Regex to match 4 repeated letters in string using java pattern

Posted by Anonymous user on Stack Overflow See other posts from Stack Overflow or by Anonymous user
Published on 2010-04-12T14:26:28Z Indexed on 2010/04/12 14:33 UTC
Read the original article Hit count: 269

Filed under:

repeated

|

characters

|

regex

|

java

i want to match something like aaaa, aaaad, adjjjjk. Something like this ([a-z])\1+ was used to match the repeated characters but i am not able to figure this out for 4 letters.

© Stack Overflow or respective owner

Related posts about repeated

Excel - check if row contains ANY value *more than once*

as seen on Stack Overflow - Search for 'Stack Overflow'
I am doing data analysis and sometimes I need to check and to make sure each row in excel does not have any repeated value. I hope that there is a formula where each time if there's a repeated value in the same row, the value will be highlighted and it doesn't matter what value it is, as long as it's… >>> More
Removing duplicates without overriding hash method

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello, I have a List which contains a list of objects and I want to remove from this list all the elements which have the same values in two of their attributes. I had though about doing something like this: List<Class1> myList; .... Set<Class1> mySet = new HashSet<Class1>(); mySet… >>> More
text-area-text-to-be-split-with-conditions repeated

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a text area wherein i have limited the user from entering more that 15 characters in one line as I want to get the free flow text separated into substrings of max limit 15 characters and assign each line an order number. This is what I was doing in my java class: int interval = 15; … >>> More
Cost of using repeated parameters

as seen on Stack Overflow - Search for 'Stack Overflow'
I consider refactoring few method signatures that currently take parameter of type List or Set of concrete classes --List[Foo]-- to use repeated parameters instead: Foo*. This would allow me to use the same method name and overload it based on the parameter type. This was not possible using List or… >>> More
Repeated Squaring - Matrix Multiplication using NEWMAT

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm trying to use the repeated squaring algorithm (using recursion) to perform matrix exponentiation. I've included header files from the NEWMAT library instead of using arrays. The original matrix has elements in the range (-5,5), all numbers being of type float. # include "C:\User\newmat10\newmat… >>> More

Related posts about characters

Needed list of special characters classification with respective characters

as seen on Stack Overflow - Search for 'Stack Overflow'
I am working on one web application , It's related to machine translation support i.e. which takes source text for translation and translated in to user specified language Currently it's in unit testing phase. Here, i want to check that, whether my machine translation feature is fully working for… >>> More
how to match all language characters like english, greek, chinese except the special characters

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a display name field which i have to validate using JavaScript regex. We have to match all language characters like chinese, german, spanish in addition to english language characters except special characters like *(). I am struck on how to match those non-latin characters. Any… >>> More
Convert text from English characters to Hebrew characters

as seen on Stack Overflow - Search for 'Stack Overflow'
Using C#, when a user types a text in a normal textbox, how can you see the Hebrew equivalent of that text? I want to use this feature on a data entry form, when the secretary puts in the customer name using English characters to have it converted automatically in another textbox to the hebrew representation… >>> More
What characters can cause "The request line contained invalid characters following the protocol stri

as seen on Stack Overflow - Search for 'Stack Overflow'
When using PHP file_get_contents(), What characters will cause the following error to appear: "The request line contained invalid characters following the protocol string." >>> More
Generate unique random alphanumeric characters that are 7 characters long

as seen on Stack Overflow - Search for 'Stack Overflow'
It need not be meaningful words - more like random password generation, but the catch is - they should be unique. I will be using this for some kind of package / product code. Which is the best method available? :) >>> More