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I am writing an encryption program for a course I am taking to learn Java. The method is supposed to split text into chunks, chunk size specified by user. ("3" = "XXX XXX XXX") I am then supposed to pad the end of the String with "x"s when the String doesn't split evenly. I have not written the part to pad the "x"s at the end yet, because my method is leaving the "oddballs" at the beginning. ("3" = "X XXX XXX XXX" or "XX XXX XXX" INSTEAD OF "XXX XXX XX" or "XXX XXX X") I have written my method below. Any advice would be greatly appreciated!

What I have tried:

Java
public static String groupify(String str, int n){

        if(str.length() == 0)
            return str;
        char c = str.charAt(0);
        String s = " ";
        if(str.length() % n == 1)
            return c + s + groupify(str.substring(1), n);
        return c + groupify(str.substring(1), n);
    }
Posted
Updated 29-Sep-18 4:27am
v2
Comments
[no name] 27-Sep-18 17:23pm    
We don't do "code reviews".

You "ask a question"; we try to answer. That's it.
Ryan Huffman 27-Sep-18 18:16pm    
I only included code, because I figured it was needed. How could someone help me find my error without the code? I'm honestly just trying to understand. I have Googled this at least 10 times (different wording every time) and read everything it brought up that seemed even somewhat related. I have posted on programming Facebook sites. I have been trying to figure it out on my own by changing the code. I'm at a loss at this point.
Richard MacCutchan 28-Sep-18 3:19am    
Starting at the beginning of the string.
- if the string length is less than or equal to n, return the string.
- take the first substring of length n and add it to your chunk set
- repeat until no more data.
Member 14000163 28-Sep-18 16:01pm    
Thank you very much, Richard MacCutchan!

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