Kotlin – add a single space between string and number

I have the following texts. I need to add a single space between the string and numbers.

Text1 -> Text 1

Text10 -> Text 10

Kotlin2 -> Kotlin 2

I used the following code, but it does not work.

fun addSpace(text: String): String {
   return text.split("\\s|\\D".toRegex()).joinToString(separator = " ") { it  }
}

It return only the number.

>Solution :

You can just replace any occurrence of a string of digits with a space followed by those digits:

fun addSpace(text: String) = text.replace(Regex("\\d+" ), " \$0")

(The $ is escaped so that the Kotlin compiler doesn’t treat it as interpolation.)