Quiz · 5 questions
➕ Quantifiers
How many times? Greedy, lazy, possessive — and the engine moves you can't see
Level 0Pattern-Curious
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Quiz
01Which quantifier means 'zero or more times'?
Hint
Star is permissive — even zero matches.
02Pattern
<.*> against input <a><b> matches what?Hint
Greedy means LONGEST possible.
03Why is
[^X]* often preferred over .*??Hint
Negated classes don't backtrack.
04Pattern
foo? matches what?Hint
? applies to ONE preceding char unless grouped.
05What does the captured group return for
(ab)+ matched against abababab?Hint
A repeated capture group keeps only the LAST iteration.
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