27 lines
883 B
Kotlin
27 lines
883 B
Kotlin
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import java.io.File
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import java.io.InputStream
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fun main(args: Array<String>) {
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val inputStream = File("input").inputStream()
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val inputLines = inputStream.bufferedReader().use { it.readText() }.split("\n")
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var map: HashMap<Char, HashSet<Char>> = HashMap()
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for (line in inputLines) {
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val step = line[36]
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val dep = line[5]
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// Make sure values that are only referenced as dependencies
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// (i. e. the first step in our chain) are also added to the set.
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map.getOrPut(dep, { HashSet<Char>() })
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val currentDeps = map.getOrPut(step, { HashSet<Char>() })
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currentDeps.add(dep)
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}
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for (entry in map) {
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println(entry)
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}
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while (map.size > 0) {
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val candidatesForNext = map.entries.map{a -> Pair(a.key, a.value.size)}//.map{e -> Pair(e.1, e.2.size()}
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println(candidatesForNext)
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}
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}
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