import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;

// TODO: Replace examples and use TDD by writing your own tests

class SolutionTest {
    @Test
    void testSomething() {
       Solution aaa = new Solution();
      String[] cars = {"Volvo", "BMW", "Ford", "Mazda"};
        assertEquals("actual", "actual");
        assertEquals(aaa.similarPairs(cars), 1);
    }
}