fixbug

@@ -19,7 +19,7 @@ public class Strings {
     public static List<Integer> split(String str, String delimiter) {
         List<Integer> values = null;
         if (org.apache.commons.lang3.StringUtils.isNotEmpty(str)) {
-            values = Splitter.on(delimiter).splitToList(str).stream().map(Integer::valueOf).collect(Collectors.toList());
+            values = Splitter.on(delimiter).omitEmptyStrings().splitToList(str).stream().map(Integer::valueOf).collect(Collectors.toList());
         }
         return values;
     }