Add Base64Util with encode/decode and unit tests - add clango-format

Author: TonGonzalez

src/main/java/com/thealgorithms/conversions/Base64Util.java

@@ -9,8 +9,7 @@
  */
 public final class Base64Util {
 
-    private Base64Util() {
-    }
+    private Base64Util() {}
 
     /**
      * Encodes a given string into Base64 format.
@@ -31,7 +30,8 @@ public static String encode(String input) {
      *
      * @param base64 The Base64 encoded string.
      * @return The decoded original text.
-     * @throws IllegalArgumentException if base64 is null or not a valid Base64 string.
+     * @throws IllegalArgumentException if base64 is null or not a valid Base64
+     *     string.
      */
     public static String decode(String base64) {
         if (base64 == null) {

src/test/java/com/thealgorithms/conversions/Base64Test.java

@@ -7,7 +7,7 @@
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.CsvSource;
 
-public class Base64Test{
+public class Base64Test {
 
     @Test
     // Test encoding and decoding normal strings
@@ -41,16 +41,10 @@ public void testNullInputDecode() {
     }
 
     @ParameterizedTest
-    @CsvSource({
-            "invalid@@base64",
-            "12345$%",
-            "====",
-            "abc?def"
-    })
+    @CsvSource({"invalid@@base64", "12345$%", "====", "abc?def"})
         // Test decoding invalid Base64 strings
     void testInvalidBase64Decode(String invalidBase64) {
-        assertThrows(IllegalArgumentException.class, () -> Base64Util.decode(invalidBase64));
+        assertThrows(IllegalArgumentException.class,
+                () -> Base64Util.decode(invalidBase64));
     }
-
 }
-