What does the ? symbol within regular expressions represent?
What does the ? symbol within regular expressions represent?
The ? symbol within regular expressions represents matching the preceding qualifier zero or one times. This makes the preceding element optional, allowing it to occur either not at all or exactly once.
regular expression ? means exactly one occurrence, extended regular expression means zero or one
agree with you. * matches up zero or more times the preceding character per documentation.
The ? symbol within regular expressions represents: C. Match the preceding qualifier zero or one time. In regular expressions, the `?` is used to indicate that the preceding character or group is optional, meaning it can appear zero times or once. It allows for matching either a single occurrence or none at all of the preceding element.