 Trees Full Course
- 25:20:01 Graph Full Course
- 32:14:13 Dynamic Programming Full Course
- 37:13:04 Greedy Full Course
- 39:06:36 Interval Full Course
- 40:32:39 Backtracking Full Course
- 42:45:51 Math & Geometry Full Course
- 43:42:30 Matrix Full Course
- 45:55:06 Design Full Course
- 47:22:33 Bit Manipulation Full Course
- 48:48:17 Final message

πŸŽ‰ Thanks to our Champion and Sponsor supporters:
πŸ‘Ύ Drake Milly
πŸ‘Ύ Ulises Moralez
πŸ‘Ύ Goddard Tan
πŸ‘Ύ David MG
πŸ‘Ύ Matthew Springman
πŸ‘Ύ Claudio
πŸ‘Ύ Oscar R.
πŸ‘Ύ jedi-or-sith
πŸ‘Ύ Nattira Maneerat
πŸ‘Ύ Justin Hual

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Learn to code for free and get a developer job: https://www.freecodecamp.org

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Views

261.5K

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Published

Oct 21, 2025

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