countin unique chars !

**pauser** · 04-26-2010, 12:46 AM

Hi everyone !
Im new in this forum!

Im having a problem. I want to count the unique characters of a String(Ascii Image) without using Arrays .
I've already tried this, but no result :S .

PHP Code:

public int getUniqueChars(){
	String imgchar = Image; //Image is the original asciiImage
	for(int i=0;i<imgchar.length();i=i+0){
		imgchar=imgchar.replaceAll(Character.toString(imgchar.charAt(i)),"");
		}
		imgChars = imgchar.length();
	return imgChars;
	}

**pauser** · 04-26-2010, 01:50 AM

Help help help please !!!

**Fubarable** · 04-26-2010, 02:45 AM

You've bumped your thread after it's been here for only an hour. Please read this link to see why this may have the opposite effect you intended: PatienceIsAVirtue

**gcalvin** · 04-26-2010, 02:49 AM

Originally Posted by pauser

PHP Code:

	for(int i=0;i<imgchar.length();i=i+0){

It's gonna take a while for i to get to imgchar.length when it's advancing zero characters at a time.

-Gary-

**pauser** · 04-27-2010, 04:07 PM

I found the solution :D . Sorry, i could not wait :S.

PHP Code:

public int getUniqueChars(){

		

	String imgchars = "";

	for(int i=0;i<Image.length();i++){

		if(!imgchars.contains(Character.toString(Image.charAt(i))))

			imgchars += Character.toString(Image.charAt(i));

		}

	return imgchars.length();

	}