Extract numbers from String Array

Question

I have a Array of Strings

scala> tokens
res34: Array[String] = Array(The, value, of, your, profile, is, 234.2., You, have, potential, to, gain, 8.3, more.)
         


        

Answer 1

Simply filter your array with regex

val numericRegex: String = "\\d+\\.\\d+"
tokens filter(_.matches(numericRegex))

Note that the 6'th value 232.2. is not a number. you must remove the last dot "." so it will be 232.2

If values include spaces than you have to trim them

tokens map (_.trim) filter (_.matches(numericRegex))
res28: Array[String] = Array(234.2, 8.3)