Sliding Window Sum

Code

#include <stdio.h>

void sliding_window_sum(int arr[], int n, int k) {
    // Your logic here
    int total = 0;
    for (int i = 0; i < n - k + 1; i++) {
        total = 0;

        for(int j = i; j < i + k; j++) {
            total += arr[j];
        }

        printf("%d ", total);
    }
}

int main() {
    int n, k, arr[100];
    scanf("%d %d", &n, &k);
    for (int i = 0; i < n; i++) scanf("%d", &arr[i]);

    sliding_window_sum(arr, n, k);
    return 0;
}

Solving Approach

Nested For loop

This pattern is widely used in:

• ADC moving average

• Filtering

• Rolling stats in sensors and data logs