Industry Readiness Integrated Series (IRIS) – Proficiency Level 1
Why Learn with Litcoder?
10 modules
English
Certificate of completion
Lifetime access
Build rock-solid foundations in core computer science fundamentals with IRIS Level 1—designed to make you industry-ready, placement-focused, and confident in solving real-world coding problems.
Overview
Launch your tech career with confidence! Industry Readiness Integrated Series (IRIS) - Proficiency Level 1 is your definitive first step towards acing coding interviews and becoming industry-ready. This meticulously structured course breaks down the core computer science fundamentals that form the bedrock of software engineering roles at MNC companies.
Struggling to translate theory into code? We bridge that gap. Move beyond passive learning to actively solving problems patterned on real technical interviews. This course demystifies core concepts—from Arrays and Strings to Recursion and Greedy Algorithms—ensuring you not only understand them but can implement them efficiently.
In a competitive job market, a strong problem-solving foundation is non-negotiable. IRIS Level 1 is designed for students and aspiring developers aiming for internships, entry-level software developer jobs, and placement success. We focus on practical implementation, problem-solving patterns, and time complexity analysis from day one, setting you on the path to solving code assessment-style questions with ease.
By the end, you'll have a robust portfolio of skills, ready to tackle coding assessments and the technical interview loop. Enroll now and build the unshakeable core that Level 2 (Advanced Problem-Solving) and Level 3 (System Design & Optimization) will build upon. Your journey to becoming an industry-ready developer starts here!
Key Highlights
Industry-aligned core problem-solving curriculum
Beginner-friendly structured learning
Placement and interview focused
Clear explanations with real examples
Covers most asked foundational topics
Optimized problem-solving techniques
Strong base for advanced computer science fundamentals
Designed for students & early professionals
What you will learn
Arrays & Strings Fundamentals
Learn efficient access, traversal, reversal, and duplicate detection using optimal time complexity.
Sorting, Searching & Two Pointers
Understand basic sorting, linear search, and how two-pointer techniques simplify array problems.
Linked Lists, Stacks & Queues
Master insertion, deletion, and FIFO/LIFO concepts used in real-world data flow systems.
Hashing & Sliding Window Techniques
Solve frequency-based and subarray problems using hash maps and fixed-size windows.
Graphs, Heaps & Priority Queues
Explore graph traversal basics and use heaps to solve k-largest and priority-based problems.
Recursion Fundamentals
Build recursive thinking using factorials, Fibonacci, and tail recursion patterns.
Trees & Tries Basics
Perform inorder traversals, calculate heights, and understand hierarchical data structures.
Greedy Algorithm Strategies
Learn how to make optimal local choices for scheduling and selection problems.
Modules
COURSE INTRODUCTION
2 attachments • 1 mins
Why IRIS - Level 1?
Disclaimers
ARRAYS AND STRINGS
19 attachments • 23.3 mins
THEORY BRIEFS
What will you learn from this topic?
Deep Dive - Arrays and Strings
Real-World Case Study & Use Case
Video Explanation
The Recap
9 pages
QUIZZES
Arrays - Quiz
Strings - Quiz
PROBLEM STATEMENT 1
The Brief
Video Explanation
The Recap
15 pages
PROBLEM STATEMENT 2
The Brief
Video Explanation
The Recap
15 pages
PRACTICALS
Practicing Exercises
SORTING AND SEARCHING
24 attachments • 28.29 mins
THEORY BRIEFS
What will you learn from this topic?
Deep Dive - Sorting and Searching
Real-World Case Study & Use Case
Video Explanation
The Recap
13 pages
THEORY QUIZZES
Sorting - Quiz
Searching - Quiz
Two Pointers - Quiz
PROBLEM STATEMENT 1
The Brief
Video Explanation
The Recap
15 pages
PROBLEM STATEMENT 2
The Brief
Video Explanation
The Recap
15 pages
PROBLEM STATEMENT 3
The Brief
Video Explanation
The Reacp
15 pages
PRACTICALS
Practicing Exercises
LINKED LISTS, STACKS, QUEUES AND DEQUEUES
29 attachments • 27.7 mins
THEORY BRIEFS
What will you learn from this topic?
Deep Dive - Linked Lists, Stacks, Queues and Dequeues
Real-World Case Study and Use Case
Video Explanation
The Recap
13 pages
THEORY QUIZZES
Linked Lists - Quiz
Stacks - Quiz
Queues - Quiz
Dequeues - Quiz
PROBLEM STATEMENT 1
The Brief
Video Explanation
The Recap
15 pages
PROBLEM STATEMENT 2
The Brief
Video Explanation
The Recap
PROBLEM STATEMENT 3
The Brief
Video Explanation
The Recap
15 pages
PROBLEM STATEMENT 4
The Brief
Video Explanation
The Recap
15 pages
PRACTICALS
Practicing Exercises
HASHING AND SLIDING WINDOW
19 attachments • 14.59 mins
THEORY BRIEFS
What will you learn from this topic?
Deep Dive - Hashing and Sliding Window
Real-World Case Study & Use Case
Video Explanation
The Recap
10 pages
QUIZZES
Hashing - Quiz
Sliding Window - Quiz
PROBLEM STATEMENT 1
The Brief
Video Explanation
The Recap
16 pages
PROBLEM STATEMENT 2
The Brief
Video Explanation
The Recap
15 pages
PRACTICALS
Practicing Exercises
GRAPHS TRAVERSAL, HEAPS AND PRIORITY QUEUES
24 attachments • 29.99 mins
THEORY BRIEFS
What will you learn from this topic?
Deep Dive - Graph Traversal, Heap and Priority Queue
Real-World Case Study and Use Case
Video Exlplanation
The Recap
14 pages
QUIZZES
Graphs Traversal - Quiz
Heap - Quiz
Priority Queue - Quiz
PROBLEM STATEMENT 1
The Brief
Video Explanation
The Recap
15 pages
PROBLEM STATEMENT 2
The Brief
Video Exlplanation
The Recap
15 pages
PROBLEM STATEMENT 3
The Brief
Video Exlplanation
The Recap
16 pages
PRACTICALS
Practicing Exercises
RECURSION
19 attachments • 18.75 mins
THEORY BRIEFS
What will you learn from this topic?
Deep Dive - Recursion
Real-World Case Study and Use Case
Video Explanation
The Recap
13 pages
THEORY QUIZZES
Tail Recursive Factorial - Quiz
Tail Recursive Fibonacci - Quiz
PROBLEM STATEMENT 1
The Brief
Video Explanation
The Recap
15 pages
PROBLEM STATEMENT 2
The Brief
Video Explanation
The Recap
15 pages
PRACTICAL
Practicing Exercises
TREES AND TRIES
19 attachments • 20.75 mins
THEORY BRIEFS
What will you learn from this topic?
Deep Dive - Trees and Tries
Real-World Case Study and Use Case
Video Explanation
The Recap
12 pages
THEORY QUIZZES
Trees - Quiz
Tries - Quiz
PROBLEM STATEMENT 1
The Brief
Video Explanation
The Recap
15 pages
PROBLEM STATEMENT 2
The Brief
Video Explanation
The Recap
15 pages
PRACTICAL
Practicing Exercises
GREEDY ALGORITHMS
14 attachments • 17.19 mins
THEORY BRIEFS
What will you learn from this topic?
Deep Dive - Greedy Algorithm
Real-World Case Study and Use Case
Video Explanation
The Recap
9 pages
QUIZZES
Greedy Algorithm - Quiz
PROBLEM STATEMENT 1
The Brief
Video Explanation
The Recap
15 pages
PRACTICALS
Practicing Exercises
EVALUATE CONCEPT UNDERSTANDING
3 attachments • 2 hrs
Practice 1
Practice 2
Final Practice
Certification
When you complete this course you receive a ‘Certificate of Completion’ signed and addressed personally by me.
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