regular expression to find a string code example

Example 1: regex examples

abc*        matches a string that has ab followed by zero or more c -> Try it!abc+        matches a string that has ab followed by one or more cabc?        matches a string that has ab followed by zero or one cabc{2}      matches a string that has ab followed by 2 cabc{2,}     matches a string that has ab followed by 2 or more cabc{2,5}    matches a string that has ab followed by 2 up to 5 ca(bc)*      matches a string that has a followed by zero or more copies of the sequence bca(bc){2,5}  matches a string that has a followed by 2 up to 5 copies of the sequence bc

Example 2: regex examples

a(b|c)     matches a string that has a followed by b or c (and captures b or c) -> Try it!a[bc]      same as previous, but without capturing b or c