Regex to find three or more repeated number except 999 in Java-CodePudding

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Regex to find three or more repeated number except 999 in Java

Time：06-25

Need help to stop user from entering phone number with three or more repeated digits except 999.

Phone number could be 10 digit to 25 digit.

Bad Input:

Exception:

I tried --> \b(\d)\3 \b but looks that is not right.

CodePudding user response：

Have a try with

^(?:([0-8])(?!\1\1)|9){10,25}$