Update StalinSortTest.java

Author: anant-jain01

src/test/java/com/thealgorithms/sorts/StalinSortTest.java

@@ -1,6 +1,7 @@
 package com.thealgorithms.sorts;
 
 import static org.junit.jupiter.api.Assertions.assertArrayEquals;
+
 import org.junit.jupiter.api.Test;
 
 public class StalinSortTest {