hackerrank/java/HackerrankJava0038.java at master · mcakar-dev/hackerrank · GitHub

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importjava.util.ArrayList;
importjava.util.List;
importjava.util.Scanner;

publicclassHackerrankJava0038 {

publicstaticvoidmain(String[] args) {
// Java Sort
// https://www.hackerrank.com/challenges/java-sort/problem?isFullScreen=true

Scannerin = newScanner(System.in);
inttestCases = Integer.parseInt(in.nextLine());

List<Student> studentList = newArrayList<Student>();
while (testCases > 0) {
intid = in.nextInt();
Stringfname = in.next();
doublecgpa = in.nextDouble();

Studentst = newStudent(id, fname, cgpa);
studentList.add(st);

testCases--;
 }

// -------------------------------------------------------------------------------------------------
// --- You need to add this lines for solution hackerrank provides all other lines for challange ---
// -------------------------------------------------------------------------------------------------
studentList.sort((firstStudent, secondStudent) -> {
if (firstStudent.getCgpa() != secondStudent.getCgpa()) {
returnDouble.compare(secondStudent.getCgpa(), firstStudent.getCgpa());
 } elseif (!firstStudent.getFname().equals(secondStudent.getFname())) {
returnfirstStudent.getFname().compareTo(secondStudent.getFname());
 } else {
returnInteger.compare(firstStudent.getId(), secondStudent.getId());
 }
 });
// -------------------------------------------------------------------------------------------------
// -------------------------------------------------------------------------------------------------
// -------------------------------------------------------------------------------------------------

for (Studentst : studentList) {
System.out.println(st.getFname());
 }

in.close();
	}

privatestaticclassStudent {
privateintid;
privateStringfname;
privatedoublecgpa;

publicStudent(intid, Stringfname, doublecgpa) {
super();
this.id = id;
this.fname = fname;
this.cgpa = cgpa;
 }

publicintgetId() {
returnid;
 }

publicStringgetFname() {
returnfname;
 }

publicdoublegetCgpa() {
returncgpa;
 }
	}

}