scala-regex.scala

scala-regex.scala

val lines = Array(
  "CA94401,CA1,02,CB2,03,K1,Y2,10,20",
  "CA94402,CA2,03,CB3,043,L1,Z2,10,20")

lines.filter(line => line.contains("CA94401"))

val kv = lines.map(
  line =>
    (line.split(",")(0),
    line.split(",").filter(str => str.matches("^[A-Za-z][0-9]*$")).mkString(","))) // (k,v)
    //output kv: Array[(String, String)] = Array((CA94401,K1,Y2), (CA94402,L1,Z2))
    
    


"CA1".matches("^[A-Za-z]+[0-9].$")
"CA1".matches("CA1")
val regex = "^[A-Za-z][0-9]*$".r
val tokens = List("abc", "ab12", "12", "xy1","X1","y12")
tokens.filter(token => regex.pattern.matcher(token).matches()) // res3: List[String] = List(X1, y12)

"abc,ab12,12,xy1,X1,y12".split(",").filter(str => str.matches("^[A-Za-z][0-9]*$")) //res4: Array[String] = Array(X1, y12)