Maximum Difference by Remapping a Digit | Easy | 2 Ways | Leetcode 2566 | codestorywithMIK

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Published on June 14, 2025 4:43:08 AM ● Video Link: https://www.youtube.com/watch?v=i8UYdogHsCA

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Hi Everyone, this is the 10th video of our Playlist "Solving only using C++ STLs/JAVA JCF".
Now we will be solving an easy Problem - Maximum Difference by Remapping a Digit | Easy | 2 Ways | Leetcode 2566 | codestorywithMIK

I will explain it in full detail so that it becomes easy to understand. We will find the reason behind everything so that we understand why we did what we did.
And we will do a complete dry run.

Problem Name : Maximum Difference by Remapping a Digit | Easy | 2 Ways | Leetcode 2566 | codestorywithMIK
Company Tags : will update later
Code Github(C++ & JAVA) : https://github.com/MAZHARMIK/Interview_DS_Algo/blob/master/Greedy/Leetcode Easy/Maximum Difference by Remapping a Digit.cpp
Leetcode Link : https://leetcode.com/problems/maximum-difference-by-remapping-a-digit/description/


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Video Summary :
Approach 1 (Simple iterating on digits):
This approach converts the number to a string and manually scans each digit. It finds the first digit that isn't '9' to replace all its occurrences with '9' for the maximum value. Then it replaces all occurrences of the first digit with '0' for the minimum value.

Approach 2 (Using C++ STLs):
This method leverages STL functions like find_first_not_of and replace for cleaner and more concise logic. It finds the first non-'9' digit and replaces it with '9' across the string, and similarly replaces the first digit with '0' to get the minimum.



✨ Timelines✨
00:00 - Introduction
0:16 - Motivation
0:26 - Problem Explanation
2:14 - Thought Process for Approach-1
13:15 - Using C++ STL and JAVA Standard Library Functions
21:14 - Coding it up in C++
24:00 - Coding it up in Java


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