Coding Interview Preparation for Data Structures and Algorithms (DSA)

Introduction

• Importance of preparation in coding interviews
• Experience with DSA and learning journey
• No formal Computer Science degree, learned online

Understanding DSA

• Definition of Data Structures and Algorithms
• Everyday example: Searching a word in a dictionary
  • Binary Search Algorithm: Efficient method for finding words
  • Difference between data storage (dictionary) and data structures
• Importance of algorithms in software engineering
  • Comparison: Efficient algorithms vs. inefficient methods (e.g., flipping pages)

Learning DSA

• Recommendation: Learn at least one Object-Oriented Programming language
  • Suggested languages: Java, JavaScript, C++, Python
  • Python: Recommended for its speed and ease of use during interviews

Starting the DSA Journey

• Learning Approach: "Learning by Doing"
  • Theoretical foundation is crucial before practicing
• Course Recommendation:
  • Algorithms by Princeton University on Coursera
    • Taught in Java, divided into 2 parts
    • Professor Sedgewick’s expertise and the course’s historical significance
    • Course context: Understanding when to use specific data structures and algorithms

Common Mistakes in Learning DSA

1. Underestimating Scope:

   • Over-completing courses (e.g., Algorithms 1 and 2) without focusing on interview relevance
   • Advice: Skip unnecessary content that’s rarely asked in interviews

2. Rushed Job Applications:

   • Completing DSA doesn’t guarantee job offers
   • Difference between knowing algorithms and applying them under time constraints
   • Solution: Practice on Leetcode to solve interview questions
     • Labeling: Easy, Medium, Hard
     • Progression: Start with easy problems, then move to mediums
     • Additional Resource: Top 10 Algorithms in Interview Questions on GeeksforGeeks

3. Misconception about Mastery:

   • Believing mastering DSA will ensure success in interviews
   • Need for behavioral interview preparation and impressing hiring managers

Job Application Strategy

• Setting realistic expectations for interviews
• Practice with less desirable companies before applying to dream jobs
• Rejections are a normal part of the process
• Maintaining a positive mindset during the journey

Conclusion

• Importance of supporting each other in the learning process
• Encouragement to continue working towards coding interview goals
• Mention of additional resources for behavioral interviews

Closing

• Thank you from the speaker, Sahil
• Encouragement to watch more content.