37 lines
702 B
Scala
37 lines
702 B
Scala
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package aoc
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package day01
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val dayNumber = "01"
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@main def part1: Unit =
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println(part1(loadInput(dayNumber)))
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@main def part2: Unit =
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println(part2(loadInput(dayNumber)))
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def part1(input: String): String =
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val Array(ls, rs) = input
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.split("\n")
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.map { case s"$left $right" =>
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Array(left.toInt, right.toInt)
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}
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.transpose
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ls.sorted
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.zip(rs.sorted)
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.map { case (left, right) =>
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Math.abs(right - left)
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}
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.sum
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.toString
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def part2(input: String): String =
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val Array(ls, rs) = input
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.split("\n")
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.map { case s"$left $right" =>
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Array(left.toInt, right.toInt)
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}
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.transpose
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ls.map(n => n * rs.count(_ == n)).sum.toString
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