[HackerRank] Day 4: Class vs. Instance (클래스와 인스턴스)

문제

https://www.hackerrank.com/challenges/30-class-vs-instance/problem?h_r=email&unlock_token=21e78822e6f550c28b7d6cc1074ffb41018eb62a&utm_campaign=30_days_of_code_continuous&utm_medium=email&utm_source=daily_reminder

Day 4: Class vs. Instance | HackerRank

 

 

성공 코드

public class Person {
    private int age;    
  
    public Person(int initialAge) {
          if (initialAge > 0) {
              age = initialAge;
        }
        else {
            age = 0;
            System.out.println("Age is not valid, setting age to 0.");
        }
    }
 
    public void amIOld() {
          if (age < 13) {
            System.out.println("You are young.");
        }
        else if (age >= 13 && age < 18) {
            System.out.println("You are a teenager.");
        }
        else {
            System.out.println("You are old.");
        }
    }
 
    public void yearPasses() {
          age = age + 1;
    }