style: enable EmptyStatement (#5120)

checkstyle.xml

@@ -160,7 +160,7 @@
 
     <!-- Checks for common coding problems               -->
     <!-- See https://checkstyle.org/checks/coding/index.html -->
-    <!-- <module name="EmptyStatement"/> -->
+    <module name="EmptyStatement"/>
     <!-- TODO <module name="EqualsHashCode"/> -->
     <!-- TODO <module name="HiddenField"/> -->
     <module name="IllegalInstantiation"/>

src/main/java/com/thealgorithms/sorts/CircleSort.java

@@ -10,8 +10,8 @@ public class CircleSort implements SortAlgorithm {
     @Override
     public <T extends Comparable<T>> T[] sort(T[] array) {
         int n = array.length;
-        while (doSort(array, 0, n - 1))
+        while (doSort(array, 0, n - 1)) {
-            ;
+        }
         return array;
     }
 

src/test/java/com/thealgorithms/ciphers/DESTest.java

@@ -45,7 +45,6 @@ public class DESTest {
             + "001101001101001001101011001000011100000011001000011011001110101010010111101111000111"
             + "101010011010110000100100110011000001010001010110010011011010001010011111000001110011001010011";
         String expectedOutput = "Your lips are smoother than vaseline\r\n";
-        ;
 
         // when
         String plainText = des.decrypt(cipherText);