Core Java Programming Course- Quantifiers in RegEx (regular expressions)

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary purpose of quantifiers in regular expressions?
To match a single character
To match multiple occurrences of a character or block
To replace characters in a string
To define a new character set
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the * quantifier function in a regular expression?
It matches the preceding character zero or more times
It matches the preceding character exactly once
It makes the preceding character optional
It matches the preceding character one or more times
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What will the * quantifier return if the preceding character is absent in the string?
A warning
An error
True
False
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the key difference between the * and + quantifiers?
* requires at least one occurrence, + does not
+ requires at least one occurrence, * does not
+ matches exactly once, * matches zero or more times
* matches exactly once, + matches zero or more times
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In what scenario will the + quantifier return false?
When the preceding character is present once
When the preceding character is absent
When the preceding character is optional
When the preceding character is present multiple times
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the ? quantifier do in a regular expression?
Makes the preceding character optional
Matches the preceding character exactly twice
Matches the preceding character zero or more times
Matches the preceding character one or more times
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the ? quantifier affect the matching of a character?
It requires the character to appear at least once
It allows the character to appear zero or one time
It allows the character to appear any number of times
It requires the character to appear twice
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