Создайте приложение, которое отображает произвольный текст, соответствующий указанному регулярному выражению

Question

ОК, поэтому в духе Code-Golf я пробую здесь что-то новое: Code-Bowling .

В гольфе вы пытаетесь получить наименьшее количество баллов (наименьшее приложение, самое элегантное и т. Д.). В боулинге вы пытаетесь получить самый высокий балл. Поэтому, если вы будете следовать, цель задачи Code-Bowling - сделать самый большой, самый ублюдочный, самый сложный в обслуживании фрагмент кода, который все еще отвечает требованиям задачи. Однако нет смысла делать источник длиннее просто ради него. Должно казаться, что добавленная длина была от дизайна, а не только от отступов.

Вот этот вызов:

Напишите программу на выбранном вами языке, которая создает одну строку текстового вывода и завершается. Созданный вывод должен соответствовать этому регулярному выражению:

/^Good (Morning|Afternoon|Evening|Night)$/

Вывод может быть случайным (с использованием языков или вашей собственной реализации) или хаотичным (детерминированным, но не тривиальным).

Answer 1

/*
 * TODO: write manpage
 */

#include <assert.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#define ERROR_MAX   2048    /* arbitrary, must account for argv[0] */

#define MSG_SIZE    (5+9+1) /* +1 for newline, +1 for NUL */

#if defined(linux) || defined(BSD) && BSD > 199300L
extern char const *__progname;
# define progname __progname
#else
static char *progname;
#endif

typedef enum _Progerr {
    IO_ERR = 1,
    RND_ERR = 2
} progerr_t;

static const char GREET_START[5] = "Good";  /* XXX move to Makefile? */

static const char *TIMES_OF_DAY[5] = {
    "Morning",
    "Afternoon",
    "Evening",
    "Night",
    NULL
};

int main()
{
    char errbuf[ERROR_MAX];
    char msgbuf[MSG_SIZE];
    char *slash;
    const char **time_of_day;
    int fd, rnd;
    size_t greet_len;

#ifndef progname
    /* we want proper error messages */
    progname = argv[0];
    if ((slash = strrchr(progname, '/')) != NULL)
        progname = slash+1;
#endif

    /* get REAL randomness; can't trust rand(3).
     * avoid stdio, it's slow. */
#ifdef DEBUG
    write(STDERR_FILENO, "getting random data\n", sizeof("getting random data\n")-1);
#endif
    if ((fd = open("/dev/urandom", O_RDONLY)) == -1) {
        if ((fd = open("/dev/random", O_RDONLY)) == -1)
            rnd = rand();   /* last resort, for MSYS etc. */
    }

    if (fd >= 0 && read(fd, &rnd, sizeof(int)) != sizeof(int)) {
        close(fd);
        goto rngerr;
    }

    /* higher bits of rand() have better entropy */
    assert(sizeof(int) >= 4);   /* should be compile-time assert */
    rnd = (rnd >> 24) & 0x03;

    for (time_of_day = TIMES_OF_DAY; *time_of_day && rnd; time_of_day++, rnd--)
        ;
    if (!time_of_day)
        goto rngerr;

    sprintf(msgbuf, "%s %s", GREET_START, *time_of_day);
    greet_len = strlen(msgbuf);
    msgbuf[greet_len] = '\n';
    if (write(STDOUT_FILENO, msgbuf, greet_len+1) == -1)
        goto write_err;

    return 0;

rngerr:
    sprintf(errbuf, "%s: cannot get random data\n", progname);
    write(STDERR_FILENO, errbuf, strlen(errbuf));
    return (int)RND_ERR;

write_err:
    sprintf(errbuf, "%s: cannot write to stdout\n", progname);
    write(STDERR_FILENO, errbuf, strlen(errbuf));
    return (int)IO_ERR;
}

Answer 2

Я написал трехъязычную программу франкскорсинга, которую можно интерпретировать с помощью bash, скомпилировать с помощью gcc и интерпретировать с помощью python без изменений в коде (если интерпретировать с помощью bash, он вызывает себя как C и python для выполнения задачи).Он также использует время загрузки Google в качестве источника случайных чисел.

#if 0
"""ls" > /dev/null
echo /* >/dev/null
# Save as 'whatever.sh.c' (.sh is negotiable, but .c is a must, lest gcc will cry)
# Run with bash (i.e. bash 'whatever.sh.c')

gcc -std=c99 $0 -o /tmp/codebowling 2>/dev/null
/tmp/codebowling
/tmp/codebowling `python $0`
rm -rf /tmp/codebowling
exit;
echo */ >/dev/null
#endif

#include <stdlib.h>
#include <stdio.h>

char* strings[] = {
   "Morning\n", "Evening\n", "Afternoon\n", "Night\n"
};

int main(int argc, char* argv[]) {
 if(argc == 1) printf("Good ");
 else if(argc == 2) { 
    int what = atoi(argv[1]);
    printf(strings[what]);
 }

 return EXIT_SUCCESS;
}
#if 0
/*
"""
#*/
from urllib import urlopen
import time, math

t1 = time.time()
str = urlopen('http://www.google.com').read();
t2 = time.time()
dt = t2 - t1;
print int(100+100*math.sin(100000*dt))%4
#endif

Answer 3

Java + Spring: все интерфейсы являются инъекционными для модульного тестирования!

package stackoverflow.codebowling;

import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.ByteArrayResource;

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

public class Main {

    /*
    TODO: Add javadoc
    */

    static public final Logger logger = Logger.getLogger(Main.class.getName());

    public static void main(String[] args) throws IOException {
        ByteArrayResource byteArrayResource =
            new ByteArrayResource(spring_config_xml.getBytes());
        XmlBeanFactory beanFactory = new XmlBeanFactory(byteArrayResource);
        MessageWriter messageWriter = beanFactory.getBean("MessageWriterBean", MessageWriter.class);
        try {
            Writer writer = new PrintWriter(System.out);
            messageWriter.writeMessage(writer);
            writer.flush();
        } catch(IOException ex) {
            logger.severe(ex.getMessage());
            throw ex;
        }
    }

    /*
    Using a visitor pattern to avoid casting or case statements.
    If you see a case statement your are probably not doing real OOP
     */
    static abstract public class TimeOfDay {

        public abstract void visit(TimeOfDayVisitor visitor);

        static final class Morning extends TimeOfDay {

            @Override
            public void visit(TimeOfDayVisitor visitor) {
                visitor.morning(this);
            }
        }

        static final class Afternoon extends TimeOfDay {

            @Override
            public void visit(TimeOfDayVisitor visitor) {
                visitor.afternoon(this);
            }
        }

        static final class Evening extends TimeOfDay {

            @Override
            public void visit(TimeOfDayVisitor visitor) {
                visitor.evening(this);
            }
        }

        static final class Night extends TimeOfDay {

            @Override
            public void visit(TimeOfDayVisitor visitor) {
                visitor.night(this);
            }
        }

        static public final TimeOfDay[] ALL = {
                new Morning(),
                new Afternoon(),
                new Evening(),
                new Night()
        };

        static public interface TimeOfDayVisitor {
            public void morning(TimeOfDay timeOfDay);
            public void afternoon(TimeOfDay timeOfDay);
            public void evening(TimeOfDay timeOfDay);
            public void night(TimeOfDay timeOfDay);
        }

    }

    static public interface MessageWriter {
        void writeMessage(Writer writer) throws IOException;
    }

    static public class MessageWriterImpl implements MessageWriter {

        private TimeOfDayChooser timeOfDayChooser;

        private TimeOfDayGreetingsFormatter timeOfDayGreetingsFormatter;

        public void writeMessage(Writer writer) throws IOException {
            TimeOfDay timeOfDay = timeOfDayChooser.choose();
            writer.write(timeOfDayGreetingsFormatter.format(timeOfDay));
        }

        public void setTimeOfDayChooser(TimeOfDayChooser timeOfDayChooser) {
            this.timeOfDayChooser = timeOfDayChooser;
        }

        public void setTimeOfDayGreetingsFormatter(TimeOfDayGreetingsFormatter timeOfDayGreetingsFormatter) {
            this.timeOfDayGreetingsFormatter = timeOfDayGreetingsFormatter;
        }
    }

    static public interface TimeOfDayGreetingsFormatter {
        String format(TimeOfDay timeOfDay);
    }

    static public class TimeOfDayGreetingsFormatterImpl implements TimeOfDayGreetingsFormatter {

        public String format(TimeOfDay timeOfDay) {
            final StringBuilder builder = new StringBuilder();
            builder.append("Good ");
            timeOfDay.visit(new TimeOfDay.TimeOfDayVisitor() {
                public void morning(TimeOfDay timeOfDay) {
                    builder.append("Morning");
                }

                public void afternoon(TimeOfDay timeOfDay) {
                    builder.append("Afternoon");
                }

                public void evening(TimeOfDay timeOfDay) {
                    builder.append("Evening");
                }

                public void night(TimeOfDay timeOfDay) {
                    builder.append("Night");
                }
            });
            return builder.toString();
        }
    }

    static public interface TimeOfDayChooser {
        TimeOfDay choose();
    }

    static public class RandomTimeOfDayChooserImpl implements TimeOfDayChooser {

        // *** injected by Spring
        private RandomService randomService;

        public synchronized TimeOfDay choose() {
            int range = TimeOfDay.ALL.length;
            int index = randomService.rand(range);
            return TimeOfDay.ALL[index];
        }

        public void setRandomService(RandomService randomService) {
            this.randomService = randomService;
        }
    }

    static public class ChaoticTimeOfDayChooserImpl implements TimeOfDayChooser {

        // *** injected by Spring
        private RandomService randomService;

        // *** this is initialized in the setter for randomService
        private int currentIndex;

        public synchronized TimeOfDay choose() {
            int range = TimeOfDay.ALL.length;
            this.currentIndex = this.currentIndex + 1 + randomService.rand(range - 1);
            return TimeOfDay.ALL[this.currentIndex];
        }

        public void setRandomService(RandomService randomService) {
            this.randomService = randomService;
            int range = TimeOfDay.ALL.length;
            this.currentIndex = randomService.rand(range);
        }
    }

    static public interface RandomService {
        int rand(int range);
    }

    static public class RandomServiceImpl implements RandomService {

        // *** initialized by Spring
        private long seed;

        // *** initialized by setSeed
        private Random random;

        public int rand(int range) {
            return (int)(random.nextInt(range));
        }

        /*
        A seed of < 0 indicates a random seed. For testing, set a positive long value
        which will guarantee reproducible results.
         */
        public void setSeed(long seed) {
            this.seed = seed;
            if (seed >= 0) {
                this.random = new Random(seed);
            } else {
                this.random = new Random();
            }
        }
    }

    static public final String spring_config_xml =
        "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" +
                "<beans xmlns=\"http://www.springframework.org/schema/beans\"\n" +
                "       xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n" +
                "       xmlns:aop=\"http://www.springframework.org/schema/aop\"\n" +
                "       xsi:schemaLocation=\"http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd\">\n" +
                "   <bean id=\"MessageWriterBean\" class=\"stackoverflow.codebowling.Main.MessageWriterImpl\">\n" +
                "      <property name=\"timeOfDayChooser\" ref=\"RandomTimeOfDayChooserBean\" />\n" +
                "      <property name=\"timeOfDayGreetingsFormatter\" ref=\"TimeOfDayGreetingsFormatterBean\" />\n" +
                "   </bean>\n" +
                "   <bean id=\"RandomTimeOfDayChooserBean\" class=\"stackoverflow.codebowling.Main.RandomTimeOfDayChooserImpl\">\n" +
                "      <property name=\"randomService\" ref=\"RandomServiceBean\" />\n" +
                "   </bean>\n" +
                "   <bean id=\"ChaoticTimeOfDayChooserBean\" class=\"stackoverflow.codebowling.Main.ChaoticTimeOfDayChooserImpl\">\n" +
                "      <property name=\"randomService\" ref=\"RandomServiceBean\" />\n" +
                "   </bean>\n" +
                "   <bean id=\"RandomServiceBean\" class=\"stackoverflow.codebowling.Main.RandomServiceImpl\">\n" +
                "      <property name=\"seed\" value=\"-1\" />\n" +
                "   </bean>\n" +
                "   <bean id=\"TimeOfDayGreetingsFormatterBean\" class=\"stackoverflow.codebowling.Main.TimeOfDayGreetingsFormatterImpl\" />\n" +
                "</beans>\n";

}

Answer 4

Ладно, поехали ... СЕЙЧАС быстро отправь мне немного денег, чтобы я мог покинуть эту страну и жить на каком-то случайном тихоокеанском острове, где я построил подводные камни и спрятался в джунглях, чтобы быть в безопасностииз Крокфорда ....

// give out greeting program
rand = Math.random;
tims = Array()
timeString = "morning ,afternoon,evening ,night" // our times of day
timesCount=4 // set timesCount to 4

// shorthand for creating array dont have to type tims[...] = ... all the time
makeArray(timeString, timesCount)
greeting = null

// this saves typing
String['prototype']['getChar'] =function(big,p){
return String.fromCharCode(big!=false? this.charCodeAt(p)-32: this.charCodeAt(p)) }

function makeArray(data,max){
    ex = regeExFromStr('[a-zA-Z]+', "g")
    while(m= ex.exec(data))if(tims.length< max)tims.push(m[0])
    return tims }

function formatGreting(){
    mesage ="Good " + randm;
    msglength=0

    // get string length should be fast this way
     while(mesage[msglength])++msglength
    captialisised=""
        // check if we need to replace with upper
    for(i=0;char=mesage.charCodeAt(i-1),i <msglength; i++)

        // found this on another side on the internet
        switch(char) {
        case 32: if(char== 32)
                captialisised= captialisised + mesage.getChar(true,i)
        break;
        default: if (char!=32)
            captialisised = captialisised+mesage.getChar(false,i)
        break
        }

       // make sure there is no whitespace should work better with regex
    trimmed=regeExFromStr("([A-Za-z]+\\\s[A-Za-z]+)",'').exec(captialisised)[0]
    return trimmed }

function getTime(){ // get a time of days
    tims.cacheLength();arrayLenght= tims.cachedLength;
    randm = eval('tims[' + randomNum(arrayLenght) + "]");
    if(valid(randm))
            greeting=formatGreting()
}
function regeExFromStr(string,opt){
    return eval("/"+string+"/" +opt)  // make regex from string
}

function randomNum(max){
// random * random is more random
return Math.floor(rand() * max*rand()) }

// make sure the string correct
function valid(str) {
    valids= makeArray(tims.join('|'),timesCount)
    tims.cacheLength();cachedLenght= tims.cachedLength;
    hasValidated=false; // hasValidated
    for(i=0; i< cachedLenght;i++)
        if(!stringIsDifferent(eval("tims["+i+"]"),trimString(str)))hasValidated=true
            return istrue(hasValidated)}

// stupid js has to trim
function trimString(str) {
  l=0;
    while(str.charCodeAt(l++)!=32)
    return str.substr(0,l)
}

// found this on a side called thedailywtf.com always worked for me
function istrue(value){
bool = Boolean(value)
if(bool==true)
    return true

 else if(bool==false)
        return false

      else
            return null}

// == is broken so well just use regex
function stringIsDifferent(a,b) {
ex=regeExFromStr("^"+b+"$","i")
same=ex.test(b)
   return
      istrue(same)
}

// length is slow
Object.prototype["initcaching"]=function(){

this.cachedLength =0;}
Object.prototype['cacheLength']=function() {
with (this) {
    initcaching();
       while(this[cachedLength])
           cachedLength++   }}

getTime()

// print to brwoser
document.write(greeting)

PS: В настоящее время я пишу руководство по всем распространенным подводным камням JS, вы можете проверить его .

Answer 5

Я думаю, что это установило некоторые рекорды в WTF-iness. Это одна функция, которая компилирует удобочитаемую сборку в BrainF ***, а затем другая функция, которая ее интерпретирует.

Конечно, в читабельной сборке отсутствуют некоторые функции, поэтому есть некоторая хакерская вставка кода BF вручную. И код, как правило, полон WTF.

import java.io.BufferedInputStream;
import java.io.BufferedReader;
    import java.io.ByteArrayInputStream;
import java.io.FileReader;
    import java.io.IOException;
import java.io.InputStream;import java.io.InputStreamReader;
import java.io.Reader;
import java.io.StringReader;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Random;
import java.util.Scanner;
import java.util.Stack;
import java.util.StringTokenizer;


public class CodeBowling {
    public static void main(String[] args) throws IOException{
        //An extended version of BrainF*ck, with a command for jumping a rand(int) to the right
        //I've heard that assembly languages always run faster, so this should be really efficient!
        String readable="";
        readable+="set 0 G\n";
        readable+="set 1 o\n";
        readable+="set 2 o\n";
        readable+="set 3 d\n";
        readable+="set 4 _\n";

        readable+="set 5 M\n";
        readable+="set 9 o\n";
        readable+="set 13 r\n";
        readable+="set 17 n\n";
        readable+="set 21 i\n";
        readable+="set 25 n\n";
        readable+="set 29 g\n";

        readable+="set 6 A\n";
        readable+="set 10 f\n";
        readable+="set 14 t\n";
        readable+="set 18 e\n";
        readable+="set 22 r\n";
        readable+="set 26 n\n";
        readable+="set 30 o\n";
        readable+="set 34 o\n";
        readable+="set 38 n\n";

        readable+="set 7 E\n";
        readable+="set 11 v\n";
        readable+="set 15 e\n";
        readable+="set 19 n\n";
        readable+="set 23 i\n";
        readable+="set 27 n\n";
        readable+="set 31 g\n";

        readable+="set 8 N\n";
        readable+="set 12 i\n";
        readable+="set 16 g\n";
        readable+="set 20 h\n";
        readable+="set 24 t\n";

        //Begin execution.
        readable+="print 0\n";
        readable+="print 1\n";
        readable+="print 2\n";
        readable+="print 3\n";
        readable+="sub 4 63\n";
        readable+="print 4\n";

        //VERY IMPORTANT
        //JUMP COMMANDS PERMANTENTLY SHIFT THE MEMORY.
        //DO NOT FOLLOW THEM BY ANY OTHER COMMANDS.
        readable+="rand\n";
        readable+="rand\n";
        readable+="rand";

        String bf=compile(readable);

        //Prints out the random greeting; the assembly does not include this function.
        //A request has been filed to the other developer to add this feature to the
        //compiler ASAP.
        bf+=">>>>>[.>>>>]"; 

        execute(bf);
    }
    static void execute(String program){
        InputStream is=null;
        try {
            is = new ByteArrayInputStream(program.getBytes("UTF-8"));
        } catch (UnsupportedEncodingException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        }
        Scanner scn=new Scanner(is);
        List<Character> acceptedChars=Arrays.asList('<','>','.',',','+','-','[',']','J');
        int brack=0;
        Stack<Integer> brackStack=new Stack<Integer>();
        Map<Integer,Integer> brackMap=new HashMap<Integer,Integer>();
        int pos=0;
        StringBuilder sb=new StringBuilder();
                    scn.useDelimiter("");
            int warnings=0;
            while(scn.hasNext()){
                char nextChar=scn.next().charAt(0);
                if(acceptedChars.contains(nextChar)){
                    sb.append(nextChar);
                    if(nextChar=='['){
                        brack++;
                        brackStack.push(pos);
                    }
                    if(nextChar==']'){
                        brack--;
                        brackMap.put(pos, brackStack.peek());
                        brackMap.put(brackStack.pop(), pos);
                    }
                } else if(warnings<3){
                    System.out.println("Warning: unrecognized character '"+((nextChar=='\r'||nextChar=='\n')?"newline":nextChar)+"'");
                    warnings++;
                    if(warnings==3)
                        System.out.println("Too many warnings, suppressing output.");
                }
                pos++;
            }
        if(brack!=0){
            System.out.println("Error: unbalanced brackets.");
            System.exit(1);
        }
        char[] pgrm=sb.toString().toCharArray();

        //Begin execution
        int Codeloc=0,Memloc=0,lim=pgrm.length;
        ArrayList<Integer> mem=new ArrayList<Integer>();
        scn=new Scanner(System.in);
        scn.useDelimiter("");

        while(Codeloc<lim){
            try{
                switch(pgrm[Codeloc]){
                case '+':
                    mem.set(Memloc,mem.get(Memloc)+1);
                    break;
                case '-':
                    mem.set(Memloc,mem.get(Memloc)-1);
                    break;
                case '>':
                    Memloc++;
                    break;
                case '<':
                    Memloc--;
                    break;
                case '[':
                    if(mem.get(Memloc)==0){
                        Codeloc=brackMap.get(Codeloc);
                    } else {
                        Codeloc=Codeloc;//0 //brackStack.peek() //Codeloc++;;;
                    }
                    break;
                case ']':
                    Codeloc=brackMap.get(Codeloc)-1;
                    break;
                case '.':
                    System.out.print((char)(int)mem.get(Memloc));
                    break;
                case ',':
                    mem.set(Memloc,(int)scn.next().charAt(0));
                    break;
                case 'J':
                    java.util.Random r=new java.util.Random();
                    Memloc+=r.nextBoolean()?1:0;
                }
                Codeloc++;
            } catch (java.lang.IndexOutOfBoundsException e){
                //i++;
                //if(i>20){
                //  System.exit(1);
                //}
                mem.add(0);
            }
        }
    }
    static String compile(String readable) throws IOException{
        String program="";
        BufferedReader is=null;
        try {
            is = new BufferedReader((Reader)new StringReader(readable));
        } catch (Exception e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        }
        Stack continueLoopingWhileNotEqualToZeroLocations=new Stack();
        while(is.ready()){
            String command=is.readLine();
            try{
                int a=1/((command==null)?0:1);
            } catch (Exception e) {
                break;
            }
            StringTokenizer st=new StringTokenizer(command);
            String type=st.nextToken();
            if(type.equals("set")){ // "set 4 c" sets memory location 4 to a "c".
                Object temp=new Integer(st.nextToken());
                int location=(Integer)temp;
                for(int i=0;i<location;i++){
                    program+=">";
                }
                program+="[-]";
                temp=new Character(st.nextToken().charAt(0));
                char character=(Character)temp;
                for(char i=0;i<character;i++){
                    program+="+";
                }
                for(int i=location;i>0;i--){
                    program+="<";
                }
            } else if(type.equals("add")){ // "add 4 10" increments memory location 4 by 10.
                Object temp=new Integer(st.nextToken());
                int location=(Integer)temp;
                for(int i=0;i<location;i++){
                    program+=">";
                }
                temp=new Integer(st.nextToken());
                int diff=(Integer)temp;
                for(char i=0;i<diff;i++){
                    program+="+";
                }
                for(int i=location;i>0;i--){
                    program+="<";
                }
            } else if(type.equals("sub")){ // "sub 4 10" decrements memory location 4 by 10.
                Object temp=new Integer(st.nextToken());
                int location=(Integer)temp;
                for(int i=0;i<location;i++){
                    program+=">";
                }
                temp=new Integer(st.nextToken());
                int diff=(Integer)temp;
                for(char i=0;i<diff;i++){
                    program+="-";
                }
                for(int i=location;i>0;i--){
                    program+="<";
                }
            } else if(type.equals("addFrom")){ // "addFrom 4 5 7 9" adds the value of location 4 to locations 5, 7, and 9, and erases 4.
                Object temp=new Integer(st.nextToken());
                int location=(Integer)temp;
                for(int i=0;i<location;i++){
                    program+=">";
                }
                program+="[-";
                int a=location;
                int b;
                while(st.hasMoreTokens()){
                    b=Integer.valueOf(st.nextToken());
                    int diff=b-a;
                    if(diff>0){
                        for(int i=0;i<diff;i++){
                            program+=">";
                        }
                    } else {
                        for(int i=0;i<diff;i++){
                            program+="<";
                        }
                    }
                    program+="+";
                    a=b;
                }
                int diff=location-a;
                if(diff>0){
                    for(int i=0;i<diff;i++){
                        program+=">";
                    }
                } else {
                    for(int i=0;i<diff;i++){
                        program+="<";
                    }
                }
                program+="]";
            } else if(type.equals("subFrom")){ // "subFrom 4 5 7 9" subtracts the value of location 4 to locations 5, 7, and 9, and erases 4.
                Object temp=new Integer(st.nextToken());
                int location=(Integer)temp;
                for(int i=0;i<location;i++){
                    program+=">";
                }
                program+="[-";
                int a=location;
                int b;
                while(st.hasMoreTokens()){
                    b=Integer.valueOf(st.nextToken());
                    int diff=b-a;
                    if(diff>0){
                        for(int i=0;i<diff;i++){
                            program+=">";
                        }
                    } else {
                        for(int i=0;i<diff;i++){
                            program+="<";
                        }
                    }
                    program+="-";
                    a=b;
                }
                int diff=location-a;
                if(diff>0){
                    for(int i=0;i<diff;i++){
                        program+=">";
                    }
                } else {
                    for(int i=0;i<diff;i++){
                        program+="<";
                    }
                }
                program+="]";
            } else if(type.equals("print")){// "print 3" prints the value of 3, cast to a char.
                int point=Integer.valueOf(st.nextToken());
                for(int i=0;i<point;i++){
                    program+=">";
                }
                program+=".";
                for(int i=0;i<point;i++){
                    program+="<";
                }
            } else if(type.equals("read")){// "read 3" grabs one char from the input, and assigns it to position 3.
                int point=Integer.valueOf(st.nextToken());
                for(int i=0;i<point;i++){
                    program+=">";
                }
                program+=",";
                for(int i=0;i<point;i++){
                    program+="<";
                }
            } else if(type.equals("while")){//"while 5" will loop as long as 5 is not zero.
                int continueLoopingWhileNotEqualToZeroLocation=(Integer)new Integer(st.nextToken());
                for(int i=0;i<continueLoopingWhileNotEqualToZeroLocation;i++){
                    program+=">";
                }
                program+="[";
                for(int i=0;i<continueLoopingWhileNotEqualToZeroLocation;i++){
                    program+="<";
                }
                ((Stack<Integer>)continueLoopingWhileNotEqualToZeroLocations).push(continueLoopingWhileNotEqualToZeroLocation);
            } else if(type.equals("endwhile")){
                int l=((Stack<Integer>)continueLoopingWhileNotEqualToZeroLocations).pop();
                for(int i=l/2;i<-((l+1)/2);i--){
                    program+=">";
                }
            } else if(type.equals("rand")){
                program+="J";
            } else {
                System.out.println("UNRECOGNIZED COMMAND "+type);
                int a=1/0; //Kills the program.
            }
        }
        return program;
    }
}

Answer 6

Этот фрагмент JavaScript поставляется с генератором текста:

function cth(i) {
    return i > 16 ? cth(i >> 4) + cth(i & 15) : "" + (i < 10 ? i : String.fromCharCode(55 + i))
}

function nc(s) {
    return c += s
}
var w = [],
    s = [],
    c = 0,
    t = new Date().getTime()
    s[0] = cth(nc(71)) s[1] = cth(nc(40)) s[2] = cth(nc(-11))
    s.splice(1, 0, s.slice(1, 2)[0])
    w.push(unescape("%" + s.join("%")))
    s[0] = cth(nc(-23)) s[2] = cth(nc(37)) s[3] = cth(nc(-4)) s[4] = cth(nc(-5)) s[5] = cth(nc(-2))
    s.splice(5, 0, s.slice(3, 4)[0])
    w.push(unescape("%" + s.join("%")))
    s.splice(0, 3)
    s.unshift(cth(nc(-2))) s.unshift(s[s.length - 1].replace(/(.)(.)/, "$2$1")) s.unshift(cth(nc(-32)))
    w.push(unescape("%" + s.join("%")))
    s = w[0].split(/[^aeiou]/i) s[0] = "After"
    s = s.join("n")
    w.push(s)
    s = String(69676874).replace(/(..)/g, "%$1")
    w.push("N" + unescape(s))
    t /= c
    alert(w[0] + " " + w[1 + (t & 3)])

Да, это не длинный код, но иметь его все равно бессмысленно.

Answer 7

Для вашего удовольствия ...

<?php

$play = 71;
$ball = array(40,0,-11);
p($play,$ball);
$hello = 32;
p($hello,array());
$p = rand(1,4);
switch($p) {
    case 1:
        $dead = 77;
        $beef = array(34,3,-4,-5,5,-7);
        break;
    case 2:
        $dead = 65;
        $beef = array(37,14,-15,13,-4,1,0,-1);
        break;
    case 3:
        $dead = 69;
        $beef = array(49,-17,9,-5,5,-7);
        break;
    case 4:
        $dead = 78;
        $beef = array(27,-2,1,12);
}
p($dead,$beef);
$peanut = 13;
$butter = array(-3);
p($peanut,$butter);

function p($place,$path) {
    echo chr($place);
    while (count($path)) { $x = array_shift($path); $place += $x; echo chr($place); }
}

Обновленная сокращенная версия ... Я действительно не понимаю, почему длина является обязательным требованием.Я думаю, что некоторые из этих ответов легко поддерживать (добавить возможное приветствие, изменить существующие).Вы действительно думаете, что вам будет легче изменить это?:

<?php 

play(array(71,40,0,-11));
play(array(32));
p($hello,array());
$p = rand(1,4);
play(($p == 1 ? play(array(77,34,3,-4,-5,5,-7)) : 
($p == 2 ? play(array(65,37,14,-15,13,-4,1,0,-1)) : 
($p == 3 ? play(array(69,49,-17,9,-5,5,-7)) : 
($p == 4 ? play(array(78,27,-2,1,12)) 
: die('RUN'))))));
play(array(13,-3));

function play($packet) {
    if (count($packet) > 1) {
        $packet[0] += $x = array_shift($packet);
        echo chr($x);
        play($packet);
    } else echo chr($packet[0]);
}

Answer 8

Вот один из меня, на PHP.В нем есть по крайней мере несколько WTF, по крайней мере, несколько ошибок, и слишком много чрезмерного проектирования.Наслаждайтесь ...

<?php
class RandomString {
    protected $options = array();
    protected $lenght = 0;
    public function __construct(array $options) {
        $this->options = $options;
        $this->length = count($options);
    }
    public function __toString() {
        return Random::getArrayElement($this->options);
    }
    public function addString($string) {
        $this->options = ArrayModifier::Add($this->options, $string);
        $this->length = count($string);
    }
    public function removeString($string) {
        $this->options = ArrayModifier::Remove($this->options, $string);
        $this->length = count($string);
    }
}
abstract class RandomStringFactory {
    public static function make($options) {
        return new RandomString(self::makeOptions($options));
    }
    protected static function makeOptions($options) {
        if (is_array($options)) {
            return $options;
        } elseif (is_string($options)) {
            $delimiter = self::detectDelimiter($options);
            return explode($delimiter, $options);
        } else {
            return (array) $options;
        }
    }
    protected static function detectDelimiter($string) {
        $delims = array(',', ';', ':', '|', '&', '-', '+', '!');
        foreach ($delims as $delim) {
            if (strpos($string, $delim)) {
                return $delim;
            }
        }
        return ' ';
    }
}
class RandomEnd extends RandomString {
    public function __construct() {
        parent::__construct(explode(',', 'Morning,Afternoon,Evening,Night'));
    }
}

abstract class Random {
    public static function getArrayElement(array $array) {
        $length = count($array);
        $key = self::getRandom(0, $length - 1);
        $i = 0;
        foreach ($array as $value) {
            if ($i == $key) {
                return $value;
            }
            $i++;
        }
        return end($array);
    }
    public static function getRandom($start, $end) {
        $diff = $end - $start;
        $seed = self::getRandomSeed();
        return round($seed * $diff + $start);
    }
    public static function getRandomSeed() {
        $t = microtime(true);
        for ($i = 0; $i < 10000; $i++) {
            $m = mt_rand(0, 10000);
            if ($t % $m == mt_rand(0, 100)) {
                $factor = ($m - $t) / ($t - $m);
                $seed = mt_rand(0, 100000) / $factor;
                $seed *= ($m - $t);
                $stub = $t * 100000;
                $stub += -1 * $m * 100000;
                $scrum = $seed / $stub;
                return $scrum;
            }
        }
        return mt_rand(0, 10000) / 10000;
    }
}
class ArrayModifier {
    public static function add(&$array, $value) {
        $newArray = $array;
        $newArray[] = $value;
        return $newArray;
    }
    public static function remove(&$array, $value) {
        $newArray = array();
        foreach ($array as $key => &$val) {
            if ($val == $value) {
                unset($array[$key]);
            }
            $newArray[$key] = $val;
        }
        return $newArray;
    }
}

class RandomSentance {
    protected $elements = array();
    public function __construct(array $elements) {
        $this->elements = $elements;
    }
    public function __toString() {
        return implode(' ', $this->elements);
    }
}
$sentance = new RandomSentance(
    array(
        RandomStringFactory::make('Good'),
        RandomStringFactory::make('Morning,Afternoon,Night,Evening'),
    )
);
echo $sentance;

Answer 9

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

// Forward declarations
struct HandleObj;
typedef struct HandleObj *Handle;
char* GetErrorString(Handle failed);
void DestroyObject(Handle obj);

Handle CreateTimeOfDayProvider(void);
Handle GetTimeOfDay(Handle timeOfDayProvider);
char* GetTimeOfDayName(Handle timeOfDay);

// Program
int main(int argc, char *argv[])
{
    int argi = 0;
    Handle todph, day;
    char *name;

    for(argi = 1; argi < argc; argi++) {
        if(!strcmp(argv[argi], "-h") || !strcmp(argv[argi], "--help")) {
            printf("Usage: ./greet [-h] [-v] [locale]\n");
            printf(" -h, --help:    Displays this help text.\n");
            printf(" -v, --version: Displays version information\n");
            return 0;
        }
        if(!strcmp(argv[argi], "-v") || !strcmp(argv[argi], "--version")) {
            printf("0.1.0a\n");
            return 0;
        }

        printf("Error: Unknown option \"%s\"\n", argv[argi]);
        return 1;
    }

    if(!(todph = CreateTimeOfDayProvider())) {
        printf("Could not create Time of Day Provider!\n");
        printf("Reason: %s\n", GetErrorString(todph));
        return 2;
    }

    if(!(day = GetTimeOfDay(todph))) {
        printf("Could not get Time of Day!\n");
        printf("Reason: %s\n", GetErrorString(day));
        return 3;
    }

    if(!(name = GetTimeOfDayName(day))) {
        printf("Could not get Time of Day object name!\n");
        printf("Reason: %s\n", GetErrorString(day));
        return 4;
    }

    printf("Good %s", name);
    DestroyObject(todph);
    DestroyObject(day);
    return 0;
}

// Implementation Details
#define DAY_HANDLE 1
#define TIME_OF_DAY_PROVIDER_HANDLE 2

struct HandleObj
{
    int objType;
    void *objPTR;
    char *error;
    void (*Destructor)(void);
};

Handle CreateHandle(int objtype, void *objptr, void(*dtor)(void))
{
    Handle obj = (Handle) malloc(sizeof(struct HandleObj));
    obj->objType = objtype;
    obj->objPTR = objptr;
    obj->error = 0;
    obj->Destructor = dtor;
}

void DestroyObject(Handle h)
{
    if(h->Destructor) {
        h->Destructor();
    }
    free(h->objPTR);
    free(h);
}

#define OBJECT(type, code, handle, output) \
    do { \
    if(handle->objType != code) { \
        handle->error = "Invalid operation for this handle"; \
        return NULL; \
    } \
    output = (type*) handle->objPTR; \
    } while(0);

typedef struct {
    int timeIndex;
} DayObject;

typedef struct {
    int seeed;
} TimeOfDayProviderObject;

Handle CreateTimeOfDayProvider(void)
{
    TimeOfDayProviderObject *obj = (TimeOfDayProviderObject*) malloc(sizeof(TimeOfDayProviderObject));
    obj->seeed = time(NULL) * 26 - 30;
    return CreateHandle(TIME_OF_DAY_PROVIDER_HANDLE, obj, NULL);
}

Handle CreateTime(int timeIndex)
{
    DayObject *time = malloc(sizeof(DayObject));
    time->timeIndex = timeIndex;
    return CreateHandle(DAY_HANDLE, time, NULL);
}

char *names[] = {"Morning", "Afternoon", "Evening", "Night"};
char* GetTimeOfDayName(Handle h)
{
    DayObject *obj;
    OBJECT(DayObject, DAY_HANDLE, h, obj);
    return names[obj->timeIndex];
}

Handle GetTimeOfDay(Handle h)
{
    TimeOfDayProviderObject *obj;
    OBJECT(TimeOfDayProviderObject, TIME_OF_DAY_PROVIDER_HANDLE, h, obj);

    srand(obj->seeed);
    int value = rand();
    obj->seeed = value;
    return CreateTime(value % 4);
}

char* GetErrorString(Handle failed)
{
    return failed->error;
}

Answer 10

Аскер упомянул регулярные выражения, поэтому ясно он ищет ответ, используя регулярные выражения. Я был сбит с толку после того, как увидел, что большинство ответов до сих пор полностью не в состоянии понять силу регулярных выражений и принять их.

Итак, мое решение. Код Python, который генерирует случайные совпадения с заданным регулярным выражением. И вывод абсолютно случайно , я клянусь!

import random, time

def parse_regex(regex):
        path = [('()', []), ('|', [])]
        path[0][1].append(path[1])
        i = 0
        while i < len(regex):
                char = regex[i]
                if path[-1][0] in ('[]', '[^]'):
                        if char == ']' and path[-1][1]:
                                old2 = path.pop()
                                assert old2[0] in ('[]', '[^]')
                        elif char == '-' and len(path[-1][1]) and i+1 < len(regex) and regex[i+1] != ']':
                                tmp1 = path[-1][1].pop()
                                assert tmp1[0] is None
                                tmp1 = tmp1[1]
                                tmp2 = regex[i+1]
                                assert ord(tmp2) > ord(tmp1)
                                for tmp in range(ord(tmp1), ord(tmp2) + 1):
                                        path[-1][1].append((None, chr(tmp)))
                                i += 1
                        else:
                                path[-1][1].append((None, char))
                else:
                        if char == '(':
                                new1 = ('()', [])
                                new2 = ('|', [])
                                new1[1].append(new2)
                                path[-1][1].append(new1)
                                path.extend([new1, new2])
                        elif char == ')':
                                old2 = path.pop()
                                old1 = path.pop()
                                assert old2[0] == '|'
                                assert old1[0] == '()'
                        elif char == '|':
                                new2 = ('|', [])
                                old2 = path.pop()
                                assert old2[0] == '|'
                                path[-1][1].append(new2)
                                path.append(new2)
                        elif char == '[':
                                tmp = '[]'
                                if i+1 < len(regex) and regex[i+1] == '^':
                                        tmp = '[^]'
                                        i += 1
                                new = (tmp, [])
                                path[-1][1].append(new)
                                path.append(new)
                        elif char == '.':
                                path[-1][1].append(('.', None))
                        elif char in ('*', '+', '?'):
                                assert len(path[-1][1])
                                tmp = path[-1][1].pop()
                                path[-1][1].append((char, tmp))
                        else:
                                path[-1][1].append((None, char))
                i += 1
        assert len(path) == 2
        return path[0]

def generate_match(regextree):
        match = ''
        if regextree[0] == '()':
                regextree = random.choice(regextree[1])
                match += generate_match(regextree)
        elif regextree[0] == '|':
                for item in regextree[1]:
                        match += generate_match(item)
        elif regextree[0] == None:
                match += regextree[1]
        elif regextree[0] == '.':
                match += random.choice([chr(i) for i in range(32, 127)])
        elif regextree[0] in ('*', '+'):
                if regextree[0] == '+':
                        match += generate_match(regextree[1])
                # We favour shorter matches
                while True:
                        if random.choice(['yes', 'yes', 'no']) == 'yes':
                                match += generate_match(regextree[1])
                        else:
                                break
        elif regextree[0] == '?':
                if random.choice(['yes', 'no']) == 'yes':
                        match += generate_match(regextree[1])
        elif regextree[0] == '[]':
                match += random.choice([generate_match(item) for item in regextree[1]])
        elif regextree[0] == '[^]':
                match += random.choice(list(set(chr(i) for i in range(32, 127)) - set(generate_match(item) for item in regextree[1])))
        else:
                raise
        return match

t1 = time.time()
y, m, d = time.localtime(t1)[:3]
t2 = time.mktime((y, m, d, 0, 0, 0) + time.localtime(t1)[-3:])
t = int(t1 - t2)

# Can't rely on python setting the random seed randomly enough.
# Thus, we seed it with the help of cafebabe and current time.    
random.seed((0xcafebabe ^ 0x4eb) + t / 21600)

print generate_match(parse_regex('Good (Morning|Afternoon|Evening|Night)'))