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Question 40/166
You are implementing a method named GetValidPhoneNumbers. The GetValidPhoneNumbers() method processes a list of string values that represent phone numbers.
The GetValidPhoneNumbers()method must return only phone numbers that are in a valid format.
You need to implement the GetValidPhoneNumbers()method.
Which two code segments can you use to achieve this goal? (Each correct answer presents a complete solution. Choose two.)
The GetValidPhoneNumbers()method must return only phone numbers that are in a valid format.
You need to implement the GetValidPhoneNumbers()method.
Which two code segments can you use to achieve this goal? (Each correct answer presents a complete solution. Choose two.)
Correct Answer: A,B
Explanation/Reference:
Explanation:
Regex.Matches
Searches an input string for all occurrences of a regular expression and returns all the matches.
MatchCollection
Represents the set of successful matches found by iteratively applying a regular expression pattern to the input string.
The collection is immutable (read-only) and has no public constructor. The Regex.Matches method returns a MatchCollection object.
List<T>.Add Method
Adds an object to the end of the List<T>.
Explanation:
Regex.Matches
Searches an input string for all occurrences of a regular expression and returns all the matches.
MatchCollection
Represents the set of successful matches found by iteratively applying a regular expression pattern to the input string.
The collection is immutable (read-only) and has no public constructor. The Regex.Matches method returns a MatchCollection object.
List<T>.Add Method
Adds an object to the end of the List<T>.
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