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Free DSA Online Course with Certification | Learn in 21 Days

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★ 4.7/5
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Free Data Structures & Algorithms Course Overview

Ready to improve your coding skills? Our Free Data Structures & Algorithms Certification Course is useful for anyone wanting to learn the fundamentals of DSA. Whether you're a beginner or looking to improve your skills, we'll take you through fundamental concepts like arrays, linked lists, stacks, queues, and more complex topics like trees and graphs.

You'll also learn about important sorting, searching, and dynamic programming methods, as well as how to use Big-O Notation to optimize your code. By the end, you'll be confident in tackling problems efficiently and prepared for coding interviews or competitions.

In addition, you will receive a Certification to show your DSA skills & stand out in the tech industry. Ready to start? This course is aimed at advancing your coding skills!

    Why Learn Data Structures & Algorithms?

    1. Improve Problem Solving: Create logical and efficient solutions to challenging problems.
    2. Expert Interviews: Essential for passing technical interviews at top organizations.
    3. Simplify Code: Develop applications that are faster, more efficient, and scalable.
    4. Boost Competitive Programming: Gain an advantage in coding competitions and hackathons.
    5. Advance Your Career: DSA expertise is a highly appreciated ability in technical professions.
    6. Build Foundations: Get ready for complex topics like AI, Machine Learning, and Big Data.

    Top Career Options After Learning DSA

    1. Software Developer: Build efficient and scalable software.
    2. Data Analyst: Analyze and process large datasets.
    3. Backend Developer: Create robust server-side applications.
    4. AI/ML Engineer: Develop intelligent models and systems.
    5. Systems Architect: Design scalable and efficient systems.
    6. Database Engineer: Optimize and manage complex databases.

    Tools for Learning Data Structures & Algorithms

    1. Code Editors: Visual Studio Code, and Sublime Text for writing and testing code.
    2. Online Platforms: Scholarhat, LeetCode, HackerRank, and Codeforces for practice.
    3. IDEs: Eclipse, PyCharm, IntelliJ IDEA for language-specific development.
    4. Visualization Tools: VisuAlgo for visualizing data structures and algorithms.
    5. Version Control: Git and GitHub for code management.
    6. Debugging Tools: Built-in debuggers or GDB for code testing.

    Features

    Course Features: Free Data Structures & Algorithms Certification Course

    1. Comprehensive Curriculum: This includes fundamental and advanced data structures and techniques, such as arrays, linked lists, stacks, queues, trees, graphs, sorting, searching, and dynamic programming.
    2. Big-O Analysis: Learn how to analyze algorithms' time and space complexity, allowing you to optimize your solutions for efficiency.
    3. Interactive Learning: Participate in video tutorials, & coding challenges meant to improve your learning and keep you motivated.
    4. Real-World Applications: Use your knowledge to address practical challenges that commonly arise in technical interviews & competitive programming.
    5. Free Certification: Receive a certificate upon successful completion to showcase your skills and enhance your resume.
    6. Self-paced Learning: Study quickly with lifetime access to course materials, allowing you to learn whenever and wherever you want.

    Eligibility Criteria for Learning Data Structures & Algorithms

    There are no strict eligibility requirements for the Free Data Structures & Algorithms Certification Course. Basic programming knowledge in languages like Python, Java, or C++ is helpful, but not mandatory. The course is suitable for all levels—whether you're a beginner or have some coding experience. All you need is a willingness to learn and a passion for improving your problem-solving skills in algorithms and data structures.
    This course includes
    100 % OFF
    ₹ 1,534 Free

    Included in this Course

    DSA and Big O
    Data Structure Introduction
    Preview 04m 32s
    Non-Linear Data Structure
    09m 25s
    Asymptotic analysis
    14m 31s
    Asymptotic Explanation
    20m 23s

    Array
    Array Introduction
    09m 58s
    Array Traversal
    10m 46s
    Array insert data
    06m 21s
    Array Bound Checking
    16m 52s
    Array Insertion
    12m 35s
    Deletion in Array
    07m 38s
    2D array
    13m 47s
    Array List Integer
    20m 47s
    Array Questions
    Array List String
    18m 17s
    Storing Heterogeneous Element in array
    13m 20s
    Array Question1
    41m 40s
    Array Question2
    18m 48s
    Sum Leet code
    19m 24s
    buy and sell Stock leetcode
    10m 34s
    Product of Array Except Self
    16m 56s
    Container With Most Water
    19m 45s
    Spiral Matrix
    30m 10s
    Sudoku valid
    29m 36s

    String
    String
    Preview 01m 00s
    String literals
    09m 15s
    Immutable String
    05m 33s
    String Methods
    21m 33s
    StringBuilder vs String Buffer
    04m 42s
    String Builder and Buffer example
    11m 29s
    Valid Palindrome
    08m 05s
    Valid Anagram
    15m 23s
    Longest Substring Without Repeating Characters
    17m 22s
    Find All Anagrams in a String
    31m 07s
    Largest Number
    19m 26s
    Largest Number 1
    09m 06s

    Linear Search
    Linear search1
    Preview 01m 42s
    Linear Search Implementation
    08m 04s
    Linear Search Questions
    25m 56s
    Binary Search
    Binary Search
    01m 34s
    Binary Search implementation
    12m 19s
    First and Last Occurence
    23m 33s
    Arrays Searching
    Search in Rotated Sorted array
    19m 31s
    Search in rotated Sorted Array
    10m 39s
    Find Minimum in Rotated Sorted Array
    04m 59s

    Bubble, Selection and Insertion Sort
    Bubble Sort
    01m 28s
    Bubble Sort Implementation
    07m 33s
    Selection Sort
    02m 05s
    Selection Sort Implementation
    07m 15s
    Insertion Sort
    01m 06s
    Insertion Sort implementation
    10m 18s
    Merge, Quick and Counting Sort
    Merge Sort
    09m 58s
    Merge Sort Implementation
    20m 22s
    Quick Sort
    08m 51s
    Quick Sort Implementation
    08m 51s
    Counting Sort
    02m 46s
    Counting Sort Implementation
    17m 57s
    Bucket, Find Kth Element and Find Pages
    Bucket Sot
    01m 03s
    Bucket Sort Implementation
    15m 47s
    FindKthElement
    19m 26s
    Kth largest element
    22m 27s
    Find Pages
    09m 33s
    Find Pages PART 2
    20m 01s
    Theif problem
    13m 19s
    Minimum swaps
    15m 06s

    Stack
    Stack
    03m 38s
    Stack Implementation by library
    14m 58s
    Stack Implementation using Array
    23m 16s
    Stack Implementation using LinkedList
    22m 09s
    Valid Parentheses
    16m 36s
    Simplify Path 1
    12m 27s
    Simplify path 2
    09m 27s
    Evaluate Reverse Polish Notation
    25m 12s
    Trapping Rainwater
    24m 04s
    Longest valid Parentheses
    24m 13s
    Basic Calculator
    26m 05s
    Queue
    Introduction to Queue
    Preview 04m 49s
    Queue Implementation
    13m 16s
    Queue Implementation user defined function
    28m 12s
    Implement Stack using Queues
    25m 32s
    Implement Queue using Stack
    21m 23s
    First Unique Character in a String
    26m 01s
    First Unique Character in a String
    26m 01s
    Reveal Cards in Increasing Order
    19m 32s
    Find the Winner of the Circular Game
    17m 23s
    1. Data Structures & Algorithms
    00:05:00
    2. Big O in Data Structure
    00:06:00
    3. Array in Data Structures
    00:07:00
    4. String in Data Structure
    00:02:00
    5. Linear Search in Data Structure
    00:02:00
    6. Binary Search in Data Structure
    00:02:00
    7. Bubble Sort in Data Structure
    00:03:00
    8. Selection Sort in Data Structure
    00:02:00
    9. Insertion Sort in Data Structure
    00:03:00
    10. Merge Sort in Data Structure
    00:03:00
    11. Quick Sort in Data Structure
    00:02:00
    12. Counting Sort in Data Structure
    00:03:00
    13. Bucket Sort in Data Structure
    00:03:00
    14. Heap Sort in Data Structure
    00:04:00
    15. Shell Sort in Data Structure
    00:03:00
    16. Radix Sort in Data Structure
    00:02:00
    17. Stack in Data Structure
    00:04:00
    18. Queue in Data Structure
    00:04:00
    1. Java: Count the frequency of an element in an Array
    00:20:00
    2. Java: Ceiling in a Sorted Array
    00:25:00
    3. Java: Two Sum
    00:30:00
    4. Java: Reverse a Stack using Recursion
    00:25:00
    5. Java: Find next right node of a given key
    00:30:00
    6. Java: Big-O-Binary Search Algorithm
    00:15:00
    7. Java: Traversing directory in Java using BFS
    00:20:00
    8. Java: Delete consecutive same words in a sequence
    00:25:00
    9. Java: Merge Sorted Arrays
    00:25:00
    10. Java: Count 1’s in a Sorted Binary Array
    00:20:00
    11. Java: Find all triplets with zero sum
    00:20:00
    12. Java: Leaders in an array
    00:20:00
    13. Java: Find a Fixed Point (Value equal to Index) in given Array
    00:25:00
    14. Java: Search Insert Position
    00:25:00
    15. Java: Sort a Stack using another stack
    00:30:00
    16. Java: Minimum time required to rot all oranges
    00:40:00
    17. Java: Next Greater Element
    00:30:00
    18. Java: First Bad Version
    00:30:00
    19. Java: Search an Element in a Sorted and Rotated Array
    00:30:00
    20. Java: Meeting Rooms
    00:25:00
    21. Java: Merge Two Sorted Arrays
    00:20:00
    22. Java: Two Elements whose Sum is Closest to Zero
    00:30:00
    23. Java: Find Peak Element
    00:30:00
    24. Java: Trapping rain water
    00:30:00
    25. Java: Largest rectangle in histogram
    00:25:00
    26. Java: Search in Rotated Sorted Array
    00:25:00
    27. Java: Search in an Almost Sorted Array
    00:25:00
    28. Java: Minimum Number of Jumps to Reach End in Array
    00:25:00
    29. Java: Move all Zeros to the beginning of an array
    00:25:00
    30. Java: Median of Two Sorted Arrays of Different Sizes
    00:30:00
    31. Java: 3 Sum
    00:25:00
    32. Java: Search a 2D Matrix
    00:20:00
    33. Java: A Pair with a Given Sum in the Rotated Sorted Array
    00:25:00
    34. Java: Remove Duplicates from an Array
    00:20:00
    35. Java: Rotate a Matrix by 90 degrees
    00:25:00
    36. Java: Sort Elements by Frequency
    00:30:00
    37. Java: Find Minimum in Rotated Sorted Array
    00:25:00
    38. Java: Find Minimum in Rotated Sorted Array II
    00:35:00
    39. Java: Sort a Linked List of 0s, 1s and 2s
    00:35:00
    40. Java: Rotate an Array to the left
    00:20:00
    41. Java: Camel Case of a given Sentence
    00:20:00
    42. Java: Find Missing Elements of a Range
    00:25:00
    43. Java: Sort a Nearly Sorted (or K sorted) Array
    00:20:00
    44. Java: Count ways to increase LCS length of two Strings by one
    00:25:00
    45. Java: Minimum rotations required to get the same string
    00:15:00
    46. Java: Chocolate Distribution Problem
    00:30:00
    47. Java: Minimum Swaps required to convert binary tree to binary search tree
    00:30:00
    48. Java: Multiply Large Numbers represented as Strings
    00:25:00
    49. Java: Find Itinerary from a given list of tickets
    00:25:00
    50. Java: Count Distinct Occurrences as a Subsequence
    00:30:00
    51. Java: Sort a Matrix in all way Increasing Order
    00:20:00
    52. Java: Find the length of the largest subarray with 0 Sum
    00:25:00
    53. Java: Longest Increasing Consecutive Subsequence
    00:25:00
    54. Java: Find Whether an Array is a Subset of Another Array
    00:20:00
    This course includes
    100 % OFF
    ₹ 1,534 Free

    Certification FAQs

    1. Are there any hidden charges for the certification?
      No, the course and certification are completely free. There are no hidden charges.
    2. How can I get the free certification?
      To get the free certification, you need to enroll in the course, complete all the required modules, and pass the final assessment or quiz
    3. Can I earn multiple free certifications?
      Yes, you can enroll in multiple courses and earn free certifications for each course you successfully complete.
    4. Will the certification mention that the course was free?
      No, the certification will only highlight your achievement and not mention whether the course was free or paid.

    Our Students Review

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    I am quite impressed with simplicity and technical expertise of Shailendra Sir. His technical expertise in the area was reflected in all areas of the course and everything was done very professionally. The course material was extremely well organized and Shailendra Sir explained it very clearly. Another point of this course is small batch and long term support for the development needs.

    Rohit Kumar

    Rohit Kumar

    Technical Lead

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    (4.50)

    I thought it was an enjoyable course, with a great tutor. Lots of information which will benefit my job role. Thank you !!

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    Harendra Thind

    Software Engineer

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    My experience with the Scholarhat has been phenomenal. The center has set a bar of expectation that I am not sure other centers would ever be able to meet! I learned so much, had fun, made friends and truly enjoyed time at the Scholarhat. I suggest you to update your project implementation skills.

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    Mahesh Verma

    Software Engineer

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    There is no doubt about quality of Dot Net Tricks real time project base training. There project implementation is impressive that help me lot to develop my company project easily by this training, I have got confidence about where to implement what. If you have been facing problem in development you should try Scholarhat.

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    I have been working on ASP.NET for 2 years i was getting confusion while working on project. Due to that my performance was not up to mark, I was looking for some real time project based training, after lots of research I come to know about Scholarhat I have got training from there on real time project that overcome my technical confusion and it boost my package. You should also at list try ones.

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    Frequently Asked Questions

    Q1. What is the Free DSA Online Course offered by ScholarHat?
    Our comprehensive course covers fundamental and advanced data structures and algorithms (DSA), including arrays, linked lists, stacks, queues, trees, graphs, and dynamic programming. Designed for beginners, it provides a solid foundation in DSA principles.
    Q2. Will I receive a certificate upon completion?
    Absolutely! Upon completing all modules and passing the final assessment, you'll receive a certificate of completion from ScholarHat to showcase your skills.
    Q3. How long will it take to complete the course?
    The course is structured to be completed in 21 days, with approximately 1–2 hours of study per day. However, it's self-paced, allowing you to learn at your own convenience.
    Q4. What programming languages are used in the course?
    The course primarily uses C and C++ for demonstrating DSA concepts. However, the principles taught are applicable across various programming languages.
    Q5. How will this course benefit my career?
    Mastering DSA is crucial for technical interviews and problem-solving in software development roles. This course equips you with the necessary skills to excel in coding interviews and enhance your programming proficiency.
    Q1. Are these coding courses really 100% free?
    Yes! All our listed courses are completely free. You can access all learning materials, videos, and resources without paying a single rupee.
    Q2. Who can join these free programming courses?
    Anyone! Whether you're a beginner with no coding experience or someone looking to upskill, our courses are designed for all levels.
    Q3. Are these courses beginner-friendly?
    Absolutely. Every course includes step-by-step guidance, real-life examples, and practice projects to help you learn effectively from scratch.
    Q4. Are the free courses self-paced?
    Yes, all our courses are fully self-paced. You can learn anytime, anywhere, and from any device that suits you.
    Q5. Will these courses help me get a job?
    Our focus is on job-ready skills. The courses are built to teach industry-relevant knowledge that employers value, including hands-on coding and real-world projects.
    Q6. Can I get career advice or help with interviews?
    Yes! Along with courses, we offer career resources like interview prep eBooks, resume tips, and mock interview support.
    Q7. Will learning from free courses be enough to get a developer job?
    While free courses provide strong fundamentals, combining them with real-world projects, internships, and advanced practice can significantly boost your chances of landing a job.
    Still have some questions? Let's discuss.
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