Sliding Window example 48
A focused DSA example for sliding window with output and explanation.
Sliding Window example 48
lesson.jsjavascript
1
2
3
4
5
6
7
8
9
javascript9 linesWrap
Input
Terminal
SuccessReady.
Run code to see output here.
What this example teaches
Sliding Window
Output
The function returns the correct result while keeping time and space tradeoffs visible.
Line-by-line explanation
- Line 1 sets up the Sliding Window example: function maxWindowSum(values, size) {.
- Line 2 adds one required part of the working pattern: let sum = 0, best = -Infinity;.
- Line 3 adds one required part of the working pattern: values.forEach((value, index) => {.
- Line 4 adds one required part of the working pattern: sum += value;.
- Line 5 adds the decision or filter that controls the result: if (index >= size) sum -= values[index - size];.
- Line 6 adds the decision or filter that controls the result: if (index >= size - 1) best = Math.max(best, sum);.
Why this example is useful
This example is useful because it isolates sliding window without surrounding noise, so you can see the idea clearly.
Where it is used in real projects
Sliding Window appears in real DSA work when a feature needs a clear pattern that can be reviewed and changed safely.
Beginner variation
Change one label, value or condition in the Sliding Window example and run it again.
Advanced variation
Combine Sliding Window with validation, error handling or reusable structure.