public class aufgabe8 {
    public static void main(String[] args) {
        int[] a = {3, 1, 4, 4, 7, 2, 3, 1};
        System.out.println(istVorhanden(7, a, 4));
    }

    static boolean istVorhanden(int x, int[] a, int i) {
        for (int j = 0; j <= i; j++) {
            if(a[i] == x) {
                return true;
            }
        }
        return false;
    }
}