Jyusyo.java

/**
 * コメント書くの力尽きたので適当にC++版のと見比べてください♨
 * https://gist.github.com/happou31/bd87cc83b4d57d3ad233c257f6d423e3
 */

import java.io.*;
import java.util.*;
import java.nio.file.*;
import java.nio.charset.Charset;

public class Jyusyo
{
    public static void main(String[] args) throws Exception
    {
        final String filename = "KEN_ALL.CSV";
        BufferedReader file = Files.newBufferedReader(FileSystems.getDefault().getPath(filename), Charset.forName("Shift-JIS"));

        List<Addr> addrs = new ArrayList<>();
        StopWatch stopWatch = new StopWatch();

        System.out.print(filename + "...");
        stopWatch.Start();
        String line;
        while((line = file.readLine()) != null)
        {
            line = line.replaceAll("\"", "");
            String[] splited = line.split(",");
            String number = splited[2];
            StringBuilder addr = new StringBuilder();
            Arrays.asList(splited).subList(6, 9).forEach(s -> addr.append(s));

            addrs.add(new Addr(number, addr.toString()));
        }
        stopWatch.Stop();

        System.out.println(addrs.size() + "lines loaded.");
        System.out.println("time:" + (stopWatch.GetDuration()) + "ms");

        BufferedReader in = new BufferedReader(new InputStreamReader(System.in));

        while(true)
        {
            System.out.print("[s] search [q] quit>");
            String input = in.readLine();
            if("q".equals(input)) break;
            if("s".equals(input))
            {
                System.out.print("search number>");
                input = in.readLine();

                stopWatch.Start();
                List<Addr> finds = new ArrayList<>();
                for(Addr addr : addrs)
                {
                    if(addr.getNumber().indexOf(input) >= 0)
                    {
                        finds.add(addr);
                    }
                }
                stopWatch.Stop();
                for(Addr addr : finds)
                {
                    System.out.println( addr.getAddr());
                }
                System.out.println("time:" + stopWatch.GetDuration());
            }

        }

    }

    public static class Addr
    {
        public Addr(String number, String addr)
        {
            this.number = number;
            this.addr = addr;
        }

        private String number;
        private String addr;

        public String getAddr() { return addr; }
        public String getNumber() { return number; }
    }

    public static class StopWatch
    {
        public StopWatch(){ this.Reset(); }
        public void Start(){ start = System.currentTimeMillis(); }
        public void Stop() { end = System.currentTimeMillis(); }
        public void Reset() { start = 0; end = 0; }
        public long GetDuration() { return end - start; }

        private long start;
        private long end;
    }
}