65 lines
1.2 KiB
Go
65 lines
1.2 KiB
Go
package main
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import (
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"bufio"
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"fmt"
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"os"
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"strconv"
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)
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func main() {
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// iterate over all IDs
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joltages := Decode("input.txt")
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var joltagessum int = 0
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for _, i := range joltages {
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var tensColumn int = 0
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var onesColumn int = 0
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for iteration, x := range i {
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num, err := strconv.Atoi(string(x))
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if err != nil {
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panic(err)
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}
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if tensColumn == 0 {
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tensColumn = num
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} else if num > tensColumn && iteration != len(i)-1 {
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tensColumn = num
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onesColumn = 0
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} else if num > onesColumn && onesColumn >= tensColumn {
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tensColumn = onesColumn
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onesColumn = num
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} else if num > onesColumn {
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onesColumn = num
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}
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}
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sum := tensColumn*10 + onesColumn
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fmt.Printf("joltage found for %s, %d%d %d\n", i, tensColumn, onesColumn, sum)
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joltagessum = joltagessum + sum
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}
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fmt.Println("total joltage sum", joltagessum)
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}
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func Decode(filename string) []string {
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f, err := os.Open(filename)
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if err != nil {
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panic(err)
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}
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defer f.Close()
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scanner := bufio.NewScanner(f)
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var joltages []string
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for scanner.Scan() {
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// extract joltage numbers into struct to go over
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joltages = append(joltages, scanner.Text())
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}
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return joltages
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}
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