Source Code : Quantifiers for Matching a Recurring Character

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Quantifiers for Matching a Recurring Character

 
Symbol         Description                                      Example
 
*              Zero or more instances                           a*
 
+              One or more instances                            a+
 
?              Zero or one instance                             a?
 
{n}            n instances                                      a{3}
 
{n,}           At least n instances                             a{3,}
 
{,n}           Up to n instances                                a{,2}
 
{n1, n2}       At least n1 instances, no more than n2 instances a{1,2}
  
  

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