countin unique chars !

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 .

Code:

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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;
        }

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Help help help please !!!

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

Quote:

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Originally Posted by pauser

Code:

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

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

-Gary-

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

Code:

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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();

        }

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