Computer Science Courses and Certifications

CodeHelp - by Babbar

Linked List and its Types - Singly, Doubly, Circular with Implementation and Problems

Practice linked-list interview problems, from reversing and loop detection to merging lists and cloning random-pointer lists.

• YouTube
• 8 hours 23 minutes
• Self-Paced
• Free Video

CodeHelp - by Babbar

Recursion Series - 10 Day Recursion Challenge

Build recursion from first principles through binary search, recursive sorting, and string and maze problems.

• YouTube
• 6 hours 32 minutes
• Self-Paced
• Free Video

Kunal Kushwaha

Complete Tree Data Structure Course for Interviews

Build from binary tree traversals to balanced search trees and segment trees through code and interview problems.

• YouTube
• 12 hours 56 minutes
• Self-Paced
• Free Video

Kunal Kushwaha

Recursion and Backtracking Course

Build recursive solutions from first principles, then apply them to sorting, permutations, maze problems, and classic backtracking puzzles.

• YouTube
• 11 hours 50 minutes
• Self-Paced
• Free Video

Great Learning

Data Structures and Algorithms

Learn core data structures through examples in C, Java, and Python, including stacks, linked lists, and trees.

• YouTube
• 1 day 15 hours 49 minutes
• Self-Paced
• Free Video

Neso Academy

Data Structures - Complete Course with Algorithms and Implementation

Builds from pointer and memory-management basics into hands-on implementations of linked lists, stacks, queues, and trees.

• YouTube
• 18 hours 55 minutes
• Self-Paced
• Free Video

Neso Academy

Operating Systems - Complete Course

Trace how an operating system coordinates processes, memory, and storage to let programs run efficiently.

• YouTube
• 16 hours 53 minutes
• Self-Paced
• Free Video

Simple Snippets

Data Structures and Algorithms in C++ - Full Course - 2025 Edition - Beginner to Advanced

Learn how core data structures and algorithms work, then implement them in C++ through diagrams, pseudocode, and code walkthroughs.

• YouTube
• 2 days 7 hours 52 minutes
• Self-Paced
• Free Video

Telusko

Data Structures and Algorithms

Implements linked lists, stacks, and queues in Java while introducing search, sorting, and the complexity of common algorithms.

• YouTube
• 5 hours 14 minutes
• Self-Paced
• Free Video

Telusko

Data Structures using Java

Learn how linked lists, stacks, queues, and trees work by implementing them in Java.

• YouTube
• 2 hours 43 minutes
• Self-Paced
• Free Video

Coding Train

Additional Topics in p5.js - JavaScript Functions, Transformations, and Advanced Concepts - Part 9

Explore practical p5.js and JavaScript techniques, including sketch transformations, animation, closures, prototypes, and hosting.

• YouTube
• 5 hours 29 minutes
• Self-Paced
• Free Video

Coding Train

Algorithms and Graphs - Intelligence and Learning - Session 1

Explore graph algorithms through coding challenges on maze generation, A* pathfinding, breadth-first search, and the traveling salesperson problem.

• YouTube
• 4 hours 55 minutes
• Self-Paced
• Free Video

Back To Back SWE

Time and Space Complexity

Builds intuition for how Big O, Big Omega, and Theta describe algorithm growth, including the role logarithms play in time complexity.

• YouTube
• 1 hour 4 minutes
• Self-Paced
• Free Video

Back To Back SWE

Arrays, Primitives, and Strings - Programming Interview Preparation

Trace interview problems from straightforward solutions to efficient techniques, including Kadane’s maximum-subarray algorithm and KMP string matching.

• YouTube
• 4 hours 28 minutes
• Self-Paced
• Free Video

Back To Back SWE

Dynamic Programming, Recursion, and Backtracking

Breaks algorithmic problems into subproblems and applies dynamic programming, recursion, and backtracking strategies to classic challenges.

• YouTube
• 6 hours 32 minutes
• Self-Paced
• Free Video