Leetcode 2409 | Count Days spent Together | Explanation in Hindi with code

LeetCode 2409: Count Days Spent Together | O(1) Time Complexity (Hindi Explanation) ​In this video, we solve LeetCode 2409 - Count Days Spent Together step-by-step in Hindi using an optimal O(1) Time & Space Complexity approach. ​Instead of iterating through every single day, we convert the date strings (MM-DD) directly into total days from the start of the year using prefix month days. By calculating the overlap interval between Alice's and Bob's arrival and departure dates, we find the answer in constant time! ​📌 What You'll Learn in This Video: ​Problem Breakdown: Understanding date ranges for Alice and Bob. ​Core Logic: Converting MM-DD to day number of the year (1 to 365). ​Mathematical Approach: Finding the overlapping range using \max(\text{start}) and \min(\text{end}). ​Complexity Analysis: Why this solution runs in O(1) Time and O(1) Space. ​Clean Code Walkthrough: Easy-to-understand code implementation. ​💬 Join the Community: ​If this explanation helped you understand the optimal approach, please consider giving the video a Like 👍, Subscribing 🔔 to the channel, and dropping your questions or thoughts in the Comments below! ​#️⃣ Hashtags: ​#LeetCode #LeetCode2409 #CountDaysSpentTogether #DataStructures #Algorithms #DSAinHindi #CodingInHindi #LeetCodeHindi #O1Complexity #TimeComplexity #PythonCoding #CPP #JavaCoding #CompetitiveProgramming #SoftwareEngineering #InterviewPreparation