How to use RegExp to check if string have at least two upper case letters but not one after another

Asked Jun 10 '17 at 13:44

Active Jun 10 '17 at 14:14

Viewed 39 times

I have a task to check a string value using RegExp (I MUST USE REGEXP, so pls don't post solutions without regexp) if it contains at least two upper case letters, at least two lower case letters and at least one number [0-9]. EDIT plus string length must be in between 5 and 15 characters (both 5 and 15 included).

I have this pattern: /[A-Z].{2,}[a-z].{2,}[0-9].+/i

But it doesn't work perfectly because it doesn't cover cases like if letters and numbers are not consecutive, one after another. Example:

"nN1nN" - will not pass the check

"nnN1N" - -||- etc.

Thanks in advance.

edited Jun 10 '17 at 14:14

asked Jun 10 '17 at 13:44

karlo1zg

2

why dont you check each condition separately in if else – Rahul Jun 10 '17 at 13:53
1

I think `/^(?=.*[A-Z][^A-Z]*[A-Z])(?=.*[a-z][^a-z]*[a-z])\D*\d/` will do. – Wiktor Stribiżew Jun 10 '17 at 13:55
@WiktorStribiżew Hi Wiktor, this pattern is working great, but I forgot to mention that I need to check for length to be between 5 and 15 characters (both included). Plus, can you give a bit of explanation of your pattern and can you modify your solution and paste it as an answer so I can accept it? – karlo1zg Jun 10 '17 at 14:10
See [here](https://regex101.com/r/aLQpqs/1). All expalantions are on the right. – Wiktor Stribiżew Jun 10 '17 at 14:16
@WiktorStribiżew thanks – karlo1zg Jun 10 '17 at 14:17

How to use RegExp to check if string have at least two upper case letters but not one after another

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