Most students just copy Quick Sort…
PROs understand the Partition Logic.
In this DSA Tutorial, I explained Quick Sort in Java from scratch step by step, with complete code, diagrams, and dry runs.
From understanding why Quick Sort is fast, to pivot selection, partition logic, and recursion, everything is explained in a simple, visual way so you truly understand the algorithm, not just memorize it.
In this video, you will learn:
What Quick Sort is and how it works internally
Why Quick Sort is O(n log n) on average and beats Merge Sort in space
How pivot selection works
Partition logic with i and j pointers visualized
Full Java code with line-by-line explanation
Dry run with diagrams for complete clarity
Recursion explained step by step
Best, Average, and Worst Case Time Complexity
When to use Quick Sort and when to avoid it
Perfect for:
* DSA beginners
* Java students
* Coding interview preparation
* University CS / SE exams
* Anyone who wants to master sorting algorithms with a logic-first approach
Subscribe to The Techzeen for logic-first DSA tutorials explained in Hindi/Urdu with real understanding.
Source Code:
https://github.com/farzeen-ali/DSA-Concepts-The-Techzeen-2025
DSA Lectures:
https://github.com/farzeen-ali/DSA-Lectures-2025-The-Techzeen
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