CODEWITHSUNDEEP
regex
rdt89
rdt89

Reputation: 11

Regex with characters and numbers in no particular order (but limited to 10 numbers max)

So i have a string (with spaces):

John Doe

That can be mixed with up to 10 numbers

John Doe 123456789

In no particular order:

1234john Doe567890

I've tried mixing chars, spaces and numbers like this:

([A-Za-z ])([0-9]){10}

But i doesn't hit the target

How can i write a Regex to validate that?

Upvotes: 0

Views: 258

Answers (2)

user557597
user557597

Reputation:

Try this 

^(?=(?:\D*\d){0,10}\D*$)

Explained: 

 ^                   # Beginning of string, BOS

 # Lookahead assertion
 (?=
      # Note this group is designed 
      # so that it is the only place
      # a digit can exist.

      (?:                 # Group
           \D*                 #  Optional, any amount of non-digits
           \d                  #  Required, a single digit
      ){0,10}             # End group, do 0 to 10 times

      # Example:
      #   - If this group runs 0 times, no digits were in the string.
      #   - If this group runs 4 times, 4 digits are in the string.
      #   - Therefore, min digits = 0, max digits = 10

      \D*                 # Finally, and optionally, any amount of non-digits
      $                   # End of string, EOS
 )

Upvotes: 2

Wiktor Stribiżew
Wiktor Stribiżew

Reputation: 626738

You may use

^(?:[A-Za-z ]*[0-9]){0,10}[A-Za-z ]*$

Details

  • ^ - start of string
  • (?:[A-Za-z ]*[0-9]){0,10} - zero to ten occurrences of
    • [A-Za-z ]* - 0 or more spaces or letters
    • [0-9] - a digit
  • [A-Za-z ]* - 0 or more spaces or letters
  • $ - end of string.

If there must be at least 1 digit, use

^(?:[A-Za-z ]*[0-9]){1,10}[A-Za-z ]*$
                     ^

Upvotes: 0

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