/*
    Array6.java
    CIS 160
    David Klick
    2004-11-01

    Sorting parallel arrays.
*/

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.StringTokenizer;

public class Array6 {
    public static void main(String[] args) throws IOException {
        BufferedReader in = new BufferedReader(new FileReader("people2.txt"));
        final int MAXSIZE = 100;
        int numRecs = 0;
        String[] names = new String[MAXSIZE];
        int[] ids = new int[MAXSIZE];

        // read records into parallel arrays
        String s;
        s = in.readLine();
        while (s != null) {
            if (numRecs < MAXSIZE) {
                names[numRecs] = processName(s);
                ids[numRecs] = processID(s);
                numRecs++;
            } else {
                System.out.println("Error: Too many records in file");
                break;
            }
            s = in.readLine();
        }
        in.close();

        // sort arrays based on ids[]
        for (int i=0; i<numRecs-1; i++) {
            for (int j=i+1; j<numRecs; j++) {
                if (ids[i] > ids[j]) {
                    int tmp = ids[i];
                    String stmp = names[i];
                    ids[i] = ids[j];
                    names[i] = names[j];
                    ids[j] = tmp;
                    names[j] = stmp;
                }
            }
        }

        // display records from arrays
        for (int i=0; i<numRecs; i++) {
            System.out.printf("%3d: %s\n", ids[i], names[i]);
        }
        System.out.println(numRecs + " records");
    }

    public static String processName(String s) {
        StringTokenizer tok = new StringTokenizer(s, ",");
        if (tok.countTokens() != 2) {
            System.out.println("Invalid number of fields in record");
            return "";
        }
        tok.nextToken();   // throw away first field
        StringBuffer sb = new StringBuffer(tok.nextToken());
        int ndx = sb.length() - 1;
        while (ndx >= 0) {
            if (sb.charAt(ndx) == '"') sb.deleteCharAt(ndx);
            ndx--;
        }
        return sb.toString().trim();
    }

    public static int processID(String s) {
        StringTokenizer tok = new StringTokenizer(s, ",");
        if (tok.countTokens() != 2) {
            System.out.println("Invalid number of fields in record");
            return -1;
        }
        return Integer.parseInt(tok.nextToken());
    }
}