Bubble Sort
Trace comparisons, swaps and passes step by step.
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Featured DSA lessons
Python Logic, Conditions, Loops and Functions
Build the foundation needed before DSA.
Open lesson →Java Loops
Practice for, while and nested loops for DSA thinking.
Open lesson →Recursion Visualizer
See function calls and return flow visually.
Open visualizer →Searching Visualizer
Understand search logic through interactive steps.
Open visualizer →Sorting Detector
Recognize sorting patterns and algorithm behavior.
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Searchable lesson directory
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Find DSA, Python, Java, sorting and visualizer lessons
The full old directory can remain on a separate sitemap page. This homepage shows useful public lessons and guides beginners first.
20 lessons shown
Begin DSA
Beginner-friendly programming foundation and first DSA steps.
Python Start
Start Python programming before moving into DSA.
Python Logic, Conditions, Loops and Functions
Core logic building for DSA practice.
Python Sorting
Start sorting algorithm practice in Python.
Bubble Sort
Learn comparisons, swaps and repeated passes.
Selection Sort
Find minimum and build a sorted section.
Insertion Sort
Insert each element into the correct place.
Merge Sort
Divide, sort and merge using recursion.
Quick Sort
Understand pivot, partition and recursive sorting.
Java Arithmetic
Arithmetic operators and Math class basics.
Java Boolean and Logical Operators
Build decision-making logic in Java.
Java Loops
Practice loops for patterns and DSA problems.
Java Scanner
Read user input and solve interactive problems.
Python OOPs
Understand classes, objects and structure.
Python NumPy Arrays
Practice array thinking and data handling.
Recursion Visualizer
See function calls and returns clearly.
Searching Visualizer
Understand searching through visual steps.
Shortest Path Visualizer
Explore graph path concepts visually.
Minimum Spanning Tree
Understand graph connections and spanning trees.
WebSocket Chat
Learn real-time programming with a chat project.
Beginner questions
Frequently Asked Questions
Can I start DSA without knowing advanced programming?
Yes. Start with Python basics, loops, lists and simple tracing before arrays, recursion and sorting.
Which DSA path is easiest?
Python DSA Beginner is the easiest path because the syntax is simple and the focus stays on logic.
Should I learn Java DSA?
Choose Java DSA if your school, college or exam uses Java, or if you want stronger OOP practice.
Why start with sorting?
Sorting teaches comparison, swapping, loops, tracing, recursion and algorithm analysis in a practical way.
How do I prepare for interviews?
Practice patterns daily, explain your solution, write clean code, and keep a GitHub record of solved problems.
Can I learn offline in Varanasi?
Choose Offline in Varanasi or Hybrid in the form and send your WhatsApp message for guidance.