Prefix Sum | Difference Array | Tamil

🚀 *Welcome to the DSA in Tamil Series!*
In this live session, we'll learn *Difference Array* , an advanced variation of *Prefix Sum* that helps solve *Range Update* problems efficiently.

When multiple updates need to be applied over a range of indices, updating each element individually becomes inefficient. The Difference Array technique allows us to perform each range update in constant time and reconstruct the final array using Prefix Sum. This technique is commonly used in coding interviews, competitive programming, and real-world scenarios involving bulk updates.
## 📖 What you'll learn in this session

* What is a Difference Array?
* Why do we need Difference Array?
* Building the Difference Array
* Performing Range Updates efficiently
* Reconstructing the original array using Prefix Sum
* Time & Space Complexity
Whether you're preparing for coding interviews, learning DSA from scratch, or improving your problem-solving skills, this session will help you understand the concept with clear explanations and practical examples.

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## 🎯 Who should watch?

* College Students
* Software Engineers preparing for interviews
* Beginners learning DSA
* Competitive Programmers

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⏰ Timestamps
00:00 Intro
02:43 Revising Prefix Sum
09:20 Difference array
31:42 Maximum Population Year
42:33 Corporate Flight Bookings
50:24 Car Pooling
58:44 Q&A

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## 📺 DSA in Tamil Playlist

https://www.youtube.com/playlist?list=PLmTYqDepeu2-tzxaANEzQdbzKClPz7bOG

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## 🌐 Connect with me

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#DSA #PrefixSum #RangeSum #CodingInterview #CompetitiveProgramming #TamilProgramming #DSAInTamil #Algorithms #LeetCode #ProblemSolving

Видео Prefix Sum | Difference Array | Tamil канала Code With Rohinth