TotalPoints.java

//8th kyu
//Our football team has finished the championship.
//Our team's match results are recorded in a collection of strings. 
//Each match is represented by a string in the format "x:y", where x is our team's score and y is our opponents score.
//Ex: For example: ["3:1", "2:2", "0:1", ...]
//Rule 1: if x > y: 3 points (win)
//Rule 2: if x < y: 0 points (loss)
//Rule 3: if x = y: 1 point (tie)
//write method that takes this collection and returns the number of points our team (x) got in the championship by the rules given above.
public class TotalPoints {
  
    public static int points(String[] games) {
      //implement me
      int totalP = 0; // Initialize total points accumulator

      for (String game : games) {
        String[] scores = game.split(":"); // Split the game string into home and away scores
        int x = Integer.parseInt(scores[0]); // Convert home score to integer
        int y = Integer.parseInt(scores[1]); // Convert away score to integer

        // Validate score ranges
        if (x < 0 || x > 4 || y < 0 || y > 4) {
              throw new IllegalArgumentException("Scores must be between 0 and 4");
        }

        // Calculate points based on the game result
        if (x > y) {
          totalP += 3; // Win
        } 
        else if (x < y) {
          totalP += 0; // Loss (implicitly, could be omitted)
        } 
        else {
          totalP += 1; // Tie
        }
        }
        return totalP; 
      }
      public static void main(String[] args){
        System.out.println(points(new String[]{"3:1", "2:2", "0:1"}));
      }
}