might be making a mistake starting 2018...

2019/day06/part1/main.go

@@ -0,0 +1,54 @@
+package main
+
+import (
+	"adventofcode/util"
+	"fmt"
+	"strings"
+)
+
+func main() {
+	input := util.ReadFile("../input.txt")
+
+	// split it into a slice of all strings
+	inputSliced := strings.Split(input, ",")
+
+	// send the input to a helper function that will return a map {planetName string: planetItOrbits string}
+	mapOfOrbits := makeGraphDependencyList(inputSliced)
+
+	result := 0
+
+	// don't care about outer planet value
+	for _, innerPlanet := range mapOfOrbits {
+		result += recurseToCOM(mapOfOrbits, innerPlanet)
+	}
+	fmt.Println(result)
+}
+
+func makeGraphDependencyList(inputSlice []string) map[string]string {
+	resultMap := make(map[string]string)
+	for _, v := range inputSlice {
+		slicedPlanets := strings.Split(v, ")")
+		inner, outer := slicedPlanets[0], slicedPlanets[1]
+		// set the key-value pair on the map/"object"
+		resultMap[outer] = inner
+	}
+
+	return resultMap
+}
+
+func recurseToCOM(mapOfOrbits map[string]string, planet string) int {
+	// start the result at one because triggering this function is using the outerPlanet
+	// and needs to include that initial orbit from innerPlanet to outerPlanet
+	result := 1
+	for {
+		planetString, ok := mapOfOrbits[planet]
+		if ok == true {
+			result++
+			planet = planetString
+		} else {
+			break
+		}
+	}
+
+	return result
+}