/
main.go
68 lines (49 loc) · 1.2 KB
/
main.go
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package main
import (
"fmt"
"strings"
"time"
"github.com/ErikThorsell/advent-of-code-go/util"
)
func part1(input []string) int {
res := 0
precedenceMap := make(map[string]int)
precedenceMap["+"] = 0
precedenceMap["*"] = 0
for _, row := range input {
elems := strings.Split(strings.ReplaceAll(row, " ", ""), "")
res += util.ShuntingYard(elems, precedenceMap)
}
return res
}
func part2(input []string) int {
res := 0
precedenceMap := make(map[string]int)
precedenceMap["+"] = 1
precedenceMap["*"] = 0
for _, row := range input {
elems := strings.Split(strings.ReplaceAll(row, " ", ""), "")
res += util.ShuntingYard(elems, precedenceMap)
}
return res
}
func main() {
rawInput := util.FetchInputForDay("2020", "18")
parsedInput := util.ParseInputByLine(rawInput)
fmt.Println("Done parsing input.")
fmt.Println()
// PART 1
s := time.Now()
ans1 := part1(parsedInput)
t := time.Now()
e := t.Sub(s)
fmt.Println("Answer for first question: ", ans1)
fmt.Println("First answer retrieved in: ", e)
fmt.Println()
s = time.Now()
ans2 := part2(parsedInput)
t = time.Now()
e = t.Sub(s)
fmt.Println("Answer for second question: ", ans2)
fmt.Println("Second answer retrieved in: ", e)
}