AoC2020/day9/day9.go

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2020-12-09 18:14:44 +01:00
package main
import (
"AoC2020/helper"
"fmt"
"os"
)
var pointer int
var band []int
func main() {
args := os.Args[1:]
input, err := helper.GetInput(args[0])
if err != nil {
fmt.Println(err)
}
numbers, err := helper.MapToNumber(input)
if err != nil {
fmt.Println(err)
}
fmt.Printf("%v \n",numbers)
band = numbers
breaker := part1(25)
fmt.Println(breaker)
fmt.Print(part2(breaker))
}
func part1(preambleLen int) int{
pointer = preambleLen
isValid := true
for isValid {
_,_,err := helper.FindAddendsForSum(band[pointer-preambleLen:pointer],band[pointer])
if err != nil {
return band[pointer]
isValid = false
}
pointer++
}
return 0
}
func part2(breaker int) int{
for p1 := 0; p1 < len(band); p1++ {
for p2 := p1 + 1; p2 < len(band); p2++ {
array := make([]int, len(band[p1:p2]))
copy(array,band[p1:p2])
sumArray := 0
for _,value := range array {
sumArray += value
}
if sumArray == breaker {
fmt.Printf("%v \n" ,array)
var max int
var min int
for i, val := range array {
if i==0 || val < min {
min = val
}
if i==0 || val > max {
max = val
}
}
fmt.Printf("%d , %d \n" ,min, max)
return min + max
}
}
}
return 0
}
func run(preambleLen int) {
}