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Day 1

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Bas Dado
2018-12-01 17:13:04 +01:00
commit 2cd5fbcbf4
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39
src/main/kotlin/com/basdado/adventofcode/Day1.kt Normal file
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import java.nio.file.Files
import java.nio.file.Paths
import java.util.stream.Collectors
fun main() {
puzzle1()
puzzle2()
}
fun puzzle1() {
println(
Files.lines(Paths.get(Day1::class.java.getResource("/day/1/input.txt").toURI()))
.mapToLong { it.toLong() }
.sum())
}
fun puzzle2() {
val changes = Files.lines(Paths.get(Day1::class.java.getResource("/day/1/input.txt").toURI()))
.map { it.toLong() }
.collect(Collectors.toList<Long>())
val freqs = mutableSetOf(0L)
var freq = 0L
while(true) {
for (change in changes) {
freq += change
if (freqs.contains(freq)) {
println(freq)
return
}
freqs.add(freq)
}
}
}
class Day1

959
src/main/resources/day/1/input.txt Normal file
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