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enhance RandomUtils

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This commit is contained in:
oblonski 2015-02-12 20:33:47 +01:00
parent f8f063773a
commit 2acfad31ba
1 changed files with 10 additions and 0 deletions
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10
jsprit-core/src/main/java/jsprit/core/util/RandomUtils.java
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@ -4,6 +4,7 @@ import jsprit.core.problem.job.Job;
import jsprit.core.problem.solution.route.VehicleRoute;
import java.util.Collection;
import java.util.List;
import java.util.Random;
/**
@ -19,6 +20,10 @@ public class RandomUtils {
return nextItem(jobs,random);
}
public static Job nextJob(List<Job> jobs, Random random){
return nextItem(jobs,random);
}
public static <T> T nextItem(Collection<T> items, Random random){
int randomIndex = random.nextInt(items.size());
int count = 0;
@ -29,4 +34,9 @@ public class RandomUtils {
return null;
}
public static <T> T nextItem(List<T> items, Random random){
int randomIndex = random.nextInt(items.size());
return items.get(randomIndex);
}
}