package Interviews;
/**
* ===================Question===================
* In a college, A student can be identified uniquely with combination of student's first and last name
* and in a given stream a student can enroll to one or many subjects. Finally, during evaluations students are scored for each subjects
*
* E.g. In Physics Subject(See code below) Rahul, Sidd, Monica has scored 40, 50, 30 marks each.
*
*
* We need to print the students in the descending order of their average marks across subjects.
*
* Expected output for students in code snippet should be as below:
*
* Student{firstName='Sidd', lastName='Bhatia', age=30, stream='Science', avgScore=50.0}
* Student{firstName='Neha', lastName='Jain', age=33, stream='Science', avgScore=48.0}
* Student{firstName='Vishal', lastName='Garg', age=24, stream='Commerce', avgScore=44.0}
* Student{firstName='Abhishek', lastName='Kakkar', age=22, stream='Commerce', avgScore=43.0}
* Student{firstName='Rahul', lastName='Garg', age=25, stream='Science', avgScore=43.0}
* Student{firstName='Monica', lastName='Mishra', age=26, stream='Science', avgScore=41.333333333333336}
*
* Also, please note Evaluator will give some different input to the program and code should produce expected output for the same.
* ===========================Code snippet=================================
*/
import java.util.*;
import java.util.stream.Collectors;
public class AvgMaxGrade {
static Map<String, List<Student>> subjectToStudentsMap = new HashMap();
static {
subjectToStudentsMap.put("Physics", Arrays.asList(
new Student("Rahul", "Garg", 25,"Science", 40),
new Student("Sidd", "Bhatia", 30,"Science", 50),
new Student("Monica", "Mishra", 26, "Science", 30)
));
subjectToStudentsMap.put("Chemistry", Arrays.asList(
new Student("Rahul", "Garg", 25,"Science", 46),
new Student("Neha", "Jain", 33,"Science", 48),
new Student("Monica", "Mishra", 26,"Science", 46)
));
subjectToStudentsMap.put("Maths", Arrays.asList(
new Student("Vishal", "Garg", 24,"Commerce", 44),
new Student("Abhishek", "Kakkar",22, "Commerce", 43),
new Student("Monica", "Mishra", 26,"Science", 48)
));
}
public static void main(String[] args) {
//Write your code here
}
class Student implements Comparable {
String firstName;
String lastName;
double score;
String stream;
int age;
public Student(String firstName, String lastName, int age, String stream, double score) {
this.firstName = firstName;
this.lastName = lastName;
this.score = score;
this.age = age;
this.stream = stream;
}
@Override
public int compareTo(Object o) {
Student s2 = (Student) o;
return Double.compare(s2.score, this.score);
}
@Override
public String toString() {
return "Student{" +
"firstName='" + firstName + '\'' +
", lastName='" + lastName + '\'' +
", score=" + score +
", stream='" + stream + '\'' +
", age=" + age +
'}';
}
}
