public String group(int group) {ensureMatch();int from = matchOffsets[group * 2];int to = matchOffsets[(group * 2) + 1];if (from == -1 || to == -1) {return null;} else {return input.substring(from, to);}}
public string group(int group_1){ensureMatch();int from = matchOffsets[group_1 * 2];int to = matchOffsets[(group_1 * 2) + 1];if (from == -1 || to == -1){return null;}else{return Sharpen.StringHelper.Substring(input, from, to);}}