Full pattern matching
You're preparing a historical analysis of game releases, but your database contains dates in mixed formats. Before you can analyze release timing patterns, you need to identify which dates need reformatting to match your standard MM/DD/YYYY format. You've extracted dates from the video game dataset below.
| Game | Platform | Release date | Quantity (millions of units) |
|---|---|---|---|
| Wii Sports | Wii | 11/19/2006 | 41.49 |
| Super Mario Bros. | NES | 11/13/1985 | 29.08 |
| Mario Kart Wii | Wii | 4/10/2008 | 15.85 |
The necessary packages such as Pattern, and Matcher have been imported for you.
이 연습은 강의의 일부입니다
Cleaning Data in Java
연습 안내
- Define a regex pattern to match the date format
d/MM/yyyy. - Check if the entire
datestring matchesdatePattern.
실습형 인터랙티브 연습
이 예제를 이 샘플 코드를 완성하여 풀어보세요.
public class PatternValidation {
public static void main(String[] args) {
List dates = Arrays.asList("11/19/2006", "11/13/1985", "4/10/2008", "2008-04-10");
// Define a regex pattern to match the date format
Pattern datePattern = ____.____("\\d{1,2}/\\d{1,2}/\\d{4}");
for (String date : dates) {
// Check if entire date string matches datePattern
boolean isValid = datePattern.____(date).____();
System.out.println(date + " is valid: " + isValid);
}
}
}