34 lines
930 B
Kotlin
34 lines
930 B
Kotlin
// version 1.1.0
|
|
|
|
fun isCusip(s: String): Boolean {
|
|
if (s.length != 9) return false
|
|
var sum = 0
|
|
for (i in 0..7) {
|
|
val c = s[i]
|
|
var v = when (c) {
|
|
in '0'..'9' -> c.toInt() - 48
|
|
in 'A'..'Z' -> c.toInt() - 55 // lower case letters apparently invalid
|
|
'*' -> 36
|
|
'@' -> 37
|
|
'#' -> 38
|
|
else -> return false
|
|
}
|
|
if (i % 2 == 1) v *= 2 // check if odd as using 0-based indexing
|
|
sum += v / 10 + v % 10
|
|
}
|
|
return s[8].toInt() - 48 == (10 - (sum % 10)) % 10
|
|
}
|
|
|
|
fun main(args: Array<String>) {
|
|
val candidates = listOf(
|
|
"037833100",
|
|
"17275R102",
|
|
"38259P508",
|
|
"594918104",
|
|
"68389X106",
|
|
"68389X105"
|
|
)
|
|
for (candidate in candidates)
|
|
println("$candidate -> ${if(isCusip(candidate)) "correct" else "incorrect"}")
|
|
}
|