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Pattern finding

You need to group sales by platform generation for a trend analysis. By extracting version numbers from platform names, you can categorize sales across different console generations. You've extracted some platform names from the video game dataset.

The necessary packages such as CharMatcher, and Pattern have been imported for you.

Questo esercizio fa parte del corso

Cleaning Data in Java

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Istruzioni dell'esercizio

  • Check if the matcher finds any version number.
  • Report the version number that the matcher finds.

Esercizio pratico interattivo

Prova a risolvere questo esercizio completando il codice di esempio.

public class PatternValidation {
    public static void main(String[] args) {
        List platforms = Arrays.asList("PlayStation 5", "PlayStation 4", "Xbox One", "Switch");
        Pattern versionPattern = Pattern.compile("\\d");  // Match single digit versions

        for (String platform : platforms) {
            Matcher matcher = versionPattern.matcher(platform);
            // Check if the matcher finds any version number
            if (____.____()) {
                // Report the version number that the matcher finds
                System.out.println(platform + ": version " + ____.____());
            } else {
                System.out.println(platform + ": no version number");
            }
        }
    }
}
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