3463 & 3461 Check If Digits Are Equal in String After Operations II | nCr | Luca's Theorem | Pascals

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3463. Check If Digits Are Equal in String After Operations II | nCr | Luca's Theorem | Pascal's Triangle | Chinese Remainder Theorem

Structured DSA (Basics to Advanced) Practice - https://codewitharyan.com/cwa-sheet/practice-problems

My Uber Interview Experience - https://youtu.be/VGYJIX5yl74
My Coinbase Interview Experience - https://youtu.be/IjOC18b_dCw
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..... more coming soon (along with LLD course on Second Channel)

Most Frequently asked questions based on Leetcode Premium - https://codewitharyan.com/cwa-sheet/aryan-dsa-master-sheet

LLD Syllabus which we gonna cover - https://codewitharyan.com/system-design/low-level-design

Pascal's Triangle - https://youtu.be/QK3smaEEtI0
nCr - https://www.youtube.com/watch?v=0nPF0QR2Qzg
Mod Inverse - https://www.youtube.com/watch?v=QPKyT2YGnHY

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CODE - https://leetcode.com/problems/check-if-digits-are-equal-in-string-after-operations-ii/submissions/1552520237/

Code (Brute Force) - https://leetcode.com/problems/check-if-digits-are-equal-in-string-after-operations-i/submissions/1552530137/

✨ Timelines✨
0:00 - Problem Explanation
1:28 - Brute Force (Part-I)
3:30 - Code Explanation
4:37 - Observation of Pascal's Triangle
9:10 - Pascals & nCr
13:49 - Finding nCr mod (nonPrime) via Chinese Remainder Theorem help
21:10 - Finding nCr mod (prime) via Lucas Theorem
30:15 - Re-cap
33:28 - Code Explanation
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#programming #Interviews #leetcode #faang #maang #datastructures #algorithms

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