pgoultiaev/aoc2017

package main

import (
    "bufio"
    "fmt"
    "log"
    "os"
    "sort"
    "strings"

    "github.com/pgoultiaev/aoc2017/util"
)

func main() {
    file, err := os.Open("2.txt")
    if err != nil {
        log.Fatal(err)
    }
    defer file.Close()

    scanner := bufio.NewScanner(file)
    sum1 := 0
    sum2 := 0
    for scanner.Scan() {
        slicedString := strings.Split(scanner.Text(), "\t")

        slicedInts := util.ConvStringArrayToIntArray(slicedString)
        sort.Ints(slicedInts[:])
        sum1 += (slicedInts[len(slicedInts)-1] - slicedInts[0])
        sum2 += findDivisible(slicedInts)
    }

    fmt.Printf("part one: %d\n", sum1)
    fmt.Printf("part two: %d\n", sum2)
}

func findDivisible(ia []int) int {
    for i, e := range ia {
        for j, o := range ia {
            if j != i && e%o == 0 {
                return e / o
            }
        }
    }
    return 0
}