Day 12: Inheritance

day12.java

class Student extends Person{
  private int[] testScores;

  /*	
  *   Class Constructor
  *   
  *   @param firstName - A string denoting the Person's first name.
  *   @param lastName - A string denoting the Person's last name.
  *   @param id - An integer denoting the Person's ID number.
  *   @param scores - An array of integers denoting the Person's test scores.
  */
  public Student(String firstName, String lastName, int identification, int[] scores){
      super(firstName,lastName,identification);
      this.testScores = scores;
  }

  /*	
  *   Method Name: calculate
  *   @return A character denoting the grade.
  */
  public String calculate(){
    double sum = 0;

    for(int score : testScores) sum += score;

    double avg = sum/testScores.length;

    String [][] gradingScale = {{"90","O"},{"80","E"},{"70","A"},{"55","P"},{"40","D"}};

    for(String[] tuple:gradingScale){
      if(avg >= Integer.parseInt(tuple[0])){
        return tuple[1];
      }
    }
    return "T";
  }
  
}

Interesting solution for not using nested ifs.