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Rooted by: La Liga Ranking
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  • Code 
    import java.util.regex.Pattern;

public class Ranking{
  public static int getPoints(String[] matches, boolean isHomeMatch) {
		int points = 0;
		if(matches.length!=10) {
			return -1;
		}
		
		for (int i = 0; i < matches.length; i++) {
			if (!Pattern.matches("^[0-9]+[-]{1}[0-9]+$", matches[i])) {
				return -1;
			}

			String[] actualMatch = matches[i].split("-");
			if (!isHomeMatch) {
				String aux = actualMatch[0];
				actualMatch[0] = actualMatch[1];
				actualMatch[1] = aux;
			}

			if (Integer.parseInt(actualMatch[0]) > Integer.parseInt(actualMatch[1])) {
				points += 3;
			} else if (Integer.parseInt(actualMatch[0]) == Integer.parseInt(actualMatch[1])) {
				points += 1;
			}
			isHomeMatch = !isHomeMatch;
		}
		return points;
	}
}
     Test Cases 
    import static org.junit.jupiter.api.Assertions.assertEquals;



import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Tag;
import org.junit.jupiter.api.Test;

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

class SolutionTest {
   String[] temporada1 = {"1-1","2-0","0-1","1-1","3-2","4-0","2-1","1-1","0-0","0-5"};
	String[] temporada2 = {"1-2","2-0","0-1","1-1","3-2","4-0","2-1","1-1","0-0","0-5"};
	String[] temporada3 = {"1-1","2-0","0-1","1-1","3-2","4-0","2-1","1-1","0-0"};
	String[] temporada4 = {"2-1","2-0","0-1","1-1","3-2","4-0","2-1","1-1","0-0","1-1"};
  String[] temporada5 = {"1-1","1-1","1-1","1-1","1-1","1-1","1-1","1-1","1-1","1-1"};
	
	@Test
	@Tag("sampleTest")
	void basicTest() {
		assertEquals(13, Ranking.getPoints(temporada1,true),"Temporada 1 casa");
		assertEquals(13, Ranking.getPoints(temporada1,false),"Temporada 1 fuera");
		assertEquals(12, Ranking.getPoints(temporada2,true),"Temporada 2 casa");
		assertEquals(15, Ranking.getPoints(temporada2,false),"Temporada 2 fuera");
		assertEquals(-1, Ranking.getPoints(temporada3,false),"Temporada 3 fuera");
		assertEquals(13, Ranking.getPoints(temporada4,true),"Temporada 4 casa");
		assertEquals(13, Ranking.getPoints(temporada4,false),"Temporada 4 fuera");
    assertEquals(10, Ranking.getPoints(temporada5,false),"Temporada 5 fuera");
	}
}
    View Run Output
  • Code
    • import java.util.regex.Pattern;
    • public class Ranking{
    • public static int getPoints(String[] matches, boolean isHomeMatch) {
    • int points = 0;
    • if(matches.length!=12) {
    • if(matches.length!=10) {
    • return -1;
    • }
    • for (int i = 0; i < matches.length; i++) {
    • if (!Pattern.matches("^[0-9]+[-]{1}[0-9]+$", matches[i])) {
    • return -1;
    • }
    • String[] actualMatch = matches[i].split("-");
    • if (!isHomeMatch) {
    • String aux = actualMatch[0];
    • actualMatch[0] = actualMatch[1];
    • actualMatch[1] = aux;
    • }
    • if (Integer.parseInt(actualMatch[0]) > Integer.parseInt(actualMatch[1])) {
    • points += 3;
    • } else if (Integer.parseInt(actualMatch[0]) == Integer.parseInt(actualMatch[1])) {
    • points += 1;
    • }
    • isHomeMatch = !isHomeMatch;
    • }
    • return points;
    • }
    • }
     Test Cases
    • import org.junit.jupiter.api.Test;
    • import static org.junit.jupiter.api.Assertions.assertEquals;
    • import org.junit.jupiter.api.BeforeEach;
    • import org.junit.jupiter.api.Tag;
    • import org.junit.jupiter.api.Test;
    • // TODO: Replace examples and use TDD by writing your own tests
    • class SolutionTest {
    • @Test
    • void testSomething() {
    • // assertEquals("expected", "actual");
    • }
    • String[] temporada1 = {"1-1","2-0","0-1","1-1","3-2","4-0","2-1","1-1","0-0","0-5"};
    • String[] temporada2 = {"1-2","2-0","0-1","1-1","3-2","4-0","2-1","1-1","0-0","0-5"};
    • String[] temporada3 = {"1-1","2-0","0-1","1-1","3-2","4-0","2-1","1-1","0-0"};
    • String[] temporada4 = {"2-1","2-0","0-1","1-1","3-2","4-0","2-1","1-1","0-0","1-1"};
    • String[] temporada5 = {"1-1","1-1","1-1","1-1","1-1","1-1","1-1","1-1","1-1","1-1"};
    • @Test
    • @Tag("sampleTest")
    • void basicTest() {
    • assertEquals(13, Ranking.getPoints(temporada1,true),"Temporada 1 casa");
    • assertEquals(13, Ranking.getPoints(temporada1,false),"Temporada 1 fuera");
    • assertEquals(12, Ranking.getPoints(temporada2,true),"Temporada 2 casa");
    • assertEquals(15, Ranking.getPoints(temporada2,false),"Temporada 2 fuera");
    • assertEquals(-1, Ranking.getPoints(temporada3,false),"Temporada 3 fuera");
    • assertEquals(13, Ranking.getPoints(temporada4,true),"Temporada 4 casa");
    • assertEquals(13, Ranking.getPoints(temporada4,false),"Temporada 4 fuera");
    • assertEquals(10, Ranking.getPoints(temporada5,false),"Temporada 5 fuera");
    • }
    • }