Sliding Window Sum

Code

#include <stdio.h>

void sliding_window_sum(int arr[], int n, int k) {
    // Your logic here
    int sum=0;

    for(int i =0;i<k;i++){
        sum += arr[i];
    }

    printf("%d",sum);

    for(int i=1;i<=n-k;i++){
        sum= sum-arr[i-1] + arr[i+k-1];
        printf(" %d",sum);
    }

    /*for(int i =0;i<k;i++){
        //Rotate right the array by one position
        int end = arr[n-1];
        for(int j=n-1;j>0;j--){
            arr[j] = arr[j-1];
        }
        arr[0] = end;
        sum+=arr[n-1];
        printf("%d ",sum);
    }*/
    
}

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