24 lines
543 B
Scala
24 lines
543 B
Scala
package day01
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import kamlib.{Reader, Wrapper}
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class Day1 {
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/** Find fuel needed */
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def solveP1(input: List[Int]): Int =
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input.foldLeft (0) {(acc, i) => acc + (i/3-2)}
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/** Find fuel needed and recursive fuel */
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def solveP2(input: List[Int]): Int =
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{
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@scala.annotation.tailrec
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def findRecursiveFuel(fuel: Int, acc: Int): Int =
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{
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if (fuel <= 0) acc
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else findRecursiveFuel((fuel/3)-2, fuel+acc)
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}
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input.foldLeft (0) { (acc, i) => acc + findRecursiveFuel((i/3)-2, 0)}
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}
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}
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