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3 changes: 2 additions & 1 deletion src/main/java/net/agkn/hll/HLL.java
Original file line numberDiff line numberDiff line change
Expand Up@@ -16,6 +16,7 @@
* limitations under the License.
*/

import java.io.Serializable;
import java.util.Arrays;

import it.unimi.dsi.fastutil.ints.Int2ByteOpenHashMap;
Expand DownExpand Up@@ -59,7 +60,7 @@
*
* @author timon
*/
public class HLL implements Cloneable {
public class HLL implements Cloneable, Serializable {
// minimum and maximum values for the log-base-2 of the number of registers
// in the HLL
public static final int MINIMUM_LOG2M_PARAM = 4;
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