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June 2018 Update

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Ingy döt Net 2018-06-22 20:57:24 +00:00
parent ba8067c3b7
commit 22f33d4004
5278 changed files with 84726 additions and 14379 deletions
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20
Task/Middle-three-digits/Kotlin/middle-three-digits.kotlin
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@ -1,14 +1,16 @@
fun middleThree(x: Int): Int? {
val s = Math.abs(x).toString()
when {
s.length < 3 -> return null // throw Exception("too short!")
s.length % 2 == 0 -> return null // throw Exception("even number of digits")
else -> return ((s.length / 2) - 1).let { s.substring(it, it + 3) }.toInt()
return when {
s.length < 3 -> null // throw Exception("too short!")
s.length % 2 == 0 -> null // throw Exception("even number of digits")
else -> ((s.length / 2) - 1).let { s.substring(it, it + 3) }.toInt()
}
}
println(middleThree(12345)) // 234
println(middleThree(1234)) // null
println(middleThree(1234567)) // 345
println(middleThree(123))// 123
println(middleThree(123555)) //null
fun main(args: Array<String>) {
println(middleThree(12345)) // 234
println(middleThree(1234)) // null
println(middleThree(1234567)) // 345
println(middleThree(123))// 123
println(middleThree(123555)) //null
}