CODEWITHSUNDEEP
javaregex
Dan
Dan

Reputation: 1033

Split String by Number regex

I am looking to split a string (keeping all groups) by a number value. For example datasource10 would give ["datasource","10"].

I've tried using:

String[] key = "datasource10".split("(?=\\d)");

However thats not returning "10", but rather ["datasource","1","0"]. How can I change it to return ["datasource","10"]?

Upvotes: 0

Views: 29

Answers (1)

Pshemo
Pshemo

Reputation: 124225

You can add a condition which will also require the left side to be a non-digit (\D). To do so you can use a look-behind like:

.split("(?<=\\D)(?=\\d)")

But current solution will split in a way foo123bar->foo 123bar since you are only splitting between non-digit|digit.

If you would also want to split between 123bar (digit|non-digit) simply reverse current regex and add it with OR operator like

.split("(?<=\\D)(?=\\d)|(?<=\\d)(?=\\D)")

Upvotes: 2

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