Answered: Use java programing create an…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

Use java programing create an ObjectInsertionSorter class that can sort Comparable objects. Demonstrate the class in a program that sorts an array of String objects.

Expert Solution

Step 1

import java.util.*;

class Checker implements Comparator<Player>{

public int compare(Player a,Player b){

if(a.score == b.score){

return a.name.compareTo(b.name);

}

else

return b.score-a.score;

}

class Player{

String name;

int score;

Player(String name, int score){

this.name = name;

this.score = score;

}

class ObjectInsertionSorter {

public static void main(String[] args) {

Scanner scan = new Scanner(System.in);

int n = scan.nextInt();

Player[] player = new Player[n];

Checker checker = new Checker();

for(int i = 0; i < n; i++){

player[i] = new Player(scan.next(), scan.nextInt());

}

scan.close();

Arrays.sort(player, checker);

for(int i = 0; i < player.length; i++){

System.out.printf("%s %s\n", player[i].name, player[i].score);

}

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