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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.

This exercise is part of the course

Cleaning Data in Java

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Exercise instructions

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

Hands-on interactive exercise

Have a go at this exercise by completing this sample code.

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

import com.google.common.base.CharMatcher;

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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