01: //File: NumberList.java 02: //This class will gather together in one place 03: //functions (or methods) which process lists of 04: //numbers (int or double). 05: import iostuff.*; 06: public class NumberList 07: { 08: //The following two methods calculate the average of a list 09: //of int's or double's respectively 10: public static int average (int [] a) 11: { 12: int sum=0; 13: for (int k=0; k<a.length; k++) 14: { 15: sum = sum + a [k]; 16: } 17: return sum/a.length; 18: } 19: 20: public static double average (double [] a) 21: { 22: double sum=0; 23: for (int k=0; k<a.length; k++) 24: { 25: sum = sum + a [k]; 26: } 27: return sum/a.length; 28: } 29: }