Syncing to desktop

2019-12-08 21:51:43 -06:00
parent 930491c840
commit 5b5e519ddf
9 changed files with 202 additions and 4 deletions
--- a/2019/day07/main.go
+++ b/2019/day07/main.go
@@ -0,0 +1,135 @@
+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+	"strings"
+	"time"
+
+	intcode "git.bullercodeworks.com/brian/adventofcode/2019/intcode-processor"
+	helpers "git.bullercodeworks.com/brian/adventofcode/helpers"
+)
+
+var a1, a2, a3, a4, a5 *intcode.Program
+
+func main() {
+	progFileName := "input"
+	if len(os.Args) > 1 {
+		progFileName = os.Args[1]
+	}
+	dat, err := ioutil.ReadFile(progFileName)
+	if err != nil {
+		fmt.Println("Error reading program file:", err.Error())
+		os.Exit(1)
+	}
+	var prog []int
+	stringDat := strings.TrimSpace(string(dat))
+	for _, v := range strings.Split(stringDat, ",") {
+		prog = append(prog, helpers.Atoi(v))
+	}
+
+	// part1(prog)
+	part2(prog)
+}
+
+func part1(prog []int) {
+	allPerms := helpers.IntPermutations([]int{0, 1, 2, 3, 4})
+	var bestPerm []int
+	max := 0
+	for k := range allPerms {
+		a1 = intcode.NewProgram(prog)
+		go a1.Run()
+		a2 = intcode.NewProgram(prog)
+		go a2.Run()
+		a3 = intcode.NewProgram(prog)
+		go a3.Run()
+		a4 = intcode.NewProgram(prog)
+		go a4.Run()
+		a5 = intcode.NewProgram(prog)
+		go a5.Run()
+
+		fmt.Print(allPerms[k], ": ")
+		wrk := pt1RunWithPhaseSettings(allPerms[k])
+		fmt.Println(wrk)
+		if wrk > max {
+			max = wrk
+			bestPerm = allPerms[k]
+		}
+	}
+	fmt.Println("BEST: ", bestPerm, max)
+}
+
+func pt1RunWithPhaseSettings(settings []int) int {
+	go func() {
+		a1.Input(settings[0])
+		a1.Input(0)
+		a2.Input(settings[1])
+		a2.Input(a1.Output())
+		a3.Input(settings[2])
+		a3.Input(a2.Output())
+		a4.Input(settings[3])
+		a4.Input(a3.Output())
+		a5.Input(settings[4])
+		a5.Input(a4.Output())
+	}()
+	for !a5.NeedsOutput() {
+		time.Sleep(1)
+	}
+	return a5.Output()
+}
+
+func part2(prog []int) {
+	allPerms := helpers.IntPermutations([]int{5, 6, 7, 8, 9})
+	var bestPerm []int
+	max := 0
+	for k := range allPerms {
+		a1 = intcode.NewProgram(prog)
+		go a1.Run()
+		a2 = intcode.NewProgram(prog)
+		go a2.Run()
+		a3 = intcode.NewProgram(prog)
+		go a3.Run()
+		a4 = intcode.NewProgram(prog)
+		go a4.Run()
+		a5 = intcode.NewProgram(prog)
+		go a5.Run()
+
+		fmt.Print(allPerms[k], ": ")
+		wrk := pt2RunWithPhaseSettings(allPerms[k])
+		fmt.Println(wrk)
+		if wrk > max {
+			max = wrk
+			bestPerm = allPerms[k]
+		}
+	}
+	fmt.Println("BEST: ", bestPerm, max)
+}
+
+func pt2RunWithPhaseSettings(settings []int) int {
+	go func() {
+		a1.Input(settings[0])
+		a2.Input(settings[1])
+		a3.Input(settings[2])
+		a4.Input(settings[3])
+		a5.Input(settings[4])
+		a1.Input(0)
+		for {
+			a2.Input(a1.Output())
+			a3.Input(a2.Output())
+			a4.Input(a3.Output())
+			a5.Input(a4.Output())
+			for !a5.NeedsOutput() {
+				time.Sleep(1)
+			}
+			if a5.State() == intcode.RET_DONE {
+				break
+			}
+			a1.Input(a5.Output())
+		}
+	}()
+	for a5.State() != intcode.RET_DONE && !a5.NeedsOutput() {
+		time.Sleep(1)
+	}
+	return a5.Output()
+}