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Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does the regular expression β
represent?
π‘ Hint: Think of it as having no possible options.
Question 2
Easy
Write a regular expression for a single character 'b'.
π‘ Hint: It's simply the character itself.
Practice 4 more questions and get performance evaluation
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What does the expression 'Ο΅' represent?
π‘ Hint: Think about what the empty string actually includes.
Question 2
True or False: The expression a | b
means match either 'a' or 'b'.
π‘ Hint: Consider if 'or' means one of the options.
Solve 1 more question and get performance evaluation
Push your limits with challenges.
Question 1
Construct a regular expression that describes a string containing only the letters a to z, with lengths ranging from 1 to 5 characters.
π‘ Hint: Consider using ranges to define the permissible characters and lengths.
Question 2
Create a regex to match a valid email format: it must have an alphanumeric username followed by '@', then a domain.
π‘ Hint: Think about components of emails and their general format.
Challenge and get performance evaluation