Mercurial > dive4elements > river
annotate artifacts/src/main/java/org/dive4elements/river/utils/DateAverager.java @ 5862:36404dc7fea0
Removed old copyright headers.
author | Sascha L. Teichmann <teichmann@intevation.de> |
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date | Sun, 28 Apr 2013 14:38:44 +0200 |
parents | 5aa05a7a34b7 |
children | 4897a58c8746 |
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Repaired internal references
Sascha L. Teichmann <teichmann@intevation.de>
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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 : |