Turn String aaaabbbbffffd into a4b4d3

Question

I\'m trying to get a head start on practicing interview questions and I came across this one:

Turn String aaaabbbbffffd into a4b4d3

You would basically want t

Answer 1

Here is the code that I tried.

I think you can't ask for a simpler code than this.

    String s = "aaaabbbbffffd", modified = "";
    int len = s.length(),  i = 0,  j = i + 1,  count = 1;
    char[] c = s.toCharArray();
    for (; i < len; i = j) {
        count = 1;
            for (; j < len; j++) 
                 if (c[i] == c[j]) 
                 count++;
                    else {
                    j++;
                    break;
                    }
        modified += c[i] + "" + count;
    }
    System.out.println(modified);