[RESOLVED] Word list combinations

[Totte_ch]

Hi

I'm making a program that will count how many different combinations you can get of a string. The counting works fine, but when I tried to make a function that creates a list of words with combinations, I get java.lang.ArrayIndexOutOfBoundsException.
The function is attached below and is used this way:

int c = calculateCombinations(t.getText());
String[] arr = new String[c];
getWordList(createWordList(arr, "", t.getText()))

I've tried to put other numbers than c, but it doesn't matter. The function should work but I think there is a stack problem in the createWordList().
Can somebody help me with this?

[Fonske]

Ever heard of debugging? You can actually see where it goes wrong...
Anyway, the reason why you have this OutOfBoundException is because you are trying to set a element of the array at index = length.
Index is 0-based, length = 1 based (number of elements in the array).

Eg.:
Given: An array "test" with 4 element
the result of test.length is "4". The index of 4th element is '3'. That's why you get this exception.

*Edit* this happens in your text-file at line 33...

[Totte_ch]

Sorry, but I don't understand. What am I suppost to do?

Edit: Added a extern int to the function, works fine...

int arrayIndex = 0;
private String[] createWordList(String[] wordArray, String strbase, String remainingchars){
	if(remainingchars.length()==1){
		wordArray[arrayIndex] = strbase+remainingchars.charAt(0);
		arrayIndex++;
	}else{
		for(int j=0; j<remainingchars.length(); j++) {
			char currchar = remainingchars.charAt(j);
			if(remainingchars.indexOf(currchar)==j)
				wordArray = createWordList(wordArray, strbase+remainingchars.charAt(j), remainingchars.substring(0,j)+remainingchars.substring(j+1,remainingchars.length()));
		 }
	}
	return wordArray;
}