Set Mismatch Explained | LeetCode 645 | DSA in Python | Day 12 | 56/1000
Автор: leetcode Grind
Загружено: 2026-01-17
Просмотров: 4
Описание:
Today is Day 12 of my 1000 DSA YouTube Challenge and we are solving LeetCode 645 – Set Mismatch using Python.
In this video, I explain the problem in a very simple and intuitive way and then solve it using three different approaches – a hash set approach, a sorting approach, and the best interview approach using in-place marking.
You will clearly understand how to find the duplicate number and the missing number when the array should contain all numbers from 1 to n exactly once.
This video is perfect if you are a beginner in Data Structures and Algorithms or preparing for coding interviews and placements.
I also explain the time and space complexity and how to explain this solution in an interview.
This challenge is not just about solving problems, it is about discipline, consistency, and building a strong future through DSA.
LeetCode Problem: Set Mismatch
Language: Python
Day 12 | Progress: 56 / 1000
If you are also on a DSA journey, let’s grow together.
Subscribe and stay consistent with me. 🚀
#LeetCode #DSA #Python #SetMismatch #CodingInterview #1000DaysOfCode
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