We use cookies to ensure you have the best browsing experience on our website. Please read our cookie policy for more information about how we use cookies.
  1. Prepare
  2. Tutorials
  3. 30 Days of Code
  4. Day 12: Inheritance
  5. Discussions

Day 12: Inheritance

Sort by

recency

|

1188 Discussions

|

  • ilambrev
     + 0 comments
    import java.util.Arrays;
import java.util.Scanner;

class Person {
    protected String firstName;
    protected String lastName;
    protected int idNumber;

    Person(String firstName, String lastName, int identification){
        this.firstName = firstName;
        this.lastName = lastName;
        this.idNumber = identification;
    }

    public void printPerson(){
        System.out.println("Name: " + lastName + ", " + firstName + "\nID: " + idNumber);
    }
}

class Student extends Person{
    private final int[] testScores;

    Student(String firstName, String lastName, int identification, int[] testScores) {
        super(firstName, lastName, identification);
        this.testScores = testScores;
    }

    public char calculate() {
        double avgScore = Arrays.stream(testScores).average().orElse(0.0);
        int[] thresholds = {39, 54, 69, 79, 89, 100};
        char[] letters = {'T', 'D', 'P', 'A', 'E', 'O'};

        for (int i = 0; i < thresholds.length; i++) {
            if (avgScore <= thresholds[i]) {
                return letters[i];
            }
        }

        return 'T';
    }
}

public class Solution4 {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        String firstName = scan.next();
        String lastName = scan.next();
        int id = scan.nextInt();
        int numScores = scan.nextInt();
        int[] testScores = new int[numScores];
        for(int i = 0; i < numScores; i++){
            testScores[i] = scan.nextInt();
        }
        scan.close();

        Student s = new Student(firstName, lastName, id, testScores);
        s.printPerson();
        System.out.println("Grade: " + s.calculate());
    }
}

  • suxihong07
     + 0 comments

    Python code:

    class Student(Person):

    # Write your function here

def __init__(self,firstName,lastName,idNumber,scores): 

    super().__init__(firstName,lastName,idNumber) 

    self.scores=scores

def calculate(self): 

     m=sum(self.scores)/len(self.scores) 

     if m>=90: 

        return 'O' 

     elif m>=80: 

        return 'E' 

     elif m>=70: 

        return 'A' 

     elif m>=55: 

        return "P" 

     elif m>=40: 
        return 'D' 
     else: 
        return 'T'

  • yashdeora98294
     + 0 comments

    Here is HackerRank Day 12 Inheritance solution - https://programmingoneonone.com/hackerrank-day-12-inheritance-30-days-of-code-solution.html

  • 225f7prashanth
     + 0 comments

    python code

    class Person: def init(self, firstName, lastName, idNumber): self.firstName = firstName self.lastName = lastName self.idNumber = idNumber def printPerson(self): print("Name:", self.lastName + ",", self.firstName) print("ID:", self.idNumber) class Student(Person): def init(self,firstName,lastName,idNumber,scores): super().init(firstName,lastName,idNumber) self.scores=scores def calculate(self): m=sum(self.scores)/len(self.scores) if m>=90: return 'O' elif m>=80: return 'E' elif m>=70: return 'A' elif m>=55: return "P" elif m>=40: return 'D' else: return 'T' line = input().split() firstName = line[0] lastName = line[1] idNum = line[2] numScores = int(input()) # not needed for Python scores = list( map(int, input().split()) ) s = Student(firstName, lastName, idNum, scores) s.printPerson() print("Grade:", s.calculate())

  • kgouraw
     + 0 comments

    Given code has compliation error C#:

    Solution.cs(91,21): error CS0019: Operator '+' cannot be applied to operands of type 'string' and 'void'

    Please fix it, we cannot edit these code. thanks!