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@ -4,18 +4,34 @@ import java.util.regex.Matcher; |
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import java.util.regex.Pattern; |
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import java.util.regex.Pattern; |
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public class BownlingCalculator { |
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public class BownlingCalculator { |
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private static final int PINS_IN_FRAME = 10; |
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private static final String SPARE = "(\\d)/ (\\d)"; |
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private static final String INCOMPLETE_FRAME = "\\d"; |
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@FunctionalInterface |
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private interface FrameCalculator { |
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int evaluate(Matcher frameStructure); |
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} |
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private static final int SPARE_FRAME_FOLLOWING_THROW = 2; |
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private static final int SPARE_FRAME_FIRST_THROW = 1; |
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public int evaluate(String listOfThrows) { |
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public int evaluate(String listOfThrows) { |
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int sum = 0; |
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int sum = 0; |
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Matcher singleDigit = Pattern.compile("\\d").matcher(listOfThrows); |
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while (singleDigit.find()) { |
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sum += Integer.parseInt(singleDigit.group()); |
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sum += evaluateFrames(listOfThrows, INCOMPLETE_FRAME, m -> Integer.parseInt(m.group())); |
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sum += evaluateFrames(listOfThrows, SPARE, m -> PINS_IN_FRAME// |
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- Integer.parseInt(m.group(SPARE_FRAME_FIRST_THROW)) |
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+ Integer.parseInt(m.group(SPARE_FRAME_FOLLOWING_THROW))); |
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return sum; |
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} |
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} |
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singleDigit = Pattern.compile("(\\d)/ (\\d)").matcher(listOfThrows); |
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private int evaluateFrames(String listOfThrows, String frameStructurePattern, FrameCalculator frameCalculator) { |
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Matcher singleDigit = Pattern.compile(frameStructurePattern).matcher(listOfThrows); |
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int frameValue = 0; |
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while (singleDigit.find()) { |
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while (singleDigit.find()) { |
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sum += 10 - Integer.parseInt(singleDigit.group(1)) + Integer.parseInt(singleDigit.group(2)); |
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frameValue += frameCalculator.evaluate(singleDigit); |
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} |
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} |
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return sum; |
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return frameValue; |
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} |
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} |
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} |
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} |