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Implemented equals and hashcode. 

git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/math/trunk@141343 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Phil Steitz 2004-06-29 02:18:22 +00:00
parent d7bc4a2d8e
commit 043e97c9fe
1 changed files with 41 additions and 2 deletions
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43
src/java/org/apache/commons/math/stat/univariate/StatisticalSummaryValues.java
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@ -16,11 +16,12 @@
package org.apache.commons.math.stat.univariate;
import java.io.Serializable;
import org.apache.commons.math.util.MathUtils;
/**
* Value object representing the results of a univariate statistical summary.
*
* @version $Revision: 1.3 $ $Date: 2004/06/23 16:26:16 $
* @version $Revision: 1.4 $ $Date: 2004/06/29 02:18:22 $
*/
public class StatisticalSummaryValues implements Serializable,
StatisticalSummary {
@ -72,7 +73,6 @@ public class StatisticalSummaryValues implements Serializable,
super();
}
/**
* @return Returns the max.
*/
@ -121,5 +121,44 @@ public class StatisticalSummaryValues implements Serializable,
public double getVariance() {
return variance;
}
/**
* Returns true iff <code>object</code> is a
* <code>StatisticalSummaryValues</code> instance and all statistics have
* the same values as this.
*
* @param object the object to test equality against.
* @return true if object equals this
*/
public boolean equals(Object object) {
if (object == this ) {
return true;
}
if (object instanceof StatisticalSummaryValues == false) {
return false;
}
StatisticalSummaryValues stat = (StatisticalSummaryValues) object;
return (MathUtils.equals(stat.getMax(), this.getMax()) &&
MathUtils.equals(stat.getMean(),this.getMean()) &&
MathUtils.equals(stat.getMin(),this.getMin()) &&
MathUtils.equals(stat.getN(), this.getN()) &&
MathUtils.equals(stat.getSum(), this.getSum()) &&
MathUtils.equals(stat.getVariance(),this.getVariance()));
}
/**
* Returns hash code based on values of statistics
*
* @return hash code
*/
public int hashCode() {
int result = 31 + MathUtils.hash(getMax());
result = result * 31 + MathUtils.hash(getMean());
result = result * 31 + MathUtils.hash(getMin());
result = result * 31 + MathUtils.hash(getN());
result = result * 31 + MathUtils.hash(getSum());
result = result * 31 + MathUtils.hash(getVariance());
return result;
}
}