ViewTube

Teaching computer science the way it should be taught — with clarity, depth, and real understanding.

I'm Mohammed Youssef, a Lecturer & Research Assistant at the German University in Cairo (GUC) with an MSc in Computer Science & Engineering. I teach Data Structures & Algorithms, Object-Oriented Programming, and Intro to CS to over 1,000 students every semester — and this channel is the extension of that classroom.

Here you'll find in-depth breakdowns of DSA concepts, LeetCode problem walkthroughs, OOP design principles, software engineering fundamentals, AI topics, and more. Whether you're a student, a developer leveling up, or someone preparing for technical interviews — this channel is built for you.

📌 Topics covered: DSA · Leetcode · OOP · Software Engineering · AI & more
🎓 MSc in Computer Science & Engineering | Lecturer Assistant @ GUC
🔗 linkedin.com/in/mohamed-youssef-9453741a9/

Videos

9:25

Squares of a Sorted Array (LeetCode 977) | Two Pointers in O(n)

24 views

4d ago

30:10

Sort Colors (LeetCode 75) | From Two Passes to One (Dutch National Flag)

21 views

4d ago

7:00

Set Mismatch (LeetCode 645) | Cyclic Sort in O(n) Time & O(1) Space

7 views

4d ago

10:28

Find the Duplicate Number (LeetCode 287) | Cyclic Sort in O(n)

3 views

4d ago

20:01

Missing Number (LeetCode 268) | 3 Solutions: Cyclic Sort, Sum & XOR

25 views

4d ago

12:54

Cyclic Sort Explained | Sort in O(n) Time & O(1) Space

32 views

4d ago

28:50

BS-10. Capacity to Ship Packages Within D Days | Binary Search on Answers

65 views

11d ago

30:26

BS-9. Koko Eating Bananas | Binary Search on Answers

105 views

11d ago

23:09

BS-8. Sqrt(x) | Binary Search on Answer

37 views

11d ago

18:55

BS-7. Single Element in a Sorted Array | O(n) → Binary Search on Index

71 views

11d ago

7:47

BS-6. Find Peak Index in Mountain Array II | Binary Search on a Partially Sorted Array

105 views

11d ago

12:52

BS-5. Peak Index in a Mountain Array | Binary Search on a Partially Sorted Array

49 views

11d ago

12:22

BS-4. Search in Rotated Sorted Array II | Binary Search on a Partially Sorted Array

33 views

11d ago

17:45

BS-3. Search in Rotated Sorted Array I | Binary Search on a Partially Sorted Array

67 views

11d ago

14:39

BS-2. Floor and Ceil in a Sorted Array | Brute Force → Binary Search

67 views

11d ago

25:26

Bubble Sort Explained — Idea, Code, Complexity & Stability

252 views

2w ago

38:13

Selection Sort Explained — Idea, Code, Complexity, Stability

204 views

2w ago

20:37

BS-1. Binary Search Explained — Idea, Code, Complexity & the Overflow Bug You Never Noticed

220 views

2w ago

21:06

Time Complexity Explained | Basics + Solved Problems

214 views

2w ago