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36 lines
493 B
Go
36 lines
493 B
Go
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package two
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import (
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"bufio"
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"io"
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"strconv"
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"strings"
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)
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func parseLines(r io.Reader) ([]int, error) {
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secrets := []int{}
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scanner := bufio.NewScanner(r)
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for scanner.Scan() {
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secrets = append(secrets, mustConv(strings.TrimSpace(scanner.Text())))
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}
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if err := scanner.Err(); err != nil {
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return nil, err
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}
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return secrets, nil
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}
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func mustConv(s string) int {
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n, err := strconv.Atoi(s)
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if err != nil {
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panic(err)
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}
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return n
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}
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func lastDigit(n int) int {
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return n % 10
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}
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