package android.telecom;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
public abstract class TimedEvent<T> {
public abstract long getTime();
public abstract T getKey();
public static <T> Map<T, Double> averageTimings(Collection<? extends TimedEvent<T>> events) {
HashMap<T, Integer> counts = new HashMap<>();
HashMap<T, Double> result = new HashMap<>();
for (TimedEvent<T> entry : events) {
if (counts.containsKey(entry.getKey())) {
counts.put(entry.getKey(), counts.get(entry.getKey()) + 1);
result.put(entry.getKey(), result.get(entry.getKey()) + entry.getTime());
} else {
counts.put(entry.getKey(), 1);
result.put(entry.getKey(), (double) entry.getTime());
}
}
for (Map.Entry<T, Double> entry : result.entrySet()) {
result.put(entry.getKey(), entry.getValue() / counts.get(entry.getKey()));
}
return result;
}
}