Split a string, at every nth position

Question

I use this regex to split a string at every say 3rd position:

String []thisCombo2 = thisCombo.split(\"(?<=\\\\G...)\");

where the 3 dots

Answer 1

If you want to build that regex string you can set the split length as a parameter.

public String getRegex(int splitLength)
{
    StringBuilder builder = new StringBuilder();
    for (int i = 0; i < splitLength; i++)
        builder.append(".");

    return "(?<=\\G" + builder.toString() +")";
}