Add recursive factorial implementation with tests (#7178)

* Add recursive factorial implementation with tests

* [STYLE] Apply clang-format

* Move recursive factorial to recursion package and remove duplicate

* Move recursive factorial to recursion package and remove duplicate

* Apply clang-format to factorial recursion tests

* Apply clang-format to factorial recursion tests

---------

Co-authored-by: Koushik Sai <nyamathabadkoushik@gmail.com>
Co-authored-by: Deniz Altunkapan <deniz.altunkapan@outlook.com>

src/test/java/com/thealgorithms/maths/FactorialRecursionTest.java

@@ -1,27 +0,0 @@
-package com.thealgorithms.maths;
-
-import static org.junit.jupiter.api.Assertions.assertEquals;
-import static org.junit.jupiter.api.Assertions.assertThrows;
-
-import java.util.stream.Stream;
-import org.junit.jupiter.api.Test;
-import org.junit.jupiter.params.ParameterizedTest;
-import org.junit.jupiter.params.provider.Arguments;
-import org.junit.jupiter.params.provider.MethodSource;
-
-public class FactorialRecursionTest {
-    @ParameterizedTest
-    @MethodSource("inputStream")
-    void testFactorialRecursion(long expected, int number) {
-        assertEquals(expected, FactorialRecursion.factorial(number));
-    }
-
-    private static Stream<Arguments> inputStream() {
-        return Stream.of(Arguments.of(1, 0), Arguments.of(1, 1), Arguments.of(2, 2), Arguments.of(6, 3), Arguments.of(120, 5));
-    }
-
-    @Test
-    void testThrowsForNegativeInput() {
-        assertThrows(IllegalArgumentException.class, () -> FactorialRecursion.factorial(-1));
-    }
-}