ContinuousIntegration/TDD-pure-function/src/main/java/de/edu/hsfulda/ciip/tdd/BownlingCalculator.java

package de.edu.hsfulda.ciip.tdd;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class BownlingCalculator {

	public int evaluate(String listOfThrows) {
		int sum = 0;
		Matcher singleDigit = Pattern.compile("\\d").matcher(listOfThrows);
		while (singleDigit.find()) {
			sum += Integer.parseInt(singleDigit.group());
		}
		singleDigit = Pattern.compile("(\\d)/ (\\d)").matcher(listOfThrows);
		while (singleDigit.find()) {
			sum += 10 - Integer.parseInt(singleDigit.group(1)) + Integer.parseInt(singleDigit.group(2));
		}
		return sum;
	}

}