Zero Array Transformation II | Brute Force | Better | Leetcode 3356 | codestorywithMIK

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codestorywithMIK

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Published on March 13, 2025 5:04:19 AM ● Video Link: https://www.youtube.com/watch?v=8xHewtmPULs

Game:

Brute Force (2003)

Duration: 0:00

12,859 views

626

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Difference Array Technique: Concepts & Qns :    • Introduction | What | How | Differenc...  

Hi Everyone, this is the 3rd video of our Playlist "Difference Array Technique: Concepts & Qns".
Now we will be solving a very a good problem on already studied concept on "Difference Array Technique: Concepts & Qns" -
Zero Array Transformation II | Brute Force | Better | Leetcode 3356 | codestorywithMIK

We will start from Super Brute Force and then to Better Brute Force using Difference Array Technique and then we will move to Better Approach using Difference Array + Binary Search

Problem Name : Zero Array Transformation II | Brute Force | Better | Leetcode 3356 | codestorywithMIK
Company Tags : will update later
My solutions on Github(C++ & JAVA) : https://github.com/MAZHARMIK/Interview_DS_Algo/blob/master/Arrays/Difference Array Technique/Zero Array Transformation II.cpp
Leetcode Link : https://leetcode.com/problems/zero-array-transformation-ii/description


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Difference Array Technique: Concepts & Qns :    • Introduction | What | How | Differenc...  
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Video Summary :
Approach 1 (Linear Query Check using Difference Array):
This approach applies each query one by one using a difference array and checks if the entire array becomes zero. It iterates over all queries sequentially until a valid solution is found.

Approach 2 (Binary Search on Queries using Difference Array):
Instead of checking queries sequentially, this approach uses binary search to find the minimum number of queries needed. It efficiently narrows down the required queries while applying updates using a difference array.

✨ Timelines✨
00:00 - Introduction
0:15 - Motivation
0:35 - Problem Explanation
3:30 - Brute Force
7:43 - Why Difference Array Technique
10:31 - Recap Difference Array Technique
28:13 - Coding using Difference Array Technique + linear query check
35:39 - Better Approach Difference Array Technique + binary search
40:22 - Coding Better Approach
41:49 - Closing Note on Linear Solution

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