1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/samples/composition/src-api2.0/org/apidesign/math/Arithmetica.java Thu Oct 30 21:30:10 2014 +0100
1.3 @@ -0,0 +1,30 @@
1.4 +package org.apidesign.math;
1.5 +
1.6 +/** Class to simplify arithmetical operations, improved version to compute
1.7 + * the sum for ranges.
1.8 + *
1.9 + * @author Jaroslav Tulach <jtulach@netbeans.org>
1.10 + * @version 2.0
1.11 + */
1.12 +public class Arithmetica {
1.13 + public int sumTwo(int one, int second) {
1.14 + return one + second;
1.15 + }
1.16 +
1.17 + public int sumAll(int... numbers) {
1.18 + if (numbers.length == 0) {
1.19 + return 0;
1.20 + }
1.21 + int sum = numbers[0];
1.22 + for (int i = 1; i < numbers.length; i++) {
1.23 + sum = sumTwo(sum, numbers[i]);
1.24 + }
1.25 + return sum;
1.26 + }
1.27 +
1.28 +// BEGIN: design.composition.arith2.0
1.29 + public int sumRange(int from, int to) {
1.30 + return (from + to) * (Math.abs(to - from) + 1) / 2;
1.31 + }
1.32 +// END: design.composition.arith2.0
1.33 +}