Mad Libs: Difference between revisions

This is extremely messy code. There's bound to be a more optimal way of doing this.

<lang Java>import java.util.Map;

import java.util.HashMap;

import java.util.Scanner;

import java.util.StringTokenizer;

public class MadLibs

{

public static void main(String[] args)

{

Scanner s=new Scanner(System.in);

String line;

StringBuffer storybuffer=new StringBuffer();

//Accept lines until empty line is entered

while(!(line=s.nextLine()).isEmpty())

storybuffer.append(" "+line);

//Remove first space

storybuffer.delete(0, 1);

String story=storybuffer.toString();

//Split

StringTokenizer str=new StringTokenizer(story);

String word;

StringBuffer finalstory=new StringBuffer();

//Store added elements

Map<String,String> hash=new HashMap<String,String>();

while(str.hasMoreTokens())

{

word=str.nextToken();

if(word.contains("<"))

{

String add="";

//Element prompt could be more than one word

if(!word.contains(">"))

{

//Build multi-word prompt

String phrase="";

do{

phrase+=word+" ";

}while(!(word=str.nextToken()).contains(">"));

word=phrase+word;

}

//Account for element placeholder being immediately followed by . or , or whatever.

if(word.charAt(word.length()-1)!='>')

add=word.substring(word.lastIndexOf('>')+1);

//Store id of element in hash table

String id=word.substring(0,word.lastIndexOf('>')+1);

String value;

if(!hash.containsKey(id))

{

//New element

System.out.println("Enter a "+ id);

value=s.nextLine()+add;

hash.put(id, value);

}

//Previously entered element

else

value=hash.get(id);

word=value;

}

finalstory.append(word+" ");

}

System.out.println(finalstory.toString());

s.close();

}

}</lang>

{{out}}

<pre>

<name> went for a walk in the park. <he or she>

found a <noun>. <name> decided to take it home.

Enter a <name>

Champak

Enter a <he or she>

He

Enter a <noun>

hippo

Champak went for a walk in the park. He found a hippo. Champak decided to take it home.

</pre>