Trying to add new line after end of each sentence:

I want to remove this patterns in the text:

I have this regex which checks if the password has one number at least.

I need a RegExp to test strings that should consist of the valid whole decimal numbers including zero (0, 1, 12, 123, but not 00 or 0123) mixed with a special character (such as x) in free occurrences:

I have an input field. I need the input to have the following format: AC-123456789
When I input the characters in the field, after the second character I want the system to add the hyphen automatically just once. The first group of characters has to be a specific letter for the first character and any letter or number for the second character. The second group can only be numbers. If I want to delete using backspace, I should be able to delete also the hyphen.
So far I have:

I have an input field. I need the input to have the following format: AC-123456789
When I input the characters in the field, after the second character I want the system to add the hyphen automatically just once. The first group of characters has to be a specific letter for the first character and any letter or number for the second character. The second group can only be numbers. If I want to delete using backspace, I should be able to delete also the hyphen.
So far I have:

Closed 20 mins ago.

I have a string:

I have a text with special cases I must care about when I want to split it into an array of sentences.

I have a text with special cases I must care about when I want to split it into an array of sentences.