java - 循环数组以存储使用前一个元素的值

Question

我正在尝试循环一个数组，以便它将根据方程存储一个数字。方程中使用下一个元素的位置。 (抱歉，如果这不能很好地解释它)但这里有一个例子。 A=10-1，B=A-1，C=B-1。希望这能澄清一点。

 BufferedReader br = new BufferedReader
                       (new InputStreamReader(System.in));
    int tryAgain =1;
    double[]arrayYear = new double[41];
    System.out.println("DECLINING ATTENDANCE");
    System.out.println("=====================");
    System.out.println("Attendance has been decreasing steadily at weekly religious services from\n1985. This program will dislpay the percentage of the Canadian population that\nattends a weekly religious service, from any year from 1985-2025.");
    for (int i = 0; i <=40; i ++){
        arrayYear[i] = 30-0.45;}

Answer 1

arrayYear[i] = 30 - 0.45 * i;

或者，为了更准确:

arrayYear[i] = 30 - 45 * i / 100.0;