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https://github.com/Threnklyn/advent-of-code-go.git
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alexchao26
35 lines
525 B
Go
35 lines
525 B
Go
package main
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import (
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"github.com/alexchao26/advent-of-code-go/util"
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"fmt"
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"strconv"
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"strings"
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)
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func main() {
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input := util.ReadFile("../input.txt")
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sli := strings.Split(input, "\n")
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var sum int
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seen := make(map[int]bool)
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for {
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for _, instruction := range sli {
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sign := instruction[:1]
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num, _ := strconv.Atoi(instruction[1:])
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if sign == "+" {
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sum += num
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} else {
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sum -= num
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}
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if seen[sum] {
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fmt.Println("Number seen twice is:", sum)
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return
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}
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seen[sum] = true
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}
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}
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}
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