sumprices.java

Java 入门书的源码

/* The recursive sum method sums the elements
 * from start to end of the array passed to it.
 */

public class SumPrices {
  public static double sum(double[] p, int start, int end) {
    if (start < end)
       return p[start] + sum(p,start+1,end);
    else return 0;
  }
  public static void main(String[] args) {
    double[] prices = {12.23, 3.68, 34.99, 8.87, 63.99};
    System.out.println("The sum is $" + sum(prices,0,prices.length));
  }
}