Problem of the Day -- Where To Eat?

Carlos - 10 years, 8 months ago

Java code is always huge, so there's that. Pretty straightforward problem, just use the last line in the folder, or the first, to save the last place you were.

private static final List<String> places = new ArrayList();
private static final Random rng = new Random();
private static String content = "";
private static int rndN = 0;

public static void main(String[] args) {
    testCase();
}

public static void testCase() {
    pickPlace();
}

public static void pickPlace() {
    getPlaces();
    chooseNewPlace();
    placeNewContent();
    organizeFolder();
}

private static void getPlaces() {        
    BufferedReader br = null; 
try {
        String sCurrentLine;
        br = new BufferedReader(new FileReader(System.getProperty("user.dir") + "\\others\\Day25_WhereToEat.txt"));
        while ((sCurrentLine = br.readLine()) != null) {
            places.add(sCurrentLine);
        }
    } catch (IOException e) {
    } finally {
        try {
            if (br != null) {
                br.close();
            }
        } catch (IOException ex) {}
    }
}

private static void chooseNewPlace() {
    rndN = rng.nextInt(places.size());
    while(places.get(rndN).equals(places.get(places.size() - 1))) {
        rndN = rng.nextInt(places.size() - 1);
    }

    System.out.println("Place chosen was: " + places.get(rndN));        
    for(int i=0; i<places.size() - 1; i++) {
        content += places.get(i) + "\n";
    }  

    content += places.get(rndN);
}

private static void placeNewContent() {        
    try {
        File file = new File(System.getProperty("user.dir") + "\\others\\tmp.txt");
        if (!file.exists()) {
            file.createNewFile();
        }

        FileWriter fw = new FileWriter(file.getAbsoluteFile());
        BufferedWriter bw = new BufferedWriter(fw);
        bw.write(content);
        bw.close();
    } catch (IOException e) {}
}

private static void organizeFolder() {       
    File file = new File(System.getProperty("user.dir") + "\\others\\Day25_WhereToEat.txt");
    file.delete();

    File file1 = new File(System.getProperty("user.dir") + "\\others\\tmp.txt");
    File file2 = new File(System.getProperty("user.dir") + "\\others\\Day25_WhereToEat.txt");
    file1.renameTo(file2);
}

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Carlos - 10 years, 8 months ago

The method pickPlace() is actually wrong, since i'm going for static variables, it should clear whatever was remaining on the other variables

public static void pickPlace() {
    for(int i=0; i<places.size(); i++) {
        places.remove(i);
    }
    rng = new Random();
    content = "";
    rndN = 0;

    getPlaces();
    chooseNewPlace();
    placeNewContent();
    organizeFolder();
}

Also, the file should look somehting like this for this solution (they have '/n's): There; The other one; Everywhere; Xing Xong; Kunt Pao; Lagostas; Doritos; The other one;

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Jt - 10 years, 8 months ago

C#, also I learned that I don't know how to spell restaurant.

namespace ProblemOtd20140408
{
  using System;
  using System.Collections.Generic;
  using System.IO;

  class Program
  {
    static void Main(string[] args)
    {
      string fileLocation;
      if (args.Length == 0)
      {
        Console.WriteLine("You must specify a file with your restaurant choices.");
        fileLocation = Console.ReadLine();
      }
      else
      {
        fileLocation = args[0];
      }

      FileInfo fileInfo = new FileInfo(fileLocation);

      if (!fileInfo.Exists)
      {
        Console.WriteLine("The file you specified does not exist.");
      }
      else
      {
        List<Restaurant> choices = GetChoices(fileInfo);
        if (choices.Count == 0)
        {
          Console.WriteLine("The file you specified does not contain any restaurants.");
        }
        else
        {
          Restaurant randomRestaurant = GetRandomRestaurant(choices);
          while (randomRestaurant.AteAtLastTime)
          { // If we ate at the chosen restaurant last time get another random choice
            randomRestaurant = GetRandomRestaurant(choices);
          }

          Console.WriteLine("You should eat at " + randomRestaurant.Name);
          WriteResults(fileInfo, choices, randomRestaurant);
        }
      }

      Console.WriteLine("Finished, press enter to exit");
      Console.ReadLine();
    }

    private static List<Restaurant> GetChoices(FileInfo file)
    {
      List<Restaurant> choices = new List<Restaurant>();
      StreamReader streamReader = new StreamReader(file.FullName);
      while (!streamReader.EndOfStream)
      {
        string choice = streamReader.ReadLine();
        choices.Add(choice.EndsWith("*") ? new Restaurant(choice.Substring(0, choice.Length - 1), true) : new Restaurant(choice));
      }
      streamReader.Close();

      return choices;
    }

    private static Restaurant GetRandomRestaurant(List<Restaurant> choices)
    {
      Random random = new Random();
      return choices[random.Next(0, choices.Count)];
    }

    private static void WriteResults(FileInfo file, List<Restaurant> choices, Restaurant chosenRestaurant)
    {
      StreamWriter streamWriter = new StreamWriter(file.FullName);
      foreach (Restaurant choice in choices)
      {
        streamWriter.WriteLine(choice.Name + (choice == chosenRestaurant ? "*" : ""));
      }
      streamWriter.Flush();
      streamWriter.Close();
    }

    private class Restaurant
    {
      public Restaurant(string name)
      {
        this.Name = name;
        this.AteAtLastTime = false;
      }

      public Restaurant(string name, bool ateAtLastTime)
      {
        this.Name = name;
        this.AteAtLastTime = ateAtLastTime;
      }

      public string Name { get; private set; }
      public bool AteAtLastTime { get; private set; }
    }
  }
}

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Mre64 - 10 years, 6 months ago

I cannot spell "definitely" without spell check for the life of me. No idea why its such a hard word for me...

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Hueho - 10 years, 8 months ago

Over-engineering to the max (Ruby)

require 'yaml'
require 'optparse'

$EATS_FILE = 'eats.yml'

class Eats

  class NoPlaceError < RuntimeError
    def initialize
      super "There is no place to eat yet!"
    end
  end

  def initialize
    dump = YAML.load_file($EATS_FILE)
    @places = dump[:places]
    @last = dump[:last]
  end

  def add_place(place)
    @places << place
  end

  def remove_place(place)
    @places.delete place
  end

  def choose_place
    if @places.empty?
      raise NoPlaceError.new
    end

    if @places.size == 1
      return @places.to_a.first
    end

    loop do
      if (it = @places.sample) != @last
        return (@last = it)
      end
    end
  end

  def to_h
    { places: @places, last: @last }
  end

  def save
    File.open($EATS_FILE, 'w') do |f|
      YAML.dump self.to_h, f
    end
  end

end

module App
  module_function

  CLEAN_HASH = { places: [], last: nil }

  def init
    File.open($EATS_FILE, 'w') do |f|
      YAML.dump CLEAN_HASH, f
    end
  end

  def get_eat
    begin
      store = Eats.new
      place = store.choose_place
      store.save
      puts "Today you eat at #{place}!"
    rescue Eats::NoPlaceError => e
      puts e.message
    end
  end

  def add_eat(place)
    store = Eats.new
    store.add_place place
    store.save
  end

  def remove_eat(place)
    store = Eats.new
    store.remove_place place
    store.save
  end

  def main
    App.init unless File.exists? $EATS_FILE

    if ARGV.empty?
      App.get_eat
      exit
    end

    OptionParser.new do |opts|
      opts.banner = 'Usage: eats.rb [options]'

      opts.on '--add PLACE', 'Adds a new place to eat' do |place|
        App.add_eat place
        exit
      end

      opts.on '--remove PLACE', 'Removes a place from the eats list' do |place|
        App.remove_eat place
        exit
      end

      opts.on '--get', 'Shows where to eat today' do
        App.get_eat
        exit
      end

      opts.on '--clean', 'Cleans eats file' do
        App.init
        exit
      end

      opts.on_tail '--help', 'Shows this help' do
        puts opts
        exit
      end

    end.parse!

  end
end

App.main

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Pegleg - 10 years, 8 months ago

Simple text file input/output seperated by whitespace, I.E Ruby Tuesdays 0 Chipotle 1

import random import os import sys dictz = {} if os.stat('res.txt').st_size==0: print 'abort! file is empty' sys.exit() file = open('res.txt', 'r') for line in file: temp = line.split() dictz[temp[0]] = int(temp[1]) file.close() choice = random.choice(dictz.keys()) while dictz[choice] !=0: choice = random.choice(dictz.keys()) print 'We choose', choice, '!' file = open('res.txt', 'w') dictz[choice] = 1 for k,v in dictz.items(): if v == 1 and k != choice: v = 0 file.write(k + ' ' + str(v)+ '\n')

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Pegleg - 10 years, 8 months ago

My apologizes vim copy and paste... How do I clean up the formatting :-X also this was in Python

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Max Burstein - 10 years, 8 months ago

The site uses github flavored markdown so you can just post your code like this https://help.github.com/articles/github-flavored-markdown#fenced-code-blocks

The preview comment button will also allow you to see how it will be formatted before you post.

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Pegleg - 10 years, 8 months ago

import random
import os
import sys
dictz = {}
if os.stat('res.txt').st_size==0:
        print 'abort! file is empty'
        sys.exit()
file = open('res.txt', 'r')
for line in file:
        temp = line.split()
        dictz[temp[0]] = int(temp[1])
file.close()
choice = random.choice(dictz.keys())
while dictz[choice] !=0:
        choice = random.choice(dictz.keys())
print 'We choose', choice, '!'
file = open('res.txt', 'w')
dictz[choice] = 1
for k,v in dictz.items():
        if v == 1 and k != choice:
                v = 0
        file.write(k + ' ' + str(v)+ '\n')

FIXED, bahaha thanks! I'll be better next time

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Walker Crouse - 10 years, 8 months ago

So here's something a bit different. I built this Java program with a Java wrapper around Google Places API that I wrote a few months ago.

It picks takes a zip-code, radius (m), and max and min price to select restaurants and then picks a random one from that. Every time one is picked it is put in a text file and compared to make sure two places cannot be picked multiple times in a row.

package me.windwaker.potd;

import me.windwaker.places.GooglePlaces;
import me.windwaker.places.Place;
import org.apache.commons.io.IOUtils;
import org.apache.http.HttpException;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.json.JSONObject;

import java.io.*;
import java.net.URISyntaxException;
import java.util.List;
import java.util.Random;
import java.util.Scanner;

import static me.windwaker.places.GooglePlaces.MAXIMUM_RESULTS;
import static me.windwaker.places.GooglePlaces.Param;

public class WhereToEat {
    private static final String API_KEY = "********";

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        // initialize client
        GooglePlaces client = new GooglePlaces(API_KEY);
        client.setSensorEnabled(false);

        while (true) {
            // get zip code
            System.out.print("Zip code: ");
            String zip = scanner.next();

            // get lat lng of zip
            double lat = 0, lng = 0;
            try {
                String url = String.format("https://maps.googleapis.com/maps/api/geocode/json?components=postal_code:%s" +
                        "&sensor=false&key=%s", zip, API_KEY);
                HttpGet get = new HttpGet(url);
                String rawJson = readString(client.getHttpClient().execute(get));
                JSONObject json = new JSONObject(rawJson).getJSONArray("results").getJSONObject(0).getJSONObject("geometry")
                        .getJSONObject("location");
                lat = json.getDouble("lat");
                lng = json.getDouble("lng");
            } catch (URISyntaxException | IOException | HttpException e) {
                e.printStackTrace();
            }
            System.out.printf("Latitude/Longitude: %f, %f\n", lat, lng);

            // input
            System.out.print("Radius (m): ");
            double radius = scanner.nextDouble();
            System.out.print("Minimum price (?/4): ");
            int minPrice = scanner.nextInt();
            System.out.print("Maximum price (?/4): ");
            int maxPrice = scanner.nextInt();

            // get nearby places
            List<Place> places =
                    client.getNearbyPlaces(lat, lng, radius, MAXIMUM_RESULTS, Param.name("types").value("restaurant"),
                            Param.name("minprice").value(minPrice), Param.name("maxprice").value(maxPrice));

            if (places.isEmpty()) {
                System.out.println("No places found.");
                break;
            }

            Random random = new Random();
            Place place = places.get(random.nextInt(places.size()));

            // dont pick a place twice
            try {
                Scanner fs = new Scanner(new FileReader("last.place"));
                if (fs.hasNext()) {
                    String id = fs.next();
                    while (id.equals(place.getId())) {
                        place = places.get(random.nextInt(places.size()));
                    }
                }
                fs.close();
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            }

            // print the details
            place = place.getDetails();
            System.out.println("\nYou should eat at: " + place.getName());
            System.out.println("Address: " + place.getAddress());
            System.out.println("Phone #: " + place.getPhoneNumber());
            System.out.println("Rating: " + place.getRating() + "/5");
            System.out.println("Price: " + place.getPrice());

            // write the id to disk
            try {
                PrintWriter writer = new PrintWriter(new FileWriter("last.place"));
                writer.println(place.getId());
                writer.flush();
                writer.close();
            } catch (IOException e) {
                e.printStackTrace();
            }

            boolean end = false;
            while (true) {
                System.out.print("\nTry again? (y/n): ");
                String next = scanner.next();
                if (next.equalsIgnoreCase("y")) {
                    break;
                } else if (next.equalsIgnoreCase("n")) {
                    end = true;
                    break;
                }
            }

            if (end) {
                break;
            }
        }
        scanner.close();
    }

    private static String readString(HttpResponse response) throws IOException {
        return IOUtils.toString(response.getEntity().getContent());
    }
}

Sample Output:

Zip code: 12345
Latitude/Longitude: 42.814001, -73.981458
Radius (m): 10000
Minimum price (?/4): 0
Maximum price (?/4): 4

You should eat at: The Bier Abbey
Address: 613 Union St, Schenectady, NY, United States
Phone #: (518) 388-8597
Rating: 4.3/5
Price: NONE

Try again? (y/n): y
Zip code: 12345
Latitude/Longitude: 42.814001, -73.981458
Radius (m): 2345
Minimum price (?/4): 2
Maximum price (?/4): 3

You should eat at: Greek Island
Address: 93 W Campbell Rd, Schenectady, NY, United States
Phone #: (518) 372-3717
Rating: -1.0/5
Price: MODERATE

Try again? (y/n): y
Zip code: 12345
Latitude/Longitude: 42.814001, -73.981458
Radius (m): 6000
Minimum price (?/4): 4
Maximum price (?/4): 4
No places found.

Process finished with exit code 0

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Mre64 - 10 years, 6 months ago

BRILLIANT WORK !

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Karl T - 10 years, 8 months ago

This took me about 4 hours to make (no regrets!) and I'm pretty proud of the result (even if it's way more complicated than it needs to be).

Stores the list in a text file and stores the last-eaten-at place in a separate text file to avoid having to re-write the potentially long list each time (though this could be stored to registry if really needed).

Has the ability to get a true random number from random.org! :D

Feedback very much requested!

using System;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Windows.Forms;

namespace WhereToEat
{
    internal class Program
    {
        private static void Main()
        {
            try
            {
                string strLocationListFile = Application.StartupPath + "\\WhereToEat-List.txt";

                List<string> listLocations = new List<string>();

                if (!File.Exists(strLocationListFile))
                {
                    string[] strNewList = { "Moobies", "Burger Shot", "Jackrabbit Slims",
                                          "The Restaurant at the End of Universe", "The Krusty Krab",
                                         "Mos Eisley Cantina Bar", "Guadalajara Brown Drip Gourmet Coffee" };

                    listLocations.AddRange(strNewList);

                    File.WriteAllLines(strLocationListFile, strNewList); //Make the default file
                }
                else
                {
                    listLocations.AddRange(File.ReadAllLines(strLocationListFile)); //Pull all locations from file
                }

                string strLastAteFile = Application.StartupPath + "\\WhereToEat-Last.txt";
                string strLastAte = "";

                if (File.Exists(strLastAteFile))
                {
                    strLastAte = File.ReadAllText(strLastAteFile); //Get the last location from the file

                    if (!string.IsNullOrEmpty(strLastAte) && listLocations.Contains(strLastAte))
                    {
                        listLocations.Remove(strLastAte); //We don't want this to be on the list
                    }
                }

                int intRandomIndex;
                string strRandomLocation;

            Loop: //When they choose no, ask again with next random item

                if (listLocations.Count < 1) //Once they've depleted the list
                {
                    Console.Clear();

                    Console.WriteLine("You're being too picky! There are no more items on the list to choose from!");
                    Console.WriteLine();
                    Console.WriteLine("Press any key to open up the file and add more locations, or hit escape if you're too lazy.");

                    if (Console.ReadKey(true).Key != ConsoleKey.Escape)
                    {
                        System.Diagnostics.Process.Start(strLocationListFile); //Open the file
                    }

                    return;
                }
                else if (listLocations.Count == 1) //No need to do a random value for 0 - 0 if there's only one item xD
                {
                    intRandomIndex = 0;
                }
                else
                {
                    intRandomIndex = GetRandomNumber(listLocations.Count, true); //True: computer will pull "true" random number from internet

                    if (intRandomIndex < 0)
                    {
                        Console.WriteLine("An error occurred."); //Oh no!
                        Console.WriteLine();
                        Console.WriteLine("Press any key to exit.");

                        Console.ReadKey(true);

                        return;
                    }
                }

                strRandomLocation = listLocations[intRandomIndex]; //Set the randomly chosen location

            AskAgain: //In case they press a key that's not N or Y

                Console.Clear();

                if (!string.IsNullOrEmpty(strLastAte)) //If we've eaten somewhere before...
                {
                    Console.WriteLine("You ate at " + strLastAte + " last time, so you're going to live a little" +
                        " and eat somewhere else today.");
                    Console.WriteLine();
                }

                if (listLocations.Count == 1)
                {
                    Console.WriteLine("This is your last choice!");
                    Console.WriteLine();
                }

                Console.WriteLine("Would you like to eat at " + strRandomLocation + "? [ Y / N ]");

                switch (Console.ReadKey(true).Key)
                {
                    case ConsoleKey.N:
                        listLocations.Remove(strRandomLocation);

                        goto Loop; //Restart process

                    case ConsoleKey.Y:
                        break;

                    default:
                        goto AskAgain; //We don't care about this
                }

                File.WriteAllText(strLastAteFile, strRandomLocation); //Set the last place eaten at

                Console.Clear();

                Console.WriteLine("Congratulations, you chose to eat at " + strRandomLocation + "!");
                Console.WriteLine();
                Console.WriteLine("Press any key to exit and go eat!");
            }
            catch (Exception ex)
            {
                Console.WriteLine("Error: " + ex.ToString());
                Console.WriteLine("Press any key to exit.");
            }

            Console.ReadKey(true);
        }

        /// <summary>
        /// Returns a random number (optionally from http://random.org)
        /// </summary>
        /// <param name="intListCount">The size of the list</param>
        /// <param name="bTrueRandom">Whether or not to retrieve number from internet</param>
        /// <returns>Random number</returns>
        private static int GetRandomNumber(int intListCount, bool bTrueRandom = false)
        {
            Console.Clear();

            Console.WriteLine("Getting random location" + (bTrueRandom ? " from the internet" : "") + "...");

            int intRandomIndex = -1; //Set to -1 in case of errors

            if (bTrueRandom)
            {
                try
                {
                    //Format: http://www.random.org/integers/?num=1&min=0&max=1&col=1&base=10&format=plain&rnd=new

                    string sURL = "";
                    sURL += "http://www.random.org/integers/?num=1&min=0&";
                    sURL += "max=" + (intListCount - 1) + "&";
                    sURL += "col=1&base=10&format=plain&rnd=new";

                    WebRequest wrGETURL = WebRequest.Create(sURL); //We could use WebClient, but this is more compatible

                    wrGETURL.Method = "GET";

                    using (WebResponse response = wrGETURL.GetResponse())
                    using (StreamReader reader = new StreamReader(response.GetResponseStream()))
                    {
                        string strResponse = reader.ReadLine();

                        if (string.IsNullOrEmpty(strResponse))
                        {
                            throw new NullReferenceException("Response from random.org was empty.");
                        }

                        intRandomIndex = int.Parse(strResponse.Trim());
                    }

                    //Sleep for two reasons: so they have time to read the text and so they can't hit no too fast (server no gusta)
                    System.Threading.Thread.Sleep(1000);
                }
                catch (Exception ex)
                {
                    Console.WriteLine("Error: " + ex.ToString());
                }
            }
            else
            {
                Random randomNumber = new Random(Environment.TickCount); //Pseudo-random number

                intRandomIndex = randomNumber.Next(0, intListCount - 1);
            }

            return intRandomIndex;
        }
    }
}

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Mre64 - 10 years, 6 months ago

/* Mre64 6/9/14

"Facts are stupid things"
    -Ronald Reagan, Former U.S. President

*/

import java.util.Random; import java.io.*;

public class FoodPicker {

public static void main(String[] args) throws IOException {

    //food item array
    String[] foodList = {"burger","cheese","eggs","bread","banana","tofu","pho","more pho"};

    //create random number "n" to choose array location
    Random rand = new Random();
    int  n = rand.nextInt(foodList.length);

    //read file for previous food
    BufferedReader br = new BufferedReader(new FileReader("C:/thetextfile.txt"));
    StringBuilder sb = new StringBuilder();
    String read = br.readLine();

    //disallow eating at the same place twice in a row
    while(foodList[n].equals(read)){
        n = rand.nextInt(7) + 1;
    }
    //print food for the day
    System.out.println(foodPicker(foodList[n]));    
}
//food picker method
public static String foodPicker(String foodList) throws IOException{
    //write the food chosen to a text file
    try {
        String str = foodList;
        File file = new File("C:/thetextfile.txt");
        FileWriter fw = new FileWriter(file);
        fw.write(str);
        fw.close();

    //catch exception
    } catch (IOException iox) {

        System.out.println("excpetion");
    }
    return foodList;
}

}

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Problem of the Day
A new programming or logic puzzle every Mon-Fri

Where To Eat?

Comments:

Problem of the Day A new programming or logic puzzle every Mon-Fri

Where To Eat?

Comments:

Problem of the Day
A new programming or logic puzzle every Mon-Fri