📣 Advanced algorithms, where data structures turn into powerful solutions.
📘 Algorithms – Level 6
Advanced Algorithms, Advanced Data Structures, and Professional Problem Solving
🗝️ About This Course
This is the 23rd course in your programming journey — and the course where algorithmic mastery is built.
By now, you have already:
1️⃣ Built strong programming foundations
2️⃣ Mastered algorithmic thinking and problem solving
3️⃣ Learned clean code and Divide & Conquer
4️⃣ Worked deeply with data structures (basic and advanced)
5️⃣ Built real applications and systems
6️⃣ Gained strong experience with C#, databases, and architecture
At this stage, programming is no longer about syntax or tools.
👉 It is about choosing the right algorithm
👉 It is about performance, efficiency, and correctness
👉 It is about thinking like a system designer
This course exists to take your problem-solving skills to an advanced, professional level.
🔐 What Makes This Course Different?
🔹 Focuses on advanced algorithms, not basics
🔹 Uses advanced data structures to solve real problems
🔹 Explains why an algorithm works, not just how
🔹 Connects theory with implementation step by step
🔹 Emphasizes time & space complexity in every solution
🔹 Contains a very large number of practice problems
🔹 Builds confidence in solving hard problems, not toy examples
This course teaches a critical lesson:
👉 Algorithms are tools — knowing when and why to use them is the real skill.
📖 What You Will Learn?
By the end of this course, you will be able to:
🔹 Design and analyze advanced algorithms
🔹 Apply searching and sorting algorithms correctly
🔹 Work confidently with trees (BST, AVL, Red-Black Trees)
🔹 Traverse trees and graphs using DFS and BFS
🔹 Solve shortest-path problems using Dijkstra
🔹 Use greedy algorithms for optimization problems
🔹 Apply heaps and priority queues effectively
🔹 Select the best algorithm based on constraints and complexity
You will stop asking “How do I code this?” and start asking “What is the best algorithm here?”
🧱 How This Course Is Structured?
This course is heavy, deep, and practice-intensive:
🔹 Core algorithm explanations
🔹 Step-by-step implementations
🔹 Advanced tree and graph algorithms
🔹 Hundreds of structured problems covering:
• Stacks & Queues
• Trees & Graphs
• Hash tables & sets
• Heaps & priority queues
• Real-world simulations
For each problem:
- You analyze the problem
- You choose the data structure
- You select the algorithm
- You study the professional
- solution
- You learn optimization techniques
📌 This is where data structures and algorithms fully connect.
🧠 Why This Course Comes Here?
Advanced algorithms must not be taught early.
If taught too soon:
❌ Students feel overwhelmed
❌ Algorithms turn into memorization
❌ Many quit programming completely
Here — at this stage:
✅ You understand foundations
✅ You can reason about complexity
✅ You are mentally ready
✅ Algorithms feel logical, not scary
This placement is intentional and critical.
🧑💻 Who This Course Is For?
✅ Students who completed Data Structures – Level 2
✅ Learners aiming for strong backend or system roles
✅ Developers preparing for advanced interviews
✅ Programmers who want real algorithmic strength
✅ Anyone serious about mastering problem solving
❌ Not for beginners
❌ Not for shortcut seekers
🎓 Certification & Learning Outcomes
Upon successful completion of this course, the learner will earn a:
Certificate in Algorithms – Level 6, verifying the ability to:
🔹 Design and analyze advanced algorithms
🔹 Use trees, graphs, and heaps professionally
🔹 Solve complex problems efficiently
🔹 Apply correct data structures in real scenarios
🔹 Think algorithmically at a system level
🔐 This certification confirms advanced problem-solving capability, not basic knowledge.
🎓 Final Outcome
After completing this course, you will not just “know algorithms”.
You will be able to:
🔹 Analyze problems deeply
🔹 Choose optimal solutions confidently
🔹 Control performance and scalability
🔹 Solve hard problems without fear
🔹 Think like a professional software engineer
🧠 Advanced algorithms build powerful thinkers. Powerful thinkers build great software.
Course Content
- What is AVL Tree? and Why? (18:11)
- Quiz 1
- Introduction to Rotations (33:14)
- Quiz 2
- Type 1: RR - Right Rotation (Single Right Rotation) (12:48)
- Quiz 3
- Type 2: LL - Left Rotation (Single Left Rotation) (9:18)
- Quiz 4
- Type 3: LR - Left-Right Rotation (Double Rotations) (9:02)
- Quiz 5
- Type 4: RL- Right-Left Rotation (Double Rotations) (5:00)
- Quiz 6
- Rotations Summary (7:46)
- Quiz 7
- AVL Tree Implementation Code.
- AVL Tree Implementation Code - Explanation. (22:01)
- Deletion in AVL Tree (13:59)
- Deletion Implementation Code.
- Deletion Implementation Code - Explanation. (9:41)
- Implementing Search in AVL Tree
- Real Life Application using AVL Tree - Autocomplete.
- Introduction to RedBlack Tree (22:47)
- Quiz
- Insert Operation (17:27)
- Implementing Insertion In C# (13:34)
- Search Operation (6:30)
- Delete Operation Algorithm Part 1
- Quiz 1
- Types of Violations Post-Deletion (15:01)
- Quiz 2
- Fixing Violations - Cases (DB) (11:44)
- Fix Violations - Case 1 – Sibling is Red (7:06)
- Fix Violations - Sub Case 2.1 - Sibling's children are both black. (5:17)
- Fix Violations - Sub-Sub Case 2.2.1 - Sibling's far child is red (5:51)
- Fix Violations - Sub-Sub Case 2.2.2 - Sibling's near child is red (5:08)
- Fix Violations - Summary
- Implementing Delete Operations in C# (22:45)
- Which is better AVL Tree or RedBlack Tree?
- Dijkstra Algorithm
- Quiz 1
- How Does Dijkstra’s Algorithm Work?
- Dijkstra’s Algorithm Implementation (Adjacency Matrix : O(V^2) ) (11:00)
- Shortest time to travel Problem
- Shortest time to travel Problem - Solution
- Optimizing Implementation of Dijksta's Algorithm Using (Adjacency List with Min-Heap: O((V+E) log V))
- Implement Browser Back Button
- Implement Browser Back Button - Solution
- Convert Decimal to Binary
- Convert Decimal to Binary - Solution
- Undo Operations in a Calculator
- Undo Operations in a Calculator - Solution
- Printer Job Scheduling
- Printer Job Scheduling - Solution
- Traffic Signal System Simulation
- Traffic Signal System Simulation - Solution
- Ticketing System Simulation
- Ticketing System Simulation - Solution
- Implementing Simple Backtracking
- Implementing Simple Backtracking - Solution
- Task Scheduling
- Task Scheduling - Solution
- Customer Service
- Customer Service - Solution
- Web Page Request Handling
- Web Page Request Handling - Solution
- Reverse a Queue
- Reverse a Queue - Solution
- Palindrome Queue
- Palindrome Queue - Solution
- Generate Binary Numbers
- Generate Binary Numbers - Solution
- Sort a Queue
- Sort a Queue - Solution
- Interleave Queue Elements
- Interleave Queue Elements - Solution
- Rotate a Queue
- Rotate a Queue - Solutions
- Merge Two Sorted Queues
- Merge Two Sorted Queues - Solution
- First Non-Repeating Character in a Stream
- First Non-Repeating Character in a Stream - Solution
- Queue Using Two Stacks
- Queue Using Two Stacks - Solution
- Rearrange Queue Alternately
- Rearrange Queue Alternately - Solution
- Implement a Priority Queue
- Implement a Priority Queue - Solution
- Rearrange Even and Odd Elements
- Rearrange Even and Odd Elements - Solution
- Clone a Queue Without Using Extra Space
- Clone a Queue Without Using Extra Space - Solution
- Find Middle Element in a Queue
- Find Middle Element in a Queue - solution
- Reverse a String
- Reverse a String - Solution
- Check Balanced Parentheses
- Check Balanced Parentheses - Solution
- Check palindrome using a stack
- Check palindrome using a stack - Solution
- Evaluate a Postfix Expression
- Evaluate a Postfix Expression - Solution
- Basic Calculator
- Basic Calculator - Solution
- Remove Invalid Parentheses
- Remove Invalid Parentheses - Solution
- Store and Retrieve Student Grades
- Store and Retrieve Student Grades - Solution
- Store Book Information
- Store Book Information - Solution
- Translate Words Between Languages
- Translate Words Between Languages - Solution
- Count Word Frequencies in a Text
- Count Word Frequencies in a Text - Solution
- Phonebook Application
- Phonebook Application - Solution
- Track Unique Visitors to a Website
- Track Unique Visitors to a Website - Solution
- Check for Duplicate Entries in Real-Time
- Check for Duplicate Entries in Real-Time - Solution
- Dynamic Skill Matching
- Dynamic Skill Matching - Solution
- Find the Frequency of Each Character
- Find the Frequency of Each Character - Solution
- Find Longest Consecutive Sequence
- Find Longest Consecutive Sequence - Solution
- Find Majority Element
- Find Majority Element - Solution
- Find Duplicate Elements
- Find Duplicate Elements - Solution
- Find All Unique Elements
- Find All Unique Elements - Solution
- Find Words That Can Be Typed Using One Row of Keyboard
- Find Words That Can Be Typed Using One Row of Keyboard - Solution
- Find Missing Number in an Array
- Find Missing Number in an Array - Solution
- Find Common Characters in Strings
- Find Common Characters in Strings - Solution
- Find Elements Not in the Second Array
- Find Elements Not in the Second Array - Solution
- Find Numbers Disappeared in an Array
- Find Numbers Disappeared in an Array - Solution
- Check if Two Arrays are Disjoint
- Check if Two Arrays are Disjoint - Solution
- Check If a Sentence Is Pangram
- Check If a Sentence Is Pangram - Solution
- Find Elements in a Range
- Find Elements in a Range - Solution
- Find Smallest and Largest Element
- Find Smallest and Largest Element - Solution
- Union of Two SortedSets
- Union of Two SortedSets - Solution
- Remove Elements Greater Than a Value
- Remove Elements Greater Than a Value - Solution
- Find Elements Less Than a Value
- Find Elements Less Than a Value - Solution
- Count Elements Greater Than a Value
- Count Elements Greater Than a Value - Solution
- Remove All Elements Within a Range
- Remove All Elements Within a Range - Solution
- Find All Elements Not in a Range
- Find All Elements Not in a Range - Solution
- Find Count of Elements Less Than or Equal to a Value
- Find Count of Elements Less Than or Equal to a Value - Solution
- Check If Set Contains Multiple Ranges
- Check If Set Contains Multiple Ranges - Solution
- Real-Time Leaderboard
- Real-Time Leaderboard - Solution
- Dynamic List of Students in a Classroom
- Dynamic List of Students in a Classroom - Solution
- Shopping Cart for an E-commerce App
- Shopping Cart for an E-commerce App - Solution
- Real-Time Stock Prices
- Real-Time Stock Prices - Solution
- Task Management System
- Task Management System - Solution
- Live Chat Application
- Live Chat Application - Solution
- Dynamic Weather Updates
- Dynamic Weather Updates - Solution
- Real-Time Notification System
- Real-Time Notification System - Solution
- Store Marks of Students in Multiple Subjects
- Store Marks of Students in Multiple Subjects - solution
- Store Sales Data by Quarter
- Store Sales Data by Quarter - Solution
- Dynamic Seating Arrangement in a Classroom
- Dynamic Seating Arrangement in a Classroom - Solution
- Daily Sales for Different Products
- Daily Sales for Different Products - Solution
- Flight Seat Reservations
- Flight Seat Reservations - Solution
- Survey Responses
- Survey Responses - Solution
- City Temperature Data
- City Temperature Data - Solution
- Return Multiple Values from a Function
- Return Multiple Values from a Function - Solution
- Track Player Stats in a Game
- Track Player Stats in a Game - Solution
- Store and Compare Employee Details
- Store and Compare Employee Details - Solution
- Return Success or Failure from a Function
- Return Success or Failure from a Function - Solution
- Simplified Address Representation
- Simplified Address Representation - Solution
- Light Control System
- Light Control System - Solution
- User Survey Results
- User Survey Results - Solution
- Optimizing Space in Large Data
- Optimizing Space in Large Data - Soution
- Scheduling Tasks
- Scheduling Tasks - Solution
- Password Strength Checker
- Password Strength Checker - Solution
- Password Policy Enforcement
- Password Policy Enforcement - Solution
- Traffic Light Simulation
- Traffic Light Simulation - Solution
- Voting System
- Voting System - Solution
- Count the Number of True Bits / False Bits in a BitArray
- Count the Number of True Bits / False Bits in a BitArray - Solution
- Perform Bitwise AND Between Two BitArrays
- Perform Bitwise AND Between Two BitArrays - Solution
- Convert a BitArray to an Integer
- Convert a BitArray to an Integer - Solution
- Create a BitArray from an Integer
- Create a BitArray from an Integer - Solution
- Copy Hashtable to Another Hashtable
- Copy Hashtable to Another Hashtable - Solution
- Sort and Remove Duplicates from a List
- Sort and Remove Duplicates from a List - Solution
- Find Missing Numbers in a Range
- Find Missing Numbers in a Range - Solution
- Track Unique Active Users by Login Time
- Track Unique Active Users by Login Time - Solution
- Automatically Sort Event Timelines
- Automatically Sort Event Timelines - Solution
- Organize Movie Showtimes
- Organize Movie Showtimes - Solution
- Manage Meeting Times for a Calendar
- Manage Meeting Times for a Calendar - Solution
- Track Unique Items in a Shopping Cart
- Track Unique Items in a Shopping Cart - Solution
- Manage Unique Flight Times
- Manage Unique Flight Times - Solution
- Manage Tags in a Blogging Platform
- Manage Tags in a Blogging Platform - Solution
- Autocomplete Suggestions in a Search Feature
- Autocomplete Suggestions in a Search Feature - Solution
- Schedule Tasks Based on Priority
- Schedule Tasks Based on Priority - Solution
- Manage Reserved Seats in a Theater
- Manage Reserved Seats in a Theater - Solution
- File System Organization
- File System Organization - Solution
- Hierarchical Employee Management
- Hierarchical Employee Management - Solution
- Directory Size Calculation
- Directory Size Calculation - Solution
- Priority Scheduling (Min-Heap Implementation)
- Priority Scheduling (Min-Heap Implementation) - Solution
- Decision-Making Process
- Decision-Making Process- Solution
- Representing a Social Network
- Representing a Social Network - Solution
- Binary Search Tree for Product Inventory
- Binary Search Tree for Product Inventory - Solution
- File Permission System
- File Permission System - Solution
- Category Hierarchy
- Category Hierarchy -Solution
- Maximum Depth of a Binary Tree
- Maximum Depth of a Binary Tree - Solution
- Determine if given Two Trees are Identical or not?
- Determine if given Two Trees are Identical or not? - Solution
- Print the largest value at each level of a binary tree.
- Print the largest value at each level of a binary tree - Solution