Java Sort | HackerRank Programming Solutions | HackerRank Java Solutions

Hello Programmers/Coders, Today we are going to share solutions of Programming problems of HackerRank of Programming Language Java . At Each Problem with Successful submission with all Test Cases Passed, you will get an score or marks. And after solving maximum problems, you will be getting stars. This will highlight your profile to the recruiters.

In this post, you will find the solution for Java Sort-HackerRank Problem. We are providing the correct and tested solutions of coding problems present on HackerRank. If you are not able to solve any problem, then you can take help from our Blog/website.

Use โ€œCtrl+Fโ€ To Find Any Questions Answer. & For Mobile User, You Just Need To Click On Three dots In Your Browser & You Will Get A โ€œFindโ€ Option There. Use These Option to Get Any Random Questions Answer.

Introduction To Java

JAVA was developed by James Gosling at Sun Microsystems Inc in the year 1991, later acquired by Oracle Corporation. It is a simple programming language. Java makes writing, compiling, and debugging programming easy. It helps to create reusable code and modular programs.

Java is a class-based, object-oriented programming language and is designed to have as few implementation dependencies as possible. A general-purpose programming language made for developers to write once run anywhere that is compiled Java code can run on all platforms that support Java. Java applications are compiled to byte code that can run on any Java Virtual Machine. The syntax of Java is similar to c/c++.

Link for the ProblemJava Sort- Hacker Rank Solution

Java Sort- Hacker Rank Solution

Problem :

You are given a list of student information: ID, FirstName, and CGPA. Your task is to rearrange them according to their CGPA in decreasing order. If two student have the same CGPA, then arrange them according to their first name in alphabetical order. If those two students also have the same first name, then order them according to their ID. No two students have the same ID.

Hint: You can use comparators to sort a list of objects. See the oracle docs to learn about comparators.

Input Format

The first line of input contains an integer , representing the total number of students. The next  lines contains a list of student information in the following structure:

ID Name CGPA

Constraints

The name contains only lowercase English letters. The  contains only integer numbers without leading zeros. The CGPA will contain, at most, 2 digits after the decimal point.

Output Format

After rearranging the students according to the above rules, print the first name of each student on a separate line

Sample Input

5
33 Rumpa 3.68
85 Ashis 3.85
56 Samiha 3.75
19 Samara 3.75
22 Fahim 3.76

Sample Output

Ashis
Fahim
Samara
Samiha
Rumpa
Java Sort- Hacker Rank Solution
import java.util.*;

class 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;
    }
}

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);
        }
        Collections.sort(studentList, Comparator.comparing(Student::getCgpa).reversed().
                thenComparing(Student::getFname).thenComparing(Student::getId));
        for (Student st : studentList) {
            System.out.println(st.getFname());
        }
    }
}

38 thoughts on “Java Sort | HackerRank Programming Solutions | HackerRank Java Solutions”

  1. Hiya! Quick question that’s totally off topic. Do you know how to make your site mobile friendly? My website looks weird when viewing from my iphone 4. I’m trying to find a template or plugin that might be able to fix this issue. If you have any recommendations, please share. Appreciate it!

    Reply
  2. I havenโ€™t checked in here for some time because I thought it was getting boring, but the last few posts are great quality so I guess Iโ€™ll add you back to my daily bloglist. You deserve it my friend ๐Ÿ™‚

    Reply
  3. I discovered your blog site on google and check a few of your early posts. Continue to keep up the very good operate. I just additional up your RSS feed to my MSN News Reader. Seeking forward to reading more from you later on!โ€ฆ

    Reply
  4. Hello would you mind sharing which blog platform you’re using? I’m planning to start my own blog soon but I’m having a hard time making a decision between BlogEngine/Wordpress/B2evolution and Drupal. The reason I ask is because your design seems different then most blogs and I’m looking for something unique. P.S My apologies for being off-topic but I had to ask!

    Reply
  5. Hi , I do believe this is an excellent blog. I stumbled upon it on Yahoo , i will come back once again. Money and freedom is the best way to change, may you be rich and help other people.

    Reply
  6. I am curious to find out what blog platform you are working with? I’m experiencing some minor security issues with my latest site and I’d like to find something more safe. Do you have any recommendations?

    Reply

Leave a Comment

Ads Blocker Image Powered by Code Help Pro

Ads Blocker Detected!!!

We have detected that you are using extensions to block ads. Please support us by disabling these ads blocker๐Ÿ™.

Powered By
Best Wordpress Adblock Detecting Plugin | CHP Adblock