[FIXED] Regex to limit special character between range

Issue

I want to limit special character to maximum value. Like I want the regex to limit at most 3 special character. I am using following regex, but its not working for me. :

(^(?:[^$@!%*?&\n]*[$@!%*?&]){0-2}[^$@!%*?&\n]*$)

Solution

You may use this regex to match max 3 special characters:

^(?:[^$@!%*?&]*[$@!%*?&]){0,3}[^$@!%*?&]*$

RegEx Demo

RegEx Details:

• ^: Start
• (?:: Start non-capture group
  • [^$@!%*?&]*: Match 0 or more of any characters that are not inside [...]
  • [$@!%*?&]: Match one of these characters inside [...]
• ){0,3}: End non-capture group. Repeat this group 0 ot 3 times
• [^$@!%*?&]*: Match 0 or more of any characters that are not inside [...]
• $: End

Answered By - anubhava
Answer Checked By - David Goodson (JavaFixing Volunteer)