DSA in Python · Zero to interview-ready
Step by step Start from zero

Crack DSA interviews at top MNCs.Even if you are starting from zero.

Learn data structures from scratch. Then solve the most common DSA questions asked at Amazon, Microsoft, Google, TCS and Infosys, one by one, with every line explained.

  • 57 hours: the fundamentals first, then interview practice
  • 80+ interview problems solved step by step
  • 14+ patterns that make new questions feel familiar
View full curriculum
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DSA Masterclass · From basics to interview preparation

Learn DSA and Crack Coding Interviews

₹999₹15,999Save ₹15,000
One-time payment · 12 months access
  • 57 hours of lessons, from zero to interview level
  • 80+ interview problems solved step by step
  • 14+ patterns that crack new questions
  • Learn on mobile or laptop, 12 months
  • CynoHub certificate of completion
  • Code in Python, every line explained

This batch closes in --

Pay with any UPI appGoogle PayPhonePePaytmUPI
Secure checkoutInstant accessWhatsApp support
Course highlights

Everything you need to know, at a glance

Taught in simple English

Every idea explained slowly, with everyday examples.

Learn on your phone

Recorded lessons. Watch, pause and rewatch for 12 months.

No DSA knowledge needed

Starts from zero. Every line explained, even the Python.

80+ interview problems

Easy to hard, solved step by step with you.

57 hours, 2 parts

Fundamentals first, then 14+ interview patterns.

Instant access

Login details on email and WhatsApp right after you pay.

Certificate for your resume

A unique ID you can add to LinkedIn.

Still have questions? Read the FAQs

What our students say

Join 15,000+ students learning with CynoHub

“I used to jump into coding immediately. Now I think about the pattern and time complexity first.”
AAnirudh BollamVNR Vignana Jyothi Institute of Engineering and Technology
“Sliding window finally clicked.”
ZZoya RahmanChaitanya Bharathi Institute of Technology
“Good pace for someone restarting DSA from zero. Big O was explained without making it complicated.”
PPraneeth ChVasavi College of Engineering
“The best part is understanding why a solution works, not just memorising the code.”
DDeepthi YadavGokaraju Rangaraju Institute of Engineering and Technology
“Two pointers used to confuse me. A few worked problems later, I started recognising when to use it.”
AAmaan SiddiquiMuffakham Jah College of Engineering and Technology
“Explaining my approach feels easier now.”
PPranavi LKeshav Memorial Institute of Technology
“Arrays, stacks and queues are explained from the basics. Perfect before starting the harder problem sets.”
RRevanth NaiduVardhaman College of Engineering
“The pattern-wise order stopped me from jumping between random LeetCode questions.”
TTanuja MAnurag University
“I had watched binary search videos before and still got stuck when a problem changed slightly. Practising the pattern with different constraints helped me understand the decision at each step instead of remembering one piece of code.”
HHashim PashaSreenidhi Institute of Science and Technology
“I liked how each Python line is explained. You can focus on the logic instead of struggling with syntax.”
BBhanu SriBVRIT Hyderabad College of Engineering for Women
“Tree DFS and BFS finally feel like two different tools, not two definitions to mug up.”
EEshwar RaoOsmania University College of Engineering
“The easy questions matter too.”
SSaniya NoorG. Narayanamma Institute of Technology and Science
“Hash maps and frequency counting helped me solve questions I had skipped before.”
KKiran TejKakatiya Institute of Technology and Science
“There is a clear route from fundamentals to interview patterns. I needed that structure.”
KKeerthi NMalla Reddy Engineering College
“The worked examples show the thought process, including where a first approach can be improved.”
UUzair AhmedCVR College of Engineering
“Dynamic programming sounded scary. Breaking problems into smaller decisions made it less overwhelming.”
AAparna VAndhra University College of Engineering
“Linked lists finally make sense.”
VVineeth ChowdaryGayatri Vidya Parishad College of Engineering
“The linked list walkthroughs were exactly what I needed. Pointers finally stopped feeling mysterious.”
NNazia FarheenVignan's Institute of Information Technology
“Rather than memorising 80 answers, I am learning to recognise patterns. Much better way to prepare.”
SSubhash KRaghu Engineering College
“I used to open LeetCode, pick a random medium problem and give up. Following the sections in order helped me practise one concept properly before trying the next. It feels much more manageable this way.”
MMrudula PGITAM (Deemed to be University), Visakhapatnam
“The hashing and two-pointer sections helped me get unstuck on several practice problems.”
MManojit SJNTUK University College of Engineering, Kakinada
“I had never studied heaps properly. The visuals and simple explanations made the idea stick.”
AAfsha KhanPragati Engineering College
“For placement prep, the step-by-step Python solutions are more useful than fast explanations with missing steps.”
GGowtham RAditya University
“Pattern first. Code second. Good habit.”
YYamini KSree Vidyanikethan Engineering College
“The 57-hour structure helped me organise my revision around topics instead of random playlists.”
LLokesh BRVR & JC College of Engineering
“Backtracking was always my weak area. The try, undo, try-again explanation was easy to follow.”
SSravya TVignan Foundation for Science, Technology and Research
“The merge intervals questions showed me how much a simple sorting step can change the solution.”
NNaveed AkhtarSRKR Engineering College
“The course made me more comfortable talking through a solution, even when I do not know the optimal approach immediately. I can describe a basic method, check the complexity and then work towards something better.”
RRamya DVasireddy Venkatadri Institute of Technology
“The course goes beyond syntax and teaches how to think through a problem. That is what I was missing.”
SSrinivas SLakireddy Bali Reddy College of Engineering
“I was avoiding graphs for months. After BFS and DFS practice, I can at least start those questions confidently.”
FFarheen SRajeev Gandhi Memorial College of Engineering and Technology
Why now

Your DSA round decides your package. Walk in prepared.

Product companies and top service companies use DSA questions to decide who gets the higher package. This course gets you ready for that moment.

The old way

Preparing alone

  • Random videos with no clear order
  • Memorising answers, then going blank in the interview
  • Skipping every problem that looks hard
  • Watching friends get placed first
With this course

Preparing with a clear path

  • One clear path from basics to interview level
  • 14+ patterns, so new questions feel familiar
  • 80+ real interview problems solved with you
  • The confidence to explain your solution out loud
Made for you

This course is for you if...

You want to clear placement coding rounds

Get ready for the DSA round that decides who moves forward in campus and off-campus drives.

DSA feels scary and you want it simple

Every idea is explained from the very first step, in simple English, with pictures in your head.

You are aiming for top product companies

Practise the kind of questions top MNCs ask, and learn to solve problems you have never seen.

Never written Python? You can still start. The first problems are very simple and every line is explained clearly.

Your 57-hour path

Learn it right. Then crack it.

First, every data structure from zero. Then the questions interviewers love to ask, solved one by one with you.

Part 1 · about 20 hours

Learn the fundamentals

Start from absolute zero. Understand how each data structure and algorithm works, then see it used in 11 real interview questions.

Big OArraysLinked listsStacksQueuesHash tablesTreesHeapsTriesGraphsSearchingSorting
Part 2 · about 37 hours

Crack the 14+ interview patterns

Learn the 14+ patterns behind most interview questions and solve 80+ problems with them, from easy to hard.

HashingTwo pointersSliding windowFast and slow pointersStacksBinary searchTree DFS and BFSBacktrackingTriesHeapsGraphsDynamic programmingGreedyMerge intervals

Problems you will solve

Two SumEasy
Hashing
Valid AnagramEasy
Hashing
Group AnagramsMedium
Hashing
3SumMedium
Two pointers
Container With Most WaterMedium
Two pointers
Longest Substring Without Repeating CharactersMedium
Sliding window
Minimum Window SubstringHard
Sliding window
Linked List CycleEasy
Fast and slow pointers

and 70+ more, each solved step by step with you

The kind of questions asked at
AmazonMicrosoftGoogleTCSInfosys
Pattern decoder

See the clue. Know the pattern.

Interview questions hide clues. This course trains you to spot them, so even new questions feel familiar. Tap a pattern to try it.

The clue in the question

“Find if something appeared before, or count how often it appears.”

The pattern to use

Hashing

A hash map remembers everything you have seen, in one pass.

Practise it on

Two Sum, Valid Anagram, Group Anagrams

6 of the 14+ patterns you master in Part 2

Your placement plan

Interview-ready in 9 weeks

About 1 hour a day is enough. Follow this simple plan, or go faster or slower. You have 12 months of access.

Week 1Part 1

Big O, memory, arrays and linked lists

Week 2Part 1

Stacks, queues, hash tables, trees, heaps and tries

Week 3Part 1

Graphs, searching, sorting, traversal and 11 worked questions

Week 4Part 2

Hashing and two pointers

Week 5Part 2

Sliding window, fast and slow pointers, stacks

Week 6Part 2

Binary search, tree DFS and BFS

Week 7Part 2

Backtracking, tries and heaps

Week 8Part 2

Graph problems

Week 9Part 2

Dynamic programming, greedy and intervals

Week 9 done: you walk into coding rounds prepared

Your transformation

What changes for you after this course

The skills that turn a coding round from scary into your strongest moment.

Solve problems you used to skip

Medium and hard questions start to feel doable, one pattern at a time.

Spot the pattern in seconds

Read a new question and know which of the 14+ patterns to use.

Explain your code like a pro

Talk through time and space complexity with confidence.

Write clean Python solutions

Clear, short code that interviewers enjoy reading.

Walk into coding rounds prepared

Stop guessing. Know exactly how to approach each question.

Earn a certificate for your resume

Add your CynoHub certificate to LinkedIn and your resume.

Your journey

From zero to interview-ready

A clear path. You always know what to do next.

1
Start from zeroBig O and memory, explained simply.
2
Master data structuresArrays all the way to graphs.
3
Learn the key algorithmsSearching, sorting and traversal.
4
Crack 14+ patterns80+ interview problems, solved with you.
5
Walk in interview-readyAnd earn your certificate.

Everything you will learn. Tap a module to open it.

Part 1Learn the fundamentals
  • Course introduction and how to use the code
  • Time complexity and space complexity
  • Growth rates, from slow to fast
  • How memory works
  • Logarithms made simple
  • What a data structure is
  • Static and dynamic arrays
  • Singly linked lists
  • Doubly linked lists
  • Circular linked lists
  • Stacks: last in, first out
  • Queues: first in, first out
  • Push, pop, enqueue and dequeue
  • Where stacks and queues are used
  • Hash functions
  • Handling collisions
  • Binary trees
  • AVL trees
  • Red-black trees
  • Heaps and priority queues
  • Heap sort
  • Tries for fast word search
  • How to represent a graph
  • Linear search
  • Binary search
  • Bubble, selection and insertion sort
  • Quick sort
  • Merge sort
  • Tree traversal with DFS
  • Tree traversal with BFS
  • Graph traversal with DFS
  • Graph traversal with BFS
  • Two Sum
  • Min Stack
  • Max Stack
  • Design a linked list
  • Reverse a linked list
  • Construct a binary tree
  • Invert a binary tree
  • Construct a binary search tree
  • Detect capital
  • Reverse a string
  • Longest palindromic substring
Part 2Crack the interview patterns
  • Hash maps and sets for quick lookup
  • Counting how often things appear
  • Two pointers moving towards each other
  • Sliding window of fixed and changing size
  • Fast and slow pointers on linked lists
  • Monotonic stack
  • Matching brackets with a stack
  • Tree DFS problems
  • Tree BFS problems
  • Backtracking: try, undo, try again
  • Trie problems
  • Heap and priority queue problems
  • Graph DFS and BFS
  • Union-find
  • Cycle detection
  • Topological sort
  • Dynamic programming with memoization
  • Dynamic programming with tabulation
  • Greedy algorithms
  • Merge intervals
Crack DSA interviews with ease

Your DSA preparation starts here

Every data structure, every pattern and 80+ problems, explained step by step in simple English.

57 hours, basics to interviews
80+ interview problems
CynoHub certificate
This batch closes in
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New batches open every 3 days
₹999₹15,999Save ₹15,000
One-time payment · 12 months access
  • 57 hours of lessons from zero to interview level
  • 80+ interview problems solved step by step
  • Learn on mobile or laptop
  • Certificate of completion

Login details on email and WhatsApp right after you pay

Pay with any UPI appGoogle PayPhonePePaytmUPI
Easy to start

Start in 3 simple steps

1

Grab your laptop

Any laptop or PC works. Python is free, and the setup is shown on screen.

2

Start with Part 1

Learn Big O and arrays from the very first step. Already know the basics? Jump to Part 2.

3

Practise the patterns

Solve interview problems one pattern at a time, at your own pace.

What you will practise with
PythonVS CodeLeetCode problems
Get certified

A certificate you'll be proud to share

CynoHub CERTIFICATE OF COMPLETION This is proudly presented to Your Name for successfully completing the course DSA Masterclass: Crack Coding Interviews CYNO Program Director, CynoHub CYNO-DSA-2026-0001 Certificate ID
  • Your name and the course on a CynoHub certificate
  • Add it to LinkedIn and your resume in one click
  • A unique certificate ID with your completion date
Questions

Frequently asked questions

Yes. The first problems are very simple and the instructor explains every single line, so you pick up Python as you go.
Yes. Part 1 starts from absolute zero with Big O and arrays, and builds up one step at a time.
The course solves the most common DSA questions asked by companies like Amazon, Microsoft, Google, TCS and Infosys, using 14+ patterns that cover the Blind 75 and more.
80+ interview problems in Part 2, from easy to hard, plus 11 worked interview questions in Part 1.
New to DSA? Begin at Part 1. Already know the basics? Jump straight to Part 2 and start the patterns.
Recorded, so you learn at your own pace. Pause, rewatch and come back anytime for 12 months.
Right away. Your login details are sent to your email and WhatsApp as soon as you pay.
Yes. Finish the course and get a CynoHub certificate of completion with your name and a unique ID. Add it to LinkedIn and your resume.
Don't wait

Your placement prep starts today

Every day you practise brings you one step closer to clearing the coding round.

This batch closes in
--Days
--Hrs
--Min
--Sec
New batches open every 3 days
  • 57 hours of lessons: fundamentals plus interview patterns
  • 80+ interview problems solved step by step
  • 14+ patterns that crack new questions
  • 12 months access on mobile and laptop
  • CynoHub certificate of completion
  • WhatsApp support, Monday to Saturday
  • Everything included₹15,999₹999
Pay with any UPI appGoogle PayPhonePePaytmUPI
Secure checkoutInstant accessWhatsApp support