his is a project I am doing on Java but I can't get it to work somehow on Eclipse. Can you fix it and tell me the output? Thank you in advance! import java.util.Scanner; class RunningLog { static class Runner { String name; int numRuns; double[] distances; double[] times; Runner(String name, int numRuns) { this.name = name; this.numRuns = numRuns; this.distances = new double[numRuns]; this.times = new double[numRuns]; } } static void quickSort(Runner[] arr, int low, int high) { if (low < high) { int pi = partition(arr, low, high); quickSort(arr, low, pi - 1); quickSort(arr, pi + 1, high); } } static int partition(Runner[] arr, int low, int high) { String pivot = arr[high].name; int i = (low - 1); for (int j = low; j < high; j++) { if (arr[j].name.compareToIgnoreCase(pivot) < 0) { i++; Runner temp = arr[i]; arr[i] = arr[j]; arr[j] = temp; } } Runner temp = arr[i + 1]; arr[i + 1] = arr[high]; arr[high] = temp; return i + 1; } public static void main(String[] args) { Scanner scanner = new Scanner(System.in); System.out.print("Enter the number of runners: "); int numRunners = scanner.nextInt(); scanner.nextLine(); Runner[] runners = new Runner[numRunners]; for (int i = 0; i < numRunners; i++) { System.out.println("\nRunner " + (i + 1)); System.out.print("Enter the name of the runner: "); String name = scanner.nextLine(); System.out.print("Enter the number of runs: "); int numRuns = scanner.nextInt(); scanner.nextLine(); runners[i] = new Runner(name, numRuns); for (int j = 0; j < numRuns; j++) { System.out.println("\nRun " + (j + 1)); System.out.print("Enter the distance in miles (e.g., 3.1): "); runners[i].distances[j] = scanner.nextDouble(); System.out.print("Enter the time in minutes (e.g., 23.9): "); runners[i].times[j] = scanner.nextDouble(); } } quickSort(runners, 0, numRunners - 1); System.out.println("\nRunner Details:"); for (Runner runner : runners) { System.out.println(runner.name + " - Average Pace: " + calculateAveragePace(runner) + " minutes/mile"); } double totalPace = 0; int totalRuns = 0; for (Runner runner : runners) { for (int j = 0; j < runner.numRuns; j++) { totalPace += calculatePace(runner.distances[j], runner.times[j]); totalRuns++; } } double averagePaceAllRuns = totalPace / totalRuns; System.out.println("\nAverage Pace of All Runs: " + averagePaceAllRuns + " minutes/mile"); System.out.println("\nTotal Number of Runners: " + numRunners); System.out.println("Total Number of Runs: " + totalRuns); scanner.close(); } private static double calculatePace(double distance, double time) { return time / distance; } private static double calculateAveragePace(Runner runner) { double totalPace = 0; for (int i = 0; i < runner.numRuns; i++) { totalPace += calculatePace(runner.distances[i], runner.times[i]); } return totalPace / runner.numRuns;

his is a project I am doing on Java but I can't get it to work somehow on Eclipse. Can you fix it and tell me the output? Thank you in advance! import java.util.Scanner; class RunningLog { static class Runner { String name; int numRuns; double[] distances; double[] times; Runner(String name, int numRuns) { this.name = name; this.numRuns = numRuns; this.distances = new double[numRuns]; this.times = new double[numRuns]; } } static void quickSort(Runner[] arr, int low, int high) { if (low < high) { int pi = partition(arr, low, high); quickSort(arr, low, pi - 1); quickSort(arr, pi + 1, high); } } static int partition(Runner[] arr, int low, int high) { String pivot = arr[high].name; int i = (low - 1); for (int j = low; j < high; j++) { if (arr[j].name.compareToIgnoreCase(pivot) < 0) { i++; Runner temp = arr[i]; arr[i] = arr[j]; arr[j] = temp; } } Runner temp = arr[i + 1]; arr[i + 1] = arr[high]; arr[high] = temp; return i + 1; } public static void main(String[] args) { Scanner scanner = new Scanner(System.in); System.out.print("Enter the number of runners: "); int numRunners = scanner.nextInt(); scanner.nextLine(); Runner[] runners = new Runner[numRunners]; for (int i = 0; i < numRunners; i++) { System.out.println("\nRunner " + (i + 1)); System.out.print("Enter the name of the runner: "); String name = scanner.nextLine(); System.out.print("Enter the number of runs: "); int numRuns = scanner.nextInt(); scanner.nextLine(); runners[i] = new Runner(name, numRuns); for (int j = 0; j < numRuns; j++) { System.out.println("\nRun " + (j + 1)); System.out.print("Enter the distance in miles (e.g., 3.1): "); runners[i].distances[j] = scanner.nextDouble(); System.out.print("Enter the time in minutes (e.g., 23.9): "); runners[i].times[j] = scanner.nextDouble(); } } quickSort(runners, 0, numRunners - 1); System.out.println("\nRunner Details:"); for (Runner runner : runners) { System.out.println(runner.name + " - Average Pace: " + calculateAveragePace(runner) + " minutes/mile"); } double totalPace = 0; int totalRuns = 0; for (Runner runner : runners) { for (int j = 0; j < runner.numRuns; j++) { totalPace += calculatePace(runner.distances[j], runner.times[j]); totalRuns++; } } double averagePaceAllRuns = totalPace / totalRuns; System.out.println("\nAverage Pace of All Runs: " + averagePaceAllRuns + " minutes/mile"); System.out.println("\nTotal Number of Runners: " + numRunners); System.out.println("Total Number of Runs: " + totalRuns); scanner.close(); } private static double calculatePace(double distance, double time) { return time / distance; } private static double calculateAveragePace(Runner runner) { double totalPace = 0; for (int i = 0; i < runner.numRuns; i++) { totalPace += calculatePace(runner.distances[i], runner.times[i]); } return totalPace / runner.numRuns;

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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This is a project I am doing on Java but I can't get it to work somehow on Eclipse. Can you fix it and tell me the output? Thank you in advance!

import java.util.Scanner;

class RunningLog

{

static class Runner

{

String name;

int numRuns;

double[] distances;

double[] times;

Runner(String name, int numRuns)

{

this.name = name;

this.numRuns = numRuns;

this.distances = new double[numRuns];

this.times = new double[numRuns];

}

static void quickSort(Runner[] arr, int low, int high)

{

if (low < high) { int pi = partition(arr, low, high);

quickSort(arr, low, pi - 1);

quickSort(arr, pi + 1, high);

}

static int partition(Runner[] arr, int low, int high)

{

String pivot = arr[high].name; int i = (low - 1);

for (int j = low; j < high; j++) { if (arr[j].name.compareToIgnoreCase(pivot) < 0)

{

i++;

Runner temp = arr[i]; arr[i] = arr[j]; arr[j] = temp;

}

} Runner temp = arr[i + 1];

arr[i + 1] = arr[high];

arr[high] = temp;

return i + 1;

}

public static void main(String[] args) {

Scanner scanner = new Scanner(System.in);

System.out.print("Enter the number of runners: ");

int numRunners = scanner.nextInt();

scanner.nextLine();

Runner[] runners = new Runner[numRunners];

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

System.out.println("\nRunner " + (i + 1));

System.out.print("Enter the name of the runner: ");

String name = scanner.nextLine();

System.out.print("Enter the number of runs: ");

int numRuns = scanner.nextInt();

scanner.nextLine();

runners[i] = new Runner(name, numRuns);

for (int j = 0; j < numRuns; j++)

{

System.out.println("\nRun " + (j + 1));

System.out.print("Enter the distance in miles (e.g., 3.1): ");

runners[i].distances[j] = scanner.nextDouble();

System.out.print("Enter the time in minutes (e.g., 23.9): ");

runners[i].times[j] = scanner.nextDouble();

}

quickSort(runners, 0, numRunners - 1);

System.out.println("\nRunner Details:");

for (Runner runner : runners)

{

System.out.println(runner.name + " - Average Pace: " + calculateAveragePace(runner) + " minutes/mile");

}

double totalPace = 0;

int totalRuns = 0; for (Runner runner : runners) { for (int j = 0; j < runner.numRuns; j++) { totalPace += calculatePace(runner.distances[j], runner.times[j]); totalRuns++;

}

double averagePaceAllRuns = totalPace / totalRuns;

System.out.println("\nAverage Pace of All Runs: " + averagePaceAllRuns + " minutes/mile");

System.out.println("\nTotal Number of Runners: " + numRunners);

System.out.println("Total Number of Runs: " + totalRuns);

scanner.close();

}

private static double calculatePace(double distance, double time)

{

return time / distance;

}

private static double calculateAveragePace(Runner runner)

{

double totalPace = 0;

for (int i = 0; i < runner.numRuns; i++)

{

totalPace += calculatePace(runner.distances[i], runner.times[i]);

}

return totalPace / runner.numRuns;

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