Learn Data Structures and Algorithms from Scratch

Course Information

• Duration: January 6, 2025 - February 14, 2025
• Schedule: Monday to Friday, 6 PM - 7 PM
• Trainers:
  • Muhammad Bilal
  • Ahmad Fakhar
• Moderators:
  • Muhammad Ibrahim Qasmi
  • Tayyab Sajjad

Course Contents

Week 1: Introduction to DSA and Array Operations

Day 1 - Introduction to DSA & Array Operations

• 📝 Lecture Notes
• 📹 Recorded Lecture
• 💻 Colab Notebook
• Concepts Covered:
  • Fundamentals of Data Structures and Algorithms
  • Array Operations (Insertion, Deletion, Traversal)
  • Array Implementation in Python

Day 2 - Time & Space Complexity

• 📝 Lecture Notes
• 📹 Recorded Lecture
• 💻 Colab Notebook
• Concepts Covered:
  • Big O Notation
  • Time Complexity Analysis
  • Space Complexity Analysis

Day 3 & 4 - LeetCode Problems

• 📝LeetCode problems Solved in Session

• 📹 Two Sum

• 📹 Concatenation of Array

• 📹 Counting Words With a Given Prefix

• 📹 Single Number

• Recorded Lect For Day 3

• Recorded Lect For Day 4

• Practice Problems:

  • Array Manipulation
  • Search and Sort
  • Basic Problem-Solving

Day 5 - Presentation Day

• Present By hanzla | Problem no 217

• ✍️ Contain duplicate

• 📹 Recorded Lecture

Week 2: String and Hashmap

Day 1 - String Operations

• 📝 Lecture Notes
• 📹 Recorded Lecture
• 💻 Colab Notebook
• Concepts Covered:
  • String Basics
  • String Operations
  • Implementation Techniques

Day 2 - String Array Operations

• 📝 1662. Check If Two String Arrays are Equivalent, 2185. Counting Words With a Given Prefix
• 📹 Recorded Lecture

Day 3 - Hashmap Operations

• 📝 Lecture Notes
• 📹 Recorded Lecture
• 💻 Colab Notebook
• Concepts Covered:
  • Hashmap Fundamentals
  • Implementation Strategies
  • Common Operations

Day 4 - LeetCode problems

• 📝LeetCode problems Solved in Session

• 📹 Two Sum

• 📹 First Unique Character in a String

• Recorded Lecture

Day 5 - Presentation Day

• Present By Safiullah Saleem and Ahmad Fakhar

• ✍️ 2351. First Letter to Appear Twice

• ✍️ 706. Design HashMap

• 📹 Recorded Lecture

Week 3: Stack and Queue

Day 1 - Stack Operations

• 📝 Lecture Notes
• 📹 Recorded Lecture
• 💻 Colab Notebook
• Concepts Covered:
  • Stack ADT
  • Implementation Methods
  • Basic Operations
  • 1047. Remove All Adjacent Duplicates In String

Day 2 - Stack Problems

• 📝 2390. Removing Stars From a String
• 📝 682. Baseball Game
• Recorded Lecture

Day 3 - Queue Operations

• 📝 Lecture Notes
• 📹 Recorded Lecture
• 💻 Colab Notebook
• Concepts Covered:
  • Queue ADT
  • Implementation Methods
  • Basic Operations
  • 232. Implement Queue using Stacks

Day 4 - Queue Problems| LeetCode

• 📝 LeetCode Problem no 1700
• Recorded Lecture

Day 5 - Presentation Day

• 📹 Saifullaha Saleem
• 844. Backspace String Compare
• Recorded Lecture

Week 4: Two Pointers Technique

Day 1 - Introduction to Two Pointers presented by Quaid Khalid, Asim Khan, Ahmad Fakhar

• 📝 Lecture Notes
• 📹 Recorded Lecture
• Concepts Covered:
  • Two Pointers Pattern
  • Implementation Strategies
  • Two Sum Problem
• Leetcode Problems:
  • 26. Remove Duplicates from Sorted Array
  • 27. Remove Element

Days 2-4 - LeetCode Problems

• 26. Remove Duplicates from Sorted Array

• 27. Remove Element

• 167. Two Sum II - Input Array Is Sorted

• 125. Valid Palindrome

• 345. Reverse Vowels of a String

• 344. Reverse String

• 📹 DAY 2 recording

• 📹 DAY 3 recording

• 📹 DAY 4 recording

Day 5 - Presentation Day

• 📹 Student Presentations
• 2810. Faulty Keyboard
• 75. Sort Colors
• 💡 Solution Approaches
• ✍️ Code Reviews
• 📹 DAY 5 recording

Week 5: Linked List

Day 1 - Linked List Presented by Ahmad Fakhar

• 📝 Lecture Notes
• 📹 Recorded Lecture
• Concepts Covered:
  • Linked List Basics
  • Singly Linked List Operations
  • Implementation Methods
• Leetcode Problems
  • 83. Remove Duplicates from Sorted List

Day 2 - Linked List Problems presented by Ahmad Fakhar

• Leetcode Problems
• 📝 876. Middle of the Linked List, 2095. Delete the Middle Node of a Linked List
• 📹 Recorded Lecture

Day 3 - Linked List Problems presented by Ahmad Fakhar

• Leetcode Problems
• 203. Remove Linked List Elements
• 📹 Recorded Lecture

Day 4 - Linked List Problems presented by Ahmad Fakhar

• Leetcode Problems
• 21. Merge Two Sorted Lists
• 📹 Recorded Lecture

Day 5 - Presentation Day presented by Safiullah Saleem,Ahmad Fakhar

• 206. Reverse Linked List
• 📹 Recorded Lecture

Week 6: Binary Search

Day 1 - Binay search Presented by M Bilal

• 📝 Lecture Notes
• 📹 Recorded Lecture
• Concepts Covered:
  • Binay search
  • Implementation Methods
  • One way & Two way

Day 2 -Binay search Problems presented by Ahmad Fakhar

• Leetcode Problems
• 📝 704. Binary Search, 35. Search Insert Position
• 📹 Recorded Lecture

Day 3 - String and its operations & Problems presented by Suffiullah & Ahmad Fakhar

• Leetcode Problems
• String and its operations & 242. Valid Anagram
• 📹 Recorded Lecture

Day 4 - Two Pointer + Example Problems presented by Suffiullah & Ahmad Fakhar

• Leetcode Problems
• Two Pointer + Example 153. Find Minimum in Rotated Sorted Array
• 📹 Recorded Lecture

Day 5 - Presentation Day presented by Safiullah Saleem,Ahmad Fakhar

• Leetcode Problems
• 374. Guess Number Higher or Lower 3174. Clear Digits
• 📹 Recorded Lecture

Resources

Essential Links

• 🔗 Course Repository
• 📚 Additional Reading Materials
• ⭐ LeetCode Problem Set
• 💬 Discussion Forum

Prerequisites

• Basic Python programming knowledge
• Understanding of basic mathematics
• Laptop with Python installed

Weekly Presentation Guidelines

• Present your solution approach
• Explain time and space complexity
• Code walkthrough
• Q&A session

Getting Help

• Open an issue for technical problems
• Use discussion forum for concept clarifications
• Contact moderators for administrative queries

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