Data Structures Explained for Beginners - How I Wish I was Taught

Data structures are essential for coding interviews and real-world software development. In this video, I’ll break down the most important data structures, how they work, and their time complexities—with simple, real-world examples to make them easy to understand! ✉️ TECH NEWSLETTER Stay competitive in tech with my newsletter! Discover the latest tech trends shaping the industry, unlock career tips & advance to propel your growth, and access exclusive resources to enhance your skills and knowledge. → https://sajjaad.substack.com/ 🏆 INTERN SUCCESS ACADEMY The COMPLETE Program for landing an internship at a top tech company in which I help you PERFECT your resume, linkedin, behavioral interview, and technical skills → https://sajjaad-s-site.thinkific.com/courses/land-tech-job 🧑‍💻 LEARN TO CODE Learn to code with bite-sized projects and an AI-bot to help answer your queries. I recommend you start with their python module, then check out java and javascript. → https://coddy.tech/ (It's FREE, but you can use the code SAJYT for 20% off of premium features!) 📄 FREE RESUME REVIEW → https://sajjaad-s-site.thinkific.com/courses/land-tech-job 🍿 WATCH NEXT If I Wanted a Software Engineering Internship in 2025, I’d Do This https://youtu.be/yUQbl9J3kJU?si=PLOfpBg1ZGT7zMjU ⬇️ MY OTHER SOCIALS: 📸 Instagram: https://www.instagram.com/sajjaad.khader/ 📱 TikTok: https://www.tiktok.com/@sajjaadkhader 🌍 My website: https://sajjaad-s-site.thinkific.com/courses/land-tech-job 0:00 - Why Data Structures Matter 0:29 - Big O Notation Explained 1:12 - O(1) - The Speed of Light 1:46 - O(n) - Linear Time 2:30 - O(n²) - The Slowest Nightmare 3:13 - O(log n) - The Hidden Shortcut 4:20 - Arrays 5:52 - Linked Lists 7:17 - Stacks 8:28 - Queues 9:30 - Heaps 10:52 - Hashmaps 12:39 - Binary Search Trees 13:41 - Sets 15:19 - Next Steps & FAANG LeetCode Practice