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import java.util.*; class Student implements Comparable<Student>{ private int id; private String fname; private double cgpa; public Student(int id, String fname, double cgpa) { super(); this.id = id; this.fname = fname; this.cgpa = cgpa; } public int getId() { return id; } public String getFname() { return fname; } public double getCgpa() { return cgpa; } //============ code writen here=============== public int compareTo(Student s){ if(this.getCgpa()<s.getCgpa())return 1; else if(this.getCgpa()==s.getCgpa()){ if(this.getFname().compareTo(s.getFname())==0){ return this.getId()-s.getId(); }else return this.getFname().compareTo(s.getFname()); }else return -1; } } public class Solution { public static void main(String[] args){ Scanner in = new Scanner(System.in); int testCases = Integer.parseInt(in.nextLine()); List<Student> studentList = new ArrayList<Student>(); while(testCases>0){ int id = in.nextInt(); String fname = in.next(); double cgpa = in.nextDouble(); Student st = new Student(id, fname, cgpa); studentList.add(st); testCases--; } //calling sort method on studentList Collections.sort(studentList); for(Student st: studentList){ System.out.println(st.getFname()); } } }
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Java Sort
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