40 lines
927 B
Kotlin
40 lines
927 B
Kotlin
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package main
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import java.io.File
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fun main() {
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var sum = 0
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File("../input.txt").forEachLine{
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var firstDigit = ""
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var lastDigit = ""
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for (c in replaceStrWithDigits(it)) {
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if (c.isDigit()) {
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lastDigit = c.toString()
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if (firstDigit == "") {
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firstDigit = c.toString()
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}
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}
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}
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sum += (firstDigit + lastDigit).toInt()
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}
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println(sum)
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}
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fun replaceStrWithDigits(line: String): String {
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var s = line
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var words = arrayOf("one", "two", "three", "four", "five", "six", "seven", "eight", "nine")
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var i = 0
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while (i < s.length) {
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for (w in words.indices) {
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if (s.slice(i..s.length-1).startsWith(words[w])) {
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s = s.replaceRange(i, i + 1, (w + 1).toString())
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break
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}
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}
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i += 1
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}
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return s
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}
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