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Reversing Order of Words in a Sentence

1 reply on 1 page. Most recent reply: May 15, 2004 12:13 AM by Dhrubo

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Molly

Posts: 1
Nickname: seksee
Registered: May, 2004

Reversing Order of Words in a Sentence

Posted: May 14, 2004 4:21 PM

I really need some help on this, I can't get my program to run right.
I need to write a java program to reverse the order of words of an input sentence until the user says "no more"
I have this so far:

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

public class ReverseWords

{
public static void main(String args[]) throws IOException
{
BufferedReader keyboard=new BufferedReader(new InputStreamReader(System.in));
boolean anotherSentence=true;
{
while(anotherSentence)
{
System.out.print("Type in any sentence without punctuation: ");
Stack stack=new Stack();
StringTokenizer tokenizer=new StringTokenizer(keyboard.readLine());
while(tokenizer.hasMoreTokens())
{
stack.push(tokenizer.nextElement());
}
System.out.print("Reverse word string: ");
while(!stack.empty())
{
System.out.print(stack.pop());
System.out.print(" ");
}
System.out.println(" ");
if(tokenizer.equals("no more"))
anotherSentence=false;
}
}
}
}

Everything works right except if I type "no more" in the input area, it just keeps running; doesn't stop.
Can anyone help me out??

Dhrubo

Posts: 32
Nickname: dhrubo
Registered: Mar, 2003

Re: Reversing Order of Words in a Sentence

Posted: May 15, 2004 12:13 AM

Hi darling ,
This one does what u want
import java.io.*;
import java.util.*;

public class ReverseWords

{
public static void main(String args[]) throws IOException
{
BufferedReader keyboard=new BufferedReader(new InputStreamReader(System.in));
boolean anotherSentence=true;
String lineread="";
//dont declare variables in a loop
Stack stack = null;
StringTokenizer tokenizer = null;

{
while(anotherSentence)
{
System.out.print("Type in any sentence without punctuation: ");
stack=new Stack();
lineread = keyboard.readLine();
//line added by Dhrubo
if(lineread.equals("no more"))
break;

tokenizer=new StringTokenizer(lineread);

while(tokenizer.hasMoreTokens())
{
stack.push(tokenizer.nextElement());
}
System.out.print("Reverse word string: ");
while(!stack.empty())
{
System.out.print(stack.pop());
System.out.print(" ");
}
System.out.println(" ");
if(tokenizer.equals("no more"))
anotherSentence=false;
}
}

//line added by Dhrubo
//always close the stream best practise
keyboard.close();
}
}

---dhrubo
dhrubo@indiainfo.com

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