Max Sum Subarray of Size K | GFG POTD | Sliding Window | Java

Описание: In this video, we solve GeeksforGeeks Problem of the Day – Max Sum Subarray of Size K using the Sliding Window Technique in Java.

🔹 Problem Statement
You are given:
An integer array arr[]
An integer k
Your task is to find the maximum sum of any contiguous subarray of size k

🔹 Optimized Approach Used (Sliding Window)

1. Calculate the sum of the first k elements
2. Slide the window by:
Adding the next element
Removing the first element of the previous window
3. Keep track of the maximum sum at each step

This avoids recalculating sums repeatedly and improves performance.

📌 Time Complexity:
O( n )

📌 Space Complexity:
constant space O( 1 )

🔹 Resources
Problem Link: https://www.geeksforgeeks.org/problem...
Code Link: https://github.com/sibasundarj8/java-...

👉 This is a must-know problem for mastering Sliding Window patterns, frequently asked in coding interviews.

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