21 lines
578 B
Nim
21 lines
578 B
Nim
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import std/[re, strutils]
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var res = 0
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var valid_digits = "one,two,three,four,five,six,seven,eight,nine".split(",")
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var digits_rx = re("\\d|" & valid_digits.join("|"))
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proc parseDigit(s: string): int =
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try:
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result = parseInt(s)
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except ValueError:
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result = valid_digits.find(s) + 1
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for line in readFile("input_01.txt").splitLines:
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if line.strip.len > 0:
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var digits = findAll(line, digits_rx)
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var number = parseDigit(digits[0]) * 10 + parseDigit(digits[^1])
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res += number
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#echo $digits, $number
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echo "Result: ", $res
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