Industry Readiness Integrated Series (IRIS) – Proficiency Level 2
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11 modules
English
Certificate of completion
Lifetime access
Level up your problem-solving arsenal with IRIS Level 2. Master advanced computer science fundamental patterns—AVL Trees, DFS/BFS, Divide & Conquer—and solve the complex problems top tech companies ask.
Overview
You've mastered the basics. Now it's time to bridge the gap between foundational knowledge and cracking the technical interview. Welcome to Industry Readiness Integrated Series (IRIS) - Proficiency Level 2, the intermediate course designed to transform you from a coder who solves problems into an engineer who solves complex systems.
Building directly on Level 1, this course dives deep into the patterns and optimizations that separate average candidates from hired ones. If you've ever felt stuck moving beyond beginner-level problems, this is your roadmap. We move beyond simple arrays into two-pointer techniques for sub-array sums, beyond basic trees into AVL rotations and balanced tree insertions, and beyond simple recursion into divide and conquer algorithms like Merge Sort.
In this course, you will tackle the core complexities of technical interviews: collision handling in hashing, variable sliding windows for longest substrings, cycle detection in linked lists, and connectivity problems using DFS/BFS in graphs. We will integrate data structures—like using queues for traversals and heaps for merging k-sorted lists—to solve problems with moderate to high constraints.
If your goal is to secure a software engineering internship, a placement at a product-based company, or to ace the intermediate rounds of coding interviews, Level 2 is your essential next step. Prepare to optimize your code, manage complexity, and think like a senior developer. Complete this course to unlock IRIS Level 3, where we tackle System Design and High-Performance Optimization.
Key Highlights
Advanced CS Fundamental Patterns Covered
Medium-to-Hard Problem Solving
AVL Trees & Balancing
Graph DFS/BFS Traversal
Divide & Conquer Algorithms
Complex Sliding Window Logic
Merge K-Lists with Heaps
Optimized Complexity Analysis
What you will learn
Advanced Arrays & Strings
Move beyond basic access to integrate Two Pointers for solving complex sub-array sums and managing moderate input constraints.
Optimized Sorting & Searching
Implement quicksort hybrids, binary search on sorted datasets, and master cycle detection for complex data structures.
Integrated Linear Structures
Merge sorted lists efficiently and utilize queues for moderate graph traversals; apply deques for sophisticated sliding window problems.
Complex Hashing & Variable Windows
Handle collision scenarios in two-sum variants and master variable-size sliding windows to find longest substrings with unique constraints.
Graph Connectivity with DFS/BFS & Heaps
Implement DFS/BFS to solve connectivity problems and utilize Priority Queues to merge k-sorted lists efficiently.
Balanced Trees with AVL Rotations
Go beyond basic traversals to implement AVL rotations for balanced tree insertions and manage moderate-depth tree operations.
Advanced Greedy Strategies
Solve complex optimization problems, including the fractional knapsack and coin change variants, using refined greedy algorithms.
Divide and Conquer with Recursion
Break complex problems into manageable parts with Merge Sort, applying recursive strategies to enhance sorting and problem-solving efficiency.
Modules
COURSE INTRODUCTION
2 attachments • 4 mins
Why IRIS - Level 2?
Disclaimers
ARRAYS AND STRINGS
19 attachments • 16.67 mins
THEORY BRIEFS
What will you learn 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
16 pages
PROBLEM STATEMENT 2
The Brief
Video Explanation
The Recap
16 pages
PRACTICALS
Practicing Exercises
SORTING AND SEARCHING
23 attachments • 24.57 mins
THEORY BRIEFS
What you will learn in this Topic?
Deep Dive - Sorting and Searching
Real-World Case Study & Use Case
Video Explanation
The Recap
15 pages
THEORY QUIZZES
Sorting - Quiz
Searching - 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 Recap
15 pages
PRACTICALS
Practicing Exercises
Linked Lists, Stacks, Queues and Dequeues
24 attachments • 24.68 mins
THEORY BRIEFS
What you will learn in this Topic?
Deep Dive - Linked Lists, Stacks, Queues and Dequeues
Real-World Case Study & Use Case
Video Explanation
The Recap
15 pages
QUIZZES
Binary Search - Quiz
Quicksort Hybrid - Quiz
Variable Window - Quiz
PROBLEM STATEMENT 1
The Brief
Video Explanation
The Recap
16 pages
PROBLEM STATEMENT 2
The Brief
Video Explanation
The Recap
16 pages
PROBLEM STATEMENT 3
The Brief
Video Explanation
The Recap
15 pages
PRACTICALS
Practicing Exercises
Hashing and Sliding Window
19 attachments • 21.83 mins
THEORY BRIEFS
What you will learn in this Topic?
Deep Dive - Hashing and Sliding Window
Real-World Case Study & Use Case
Video Explanation
The Recap
12 pages
THEORY QUIZZES
Hashing - Quiz
Sliding Window - 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
Graphs Traversal, Heaps and Priority Queues
19 attachments • 23.16 mins
THEORY BRIEFS
What you will learn in this Topic?
Deep Dive - Graphs Traversal , Heaps and Priority Queues
Real-World Case Study & Use Case
Video Explanation
The Recap
11 pages
QUIZZES
BFS for Connectivity - Quiz
Merge K Sorted Lists - Quiz
PROBLEM STATEMENT 1
The Brief
Video Explanation
The Recap
16 pages
PROBLEM STATEMENT 2
The Brief
Video Explanation
The Recap
16 pages
PRACTICALS
Practicing Exercises
Recursion
19 attachments • 23.63 mins
THEORY BRIEFS
What you will learn in this Topic?
Deep Dive - Recursion
Real-World Case Study & Use Case
Video Explanation
The Recap
11 pages
THEORY QUIZZES
Inorder Traversal of a Binary Tree - Quiz
Balanced Tree Insertion with AVL Rotation - 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
Trees and Tries
19 attachments • 14.47 mins
THEORY BRIEFS
What you will learn in this Topic?
Deep Dive - Trees and Tries
Real-World Case Study & Use Case
Video Explanation
The Recap
15 pages
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
PRACTICALS
Practicing Exercises
Greedy Algorithm
19 attachments • 23.21 mins
THEORY BRIEFS
What you will learn in this Topic?
Deep Dive - Greedy Algorithm
Real-World Case Study & Use Case
Video Explanation
The Recap
12 pages
QUIZZES
Fractional Knapsack - Quiz
Coin Change - 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
Divide and Conquer with Recursion
14 attachments • 14.75 mins
THEORY BRIEFS
What you will learn in this Topic?
Deep Dive - Divide and Conquer with Recursion
Real-World Case Study & Use Case
Video Explanation
The Recap
14 pages
THEORY QUIZZES
Divide and Conquer with Recursion - 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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