| author | Jaroslav Tulach <jaroslav.tulach@apidesign.org> |
| Thu, 30 Oct 2014 21:30:10 +0100 | |
| changeset 409 | 40cabcdcd2be |
| parent 210 | acf2c31e22d4 |
| permissions | -rw-r--r-- |
| jtulach@321 | 1 |
package org.apidesign.math; |
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/** Class to simplify arithmetical operations, improved version to compute |
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* the sum for ranges. |
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* |
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* @author Jaroslav Tulach <jtulach@netbeans.org> |
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* @version 2.0 |
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*/ |
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public class Arithmetica {
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public int sumTwo(int one, int second) {
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return one + second; |
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} |
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public int sumAll(int... numbers) {
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if (numbers.length == 0) {
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return 0; |
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} |
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int sum = numbers[0]; |
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for (int i = 1; i < numbers.length; i++) {
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sum = sumTwo(sum, numbers[i]); |
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} |
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return sum; |
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} |
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// BEGIN: design.composition.arith2.0 |
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public int sumRange(int from, int to) {
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return (from + to) * (Math.abs(to - from) + 1) / 2; |
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} |
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// END: design.composition.arith2.0 |
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} |