8000 Move 2024 day 17 part 2 reverse engineering to separate files · sim642/adventofcode@2b5b14b · GitHub
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Move 2024 day 17 part 2 reverse engineering to separate files
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5 files changed

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‎src/main/resources/eu/sim642/adventofcode2024/day17/day17_2.txt

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bst 4 // a
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bxl 1
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cdv 5 // b
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bxl 5
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bxc 5 // -
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adv 3
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out 5 // b
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jnz 0

‎src/main/resources/eu/sim642/adventofcode2024/day17/day17_3.txt

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do {
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b = a & 0b111
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b = b ^ 1
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c = a / (1 << b)
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b = b ^ 5
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b = b ^ c
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a = a / (1 << 3)
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output(b & 0b111)
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} while (a != 0)

‎src/main/resources/eu/sim642/adventofcode2024/day17/day17_4.txt

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do {
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b = a & 0b111
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b = b ^ 1
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c = a >> b
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b = b ^ 5
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b = b ^ c
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a = a >> 3
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output(b & 0b111)
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} while (a != 0)

‎src/main/scala/eu/sim642/adventofcode2024/Day17.scala

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@@ -128,22 +128,7 @@ object Day17 {
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lazy val input: String = scala.io.Source.fromInputStream(getClass.getResourceAsStream("day17.txt")).mkString.trim
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def main(args: Array[String]): Unit = {
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/*var a: Int = 30344604
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var b: Int = 0
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var c: Int = 0
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while (a != 0) {
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b = a & 0b111
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b = b ^ 1
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c = a >> b
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b = b ^ 5
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b = b ^ c
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a = a >> 3
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print(b & 0b111)
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print(',')
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}*/
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//println(runOutput(parseInput(input)))
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println(runOutput(parseInput(input)))
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println(findQuineA3(parseInput(input)))
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// part 2: 164540892147389 - correct

‎src/test/scala/eu/sim642/adventofcode2024/Day17Test.scala

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@@ -48,28 +48,4 @@ class Day17Test extends AnyFunSuite {
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test("Part 2 examples") {
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assert(findQuineA(parseInput(exampleInput3)) == 117440)
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}
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/*
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do {
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b = a & 0b111
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b = b ^ 1
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c = a / (1 << b)
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b = b ^ 5
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b = b ^ c
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a = a / (1 << 3)
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output(b & 0b111)
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} while (a != 0)
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*/
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/*
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do {
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b = a & 0b111
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b = b ^ 1
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c = a >> b
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b = b ^ 5
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b = b ^ c
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a = a >> 3
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output(b & 0b111)
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} while (a != 0)
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*/
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}

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