Interview Question for Software Engineer - New Grad at Google:

public static void slidingAvg(int[] vals, int everyN) {

        int total = 0;

        for (int i = 0; i <= vals.length; i++) {
            if (i >= everyN) {
                System.out.printf("%f\n", (double)total/(double)everyN);
                total -= vals[i-everyN];
            }
            if (i < vals.length)
                total += vals[i];
        }
    }