Crazy 8s Code Golf Challenge

https://codegolf.stackexchange.com/questions/104356/crazy-8s-code-golf/104482#104482

Create a program that prints all whole numbers inclusively between an interval (a, b), and replaces multiples of 8 in the sequence with random (uniformly distributed, independent of other characters), non-numeric, non-whitespace, printable ASCII characters.

Assume 0 < a < b in all cases.

If the number has more than 1 digit, make sure the amount of characters in the replacement matches!

Examples:

(1, 16) -> 1 2 3 4 5 6 7 $ 9 10 11 12 13 14 15 n@

(115, 123) -> 115, 116, 117, 118, 119, :F<, 121, 122, 123

(1, 3) -> 1 2 3

Non-Examples:

(1, 16) -> 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

(115, 123) -> 115 116 117 118 119 $ 121 122 123

Improved Functional style code

Scala, 198 bytes

  def S(a: Int, b: Int)={
    val c=(33 to 47)++(58 to 126)
    val r = (a to b).toStream.map {case x if x%8==0=>c(Random.nextInt(c.length)).toChar.toString
      case x => String.valueOf(x)}
    r}

Try it online!