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package aoc23
import (
"io"
"testing"
)
func findDigits(text string, parseWords bool) []int {
words := []string{"one", "two", "three", "four", "five", "six", "seven", "eight", "nine"}
var ints []int
buf := ""
for _, c := range text {
if isDigit(c) {
n := requireInt(string(c))
ints = append(ints, n)
} else if parseWords {
buf += string(c)
for i, w := range words {
if len(buf) >= len(w) && buf[len(buf)-len(w):] == w {
ints = append(ints, i+1)
break
}
}
}
}
return ints
}
func sumCalibrations(r io.Reader, parseWords bool) int {
values := parseLines(r, func(s string) []int { return findDigits(s, parseWords) })
return sum(transform(values, func(ints []int) int { return (ints[0] * 10) + ints[len(ints)-1] }))
}
func TestDay01(t *testing.T) {
example := `
1abc2
pqr3stu8vwx
a1b2c3d4e5f
treb7uchet
`
assert(t, 142, run(partial(sumCalibrations, false), inputString(example)))
assert(t, 55488, run(partial(sumCalibrations, false), inputFile(1)))
example2 := `
two1nine
eightwothree
abcone2threexyz
xtwone3four
4nineeightseven2
zoneight234
7pqrstsixteen
`
assert(t, 281, run(partial(sumCalibrations, true), inputString(example2)))
assert(t, 55614, run(partial(sumCalibrations, true), inputFile(1)))
}
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