Sliding Window pattern
Max Sum Subarray of Size K
Given an integer array and a window size k, find the maximum sum among all contiguous subarrays of length k. Watch it run step by step, then write your own pseudocode and get it checked by AI.
- LeetCode 643
- Easy
- 2 approaches
Sign in with Google or GitHub and you land straight on this page. DSA comes with the all labs plan and every ChaiCode batch.
Sliding WindowLeetCode 643
Easy
From the first idea to the best one
- 01 Brute force · recompute each window O(n·K)O(1) space
- 02 Optimized · sliding window O(n)O(1) space
What you will learn
- How to read Max Sum Subarray of Size K and spot the sliding window pattern in it
- Brute force · recompute each window: O(n·K) time, O(1) space
- Optimized · sliding window: O(n) time, O(1) space
- The pseudocode for each approach, its line lit as the animation runs
- Practice: write your own pseudocode and get it checked
More Sliding Window
- Max Sum of Distinct Subarrays, Size KLC 2461 · Medium
- Max Points From CardsLC 1423 · Medium
- Variable-Size WindowConcept
- Longest Substring Without RepeatsLC 3 · Medium
- Longest Repeating Character ReplacementLC 424 · Medium
- Minimum Window SubstringLC 76 · Hard
- Permutation in StringLC 567 · Medium
- Sliding Window MaximumLC 239 · Hard
See Max Sum Subarray of Size K run, step by step
Sign in and this page opens on the animation, with all 8 Sliding Window problems beside it.
DSA comes with the all labs plan and every ChaiCode batch.