AdventOfCode2022/10/main.go
2022-12-17 17:08:09 -05:00

112 lines
2.1 KiB
Go

package main
import (
"bufio"
"fmt"
"os"
"strconv"
"strings"
"time"
)
func mustAtoi(line string) int {
i, _ := strconv.Atoi(line)
return i
}
func main() {
start := time.Now()
partOne()
duration := time.Since(start)
partTwo()
duration2 := time.Since(start)
fmt.Printf("p1: %s, p2: %s\n", duration, duration2-duration)
}
func makeScanner(test bool) *bufio.Scanner {
var f *os.File
if test {
f, _ = os.Open("inputs/testinput")
} else {
f, _ = os.Open("inputs/input")
}
reader := bufio.NewReader(f)
return bufio.NewScanner(reader)
}
func partOne() {
scanner := makeScanner(false)
register := 1
cycleCount := 0
signalStrength := 0
for scanner.Scan() {
line := scanner.Text()
switch {
case line == "noop":
cycleCount++
if cycleCount%40 == 20 {
signalStrength += (cycleCount) * register
}
default:
s := strings.Split(line, " ")
x := mustAtoi(s[1])
cycleCount++
if cycleCount%40 == 20 {
signalStrength += (cycleCount) * register
}
cycleCount++
if cycleCount%40 == 20 {
signalStrength += (cycleCount) * register
}
register += x
}
}
fmt.Println(signalStrength)
}
func partTwo() {
scanner := makeScanner(false)
screen := make([]string, 241)
register := 1
cycleCount := 0
for scanner.Scan() {
line := scanner.Text()
switch {
case line == "noop":
if register == cycleCount%40 || register-1 == cycleCount%40 || register+1 == cycleCount%40 {
screen[cycleCount] = "#"
} else {
screen[cycleCount] = "."
}
cycleCount++
default:
s := strings.Split(line, " ")
x := mustAtoi(s[1])
if register == cycleCount%40 || register-1 == cycleCount%40 || register+1 == cycleCount%40 {
screen[cycleCount] = "#"
} else {
screen[cycleCount] = "."
}
cycleCount++
if register == cycleCount%40 || register-1 == cycleCount%40 || register+1 == cycleCount%40 {
screen[cycleCount] = "#"
} else {
screen[cycleCount] = "."
}
cycleCount++
register += x
}
}
fmt.Println(screen[1:40])
fmt.Println(screen[41:80])
fmt.Println(screen[81:120])
fmt.Println(screen[121:160])
fmt.Println(screen[161:200])
fmt.Println(screen[201:240])
}