Sort 0s, 1s and 2s | TCS, Infosys, Accenture | Dutch National Flag Algorithm | DSA
Автор: Let’s Crack It
Загружено: 2026-01-08
Просмотров: 72
In this video, I explain how to sort 0s, 1s, and 2s in an array using an efficient DSA approach without using any built-in sorting function.
This problem is frequently asked in service-based company interviews such as TCS, Infosys, Accenture, and Cognizant.
🔹 Topics Covered:
Problem explanation
Naive approach
Optimized approach (Dutch National Flag Algorithm)
Time & Space Complexity
Interview tips
🔹 Key Details:
Language used: C++
Time Complexity: O(n)
Space Complexity: O(1)
🔹 Suitable For:
TCS NQT
Infosys Interview
Accenture Coding Round
Cognizant DSA Questions
Beginners learning DSA
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#DSA #TCS #Infosys #Accenture #Cognizant #CodingInterview #Array #C++
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