Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/utils/DateAverager.java @ 5838:5aa05a7a34b7

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Rename modules to more fitting names.
author Sascha L. Teichmann <teichmann@intevation.de>
date Thu, 25 Apr 2013 15:23:37 +0200
parents flys-artifacts/src/main/java/org/dive4elements/river/utils/DateAverager.java@bd047b71ab37
children 4897a58c8746
rev   line source
5831
bd047b71ab37 Repaired internal references
Sascha L. Teichmann <teichmann@intevation.de>
parents: 3007
diff changeset
1 package org.dive4elements.river.utils;
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2
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3 import gnu.trove.TLongArrayList;
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4
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5 import java.util.Date;
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6
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7 public class DateAverager
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8 {
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9 protected TLongArrayList dates;
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10
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11 public DateAverager() {
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12 dates = new TLongArrayList();
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13 }
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14
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15 public void add(Date date) {
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16 dates.add(date.getTime());
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17 }
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18
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19 public Date getAverage() {
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20 int N = dates.size();
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21 if (N == 0) {
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22 return null;
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23 }
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24 long min = dates.min();
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25 long sum = 0L;
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26 for (int i = 0; i < N; ++i) {
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27 sum += dates.getQuick(i) - min;
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28 }
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29 return new Date(min + (long)Math.round(sum/(double)N));
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30 }
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31
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32 public void clear() {
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33 dates.resetQuick();
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34 }
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35 }
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36 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org