Generate a list of powers of two in Kotlin

powers_of_two.kt

// Kotlin solution

fun powers_of_two(N:Int):MutableList<Long> {
  /*
    This function generates a tactical N set of numbers made of powers of 2
    and the remaining N-30 numbers will be the last N numbers before 10**9 inclusive.

    As N is always 100, this fuction is always performed without problems
   */
  var A = mutableListOf<Long>() // Open empty list
  // Append first 30 powers of two
  for (t in 0..29) {
        val base = 2
        var exponent = t
        var result =  Math.pow(base.toDouble(), exponent.toDouble())
        A.add(result.toLong())
  }
  // Append the other 70 garbage numbers (in this case the last 70 allowed)
  for (t in 0..N-31) {
        val base = 10
        val exponent = 9
        val max_value = Math.pow(base.toDouble(), exponent.toDouble())
        A.add(max_value.toLong()-t)
  }
  return A
}