Скачать или смотреть Count Reverse Pairs | Merge Sort & Reverse Pairs LeetCode | GFG POTD | Java & C++ | 14-08-25

Master Merge Sort in DSA!

In this video, we solve three important problems using Merge Sort:
GFG POTD - Count Reverse Pairs
LeetCode 493 - Reverse Pairs
LeetCode 912 – Sort an Array

Other Merge Sort Problems: Explore the power of divide-and-conquer for counting problems and sorting.

💡 What you’ll learn:
How merge sort can do more than just sorting.
Efficient O(n log n) solutions for tricky counting problems.
Step-by-step dry run to understand the logic.

Timestamps:

00:00 Intro
00:15 Question Explanation
02:48 Brute Force
04:06 Optimal Approach Logic
07:08 Dry Run of Logic
11:00 Merge Sort & Dry Run
17:08 Valid Pairs count Logic
19:05 Java Code
22:49 Merging Logic
27:00 C++ code
30:25 TC & SC

Don't forget to like, comment, and subscribe if this helped you!
Share with your friends preparing for interviews😊

#coding #youtube #programming #dsa #gfg #leetcode #interview #technical #codinginterview #java #C++