38 lines
1.1 KiB
Plaintext
38 lines
1.1 KiB
Plaintext
object ABC_block_checker {
|
|
fun run() {
|
|
val blocks = arrayOf("BO", "XK", "DQ", "CP", "NA", "GT", "RE", "TG", "QD", "FS",
|
|
"JW", "HU", "VI", "AN", "OB", "ER", "FS", "LY", "PC", "ZM")
|
|
|
|
println("\"\": " + blocks.canMakeWord(""))
|
|
val words = arrayOf("A", "BARK", "book", "treat", "COMMON", "SQuAd", "CONFUSE")
|
|
for (w in words) println("$w: " + blocks.canMakeWord(w))
|
|
}
|
|
|
|
private fun Array<String>.swap(i: Int, j: Int) {
|
|
val tmp = this[i]
|
|
this[i] = this[j]
|
|
this[j] = tmp
|
|
}
|
|
|
|
private fun Array<String>.canMakeWord(word: String): Boolean {
|
|
if (word.isEmpty())
|
|
return true
|
|
|
|
val c = Character.toUpperCase(word.first())
|
|
var i = 0
|
|
forEach { b ->
|
|
if (b.first().toUpperCase() == c || b[1].toUpperCase() == c) {
|
|
swap(0, i)
|
|
if (drop(1).toTypedArray().canMakeWord(word.substring(1)))
|
|
return true
|
|
swap(0, i)
|
|
}
|
|
i++
|
|
}
|
|
|
|
return false
|
|
}
|
|
}
|
|
|
|
fun main(args: Array<String>) = ABC_block_checker.run()
|