@@ -45,6 +45,21 @@ object Day24 {
4545 })
4646 }
4747
48+ def swap (circuit : Circuit , name1 : String , name2 : String ): Circuit =
49+ circuit + (name1 -> circuit(name2)) + (name2 -> circuit(name1))
50+ 51+ def changeInput (circuit : Circuit , prefix : String , value : Long ): Circuit = {
52+ val (a, b) = circuit.keys
53+ .filter(_.startsWith(prefix))
54+ .toSeq
55+ .sorted
56+ .foldLeft((circuit, value))({ case ((circuit, value), prefixName) =>
57+ (circuit + (prefixName -> Wire .Input ((value & 1 ) == 1L )), value >> 1 )
58+ })
59+ assert(b == 0 )
60+ a
61+ }
62+ 4863 def parseInput (s : String ): (String , Wire .Input ) = s match {
4964 case s " $name: 0 " => name -> Wire .Input (false )
5065 case s " $name: 1 " => name -> Wire .Input (true )
@@ -63,9 +78,35 @@ object Day24 {
6378 inputMap ++ gateMap
6479 }
6580
81+ def printCircuitDot (circuit : Circuit ): Unit = {
82+ println(" digraph circuit {"
83+ for ((name, wire) <- circuit) {
84+ wire match {
85+ case Wire .Input (value) =>
86+ println(s " $name; " )
87+ case Wire .Gate (lhs, op, rhs) =>
88+ println(s " $name [label= \" $name$op\" ]; " )
89+ println(s " $lhs -> $name; " )
90+ println(s " $rhs -> $name; " )
91+ }
92+ }
93+ println(" }"
94+ }
95+ 6696 lazy val input : String = scala.io.Source .fromInputStream(getClass.getResourceAsStream(" day24.txt"
6797
6898 def main (args : Array [String ]): Unit = {
69- println(getZValue(parseCircuit(input)))
99+ val circuit = parseCircuit(input)
100+ println(getZValue(circuit))
101+ val circuit2 = swap(swap(swap(swap(circuit, " z21" " nhn" " tvb" " khg" " z33" " gst" " z12" " vdc"
102+ printCircuitDot(circuit2)
103+ println(getZValue(circuit2))
104+ println(" 51401618891888"
105+ 106+ val circuit3 = changeInput(changeInput(circuit2, " x" 0 ), " asdasd" 0 )
107+ println(getZValue(circuit3))
108+ 109+ println(Seq (" z21" " nhn" " tvb" " khg" " z33" " gst" " z12" " vdc" " ,"
110+ // part 2: gst,khg,nhn,tvb,vdc,z12,z21,z33 - correct
70111 }
71112}
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