This was an assignment for an advanced java course at my local community college. It creates an array from a text file that contains data about the amount of time it takes a runner to complete a half-marathon. I was then required to create a way for a user to input a runner's number and get data about their race performance printed to the console.

DemoRaceDataLog.java

/*
Kurt Kaiser
CTIM 168
07.28.2018
Homework: C10PP10
RFID Race Data Text File Log
 */

import java.io.FileNotFoundException;
import java.util.Scanner;

public class DemoRaceDataLog {

    // Demonstrating the program
    public static void main(String[] args) {
        String fileName =
                "raceTextData.txt";
        int[] runnerTimes; // = new int[3];
        String splits;
        int place; // = 0;
        String[] overallTimes; // = new String[2];
        try {
            RaceDataLog recent = new RaceDataLog(fileName);
            // User input
            System.out.print("Enter a racer's number: ");
            Scanner scan = new Scanner(System.in);
            String input = scan.nextLine();
            // Calling class methods
            runnerTimes = recent.getTimes(input);
            place = recent.getPlace(input);
            System.out.println("Place: " + place);
            splits = recent.getSplits(runnerTimes, 0);
            System.out.println("Split 1-2: " + splits);
            splits = recent.getSplits(runnerTimes, 1);
            System.out.println("Split 2-3: " + splits);
            overallTimes = recent.getOverallTimes(runnerTimes);
            System.out.println("Overall Time: " + overallTimes[0]);
            System.out.println("Overall Pace: " + overallTimes[1]);
        } catch (FileNotFoundException e) {
            System.out.println("Cannot find file " + fileName);
        }
    }
}

RaceDataLog.java

/*
Kurt Kaiser
CTIM 168
07.28.2018
Homework: C10PP10
RFID Race Data Text File Log
 */
import java.io.FileNotFoundException;
import java.io.File;
import java.util.Scanner;

public class RaceDataLog {

    private String[][] data = new String[9][];

    public String[][] getData() {
        return data;
    }

    // Constructor
    public RaceDataLog(String fileName) throws FileNotFoundException {
        Scanner inputStream = new Scanner(new File(fileName));
        String startTime = inputStream.nextLine();
        int count = 0;
        String breakUp = "[, ]";
        // Read the rest of the file line by line
        while (inputStream.hasNextLine()) {
            // Use split to create two dimensional array
            data[count] = inputStream.nextLine().split(breakUp);
            count++;
        }
        inputStream.close();
    }

    // Returns run time in seconds of requested number
    public int[] getTimes(String input) {
        int[] runnerTimes = new int[3];
        String[][] data = getData();
        int count = 0;
        int intTime;
        int place = 1;
        // Runners Place
        for (int j = 0; j < data.length; j++) {
            if (data[j][0].equals("2")) {
                if (data[j][1].equals(input)) {
                }
                place++;
            }
        }
        for (int i = 0; i < data.length; i++) {
            if (input.contentEquals(data[i][1])) {
                intTime = 3600 * Integer.parseInt(data[i][2]);
                intTime += 60 * Integer.parseInt(data[i][3]);
                intTime += Integer.parseInt(data[i][4]);
                runnerTimes[count] = intTime;
                count++;
            }
        }
        return runnerTimes;
    }

    // Returns place of runner
    public int getPlace(String input) {
        String[][] data = getData();
        int place = 1;
        // Runners Place
        for (int j = 0; j < data.length; j++) {
            if (data[j][0].equals("2")) {
                if (data[j][1].equals(input)) {
                    return place;
                }
                place++;
            }
        }
        return 0;
    }

    // Calculate runners pace between markers, output to console
    public String getSplits(int[] runnerTimes, int startSplit) {
        int dist = 1;
        if (startSplit == 0) {
            dist = 7;
        } else if (startSplit == 1) {
            dist = 6;
        } else {
            return "error";
        }
        int split = (runnerTimes[startSplit + 1] - runnerTimes[startSplit]) / dist;
        String result = getFormattedTime(split);
        return result;
    }

    public String getFormattedTime(int total){
        int[] timeArray = new int[3];
        String strTime;
        String result = "";
        timeArray[0] = total / 3600;
        timeArray[1] = (total - (timeArray[0] * 3600)) / 60;
        timeArray[2] = total - timeArray[0] * 3600 - timeArray[1] * 60;
        for (int i = 0; i < 3; i++) {
            strTime = String.valueOf(timeArray[i]);
            if (strTime.length() == 1) strTime = "0" + strTime;
            result += strTime;
            if (i < 2) result += ":";
        }
        return result;
    }

    // Calculate overall race time
    public String[] getOverallTimes(int[] runnerTimes) {
        String[] overallTimes = new String[2];
        int total = runnerTimes[2] - runnerTimes[0];
        for (int i = 0; i<2; i++) {
            overallTimes[i] = getFormattedTime(total);
            total = total / 13;
        }
        return overallTimes;
    }
}

raceTextData.txt

08 00 00
0,100,08 00 00
0,132,08 00 03
0,182,08 00 15
1,100,08 50 46
1,182,08 51 15
1,132,08 51 18
2,132,09 34 16
2,100,09 35 10
2,182,09 45 15