Regular Expressions 101

Negated Character Class[^a]*

*matches any number of characters outside the set below:

athe literal a (97₁₀ / 141₈ / 61₁₆) (case sensitive)

Non-Capturing Group(?:a(?!\))[^a]*)*

*repeats the group contents below any number of times:

athe literal a (97₁₀ / 141₈ / 61₁₆) (case sensitive)

Negative Lookahead(?!\))

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

Negated Character Class[^a]*

*matches any number of characters outside the set below:

athe literal a (97₁₀ / 141₈ / 61₁₆) (case sensitive)

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

[^a]*(?:a(?!\))[^a]*)*

New

pergunta pergunta pergunta pergunta pergunta pergunta pergunta pergunta pergunta pergunta pergunta pergunta pergunta pergunta pergunta

pergunta pergunta pergunta pergunta pergunta pergunta pergunta pergunta pergunta pergunta pergunta pergunta pergunta pergunta pergunta pergunt

  aa) resposta a

  b) resposta b 

  c) resposta c

  d) resposta d

  e) resposta e

Regular Expression

Substitution