2023/01: leodev, part 1, part 2 (#17)

2023/1/calibration-part1.input

@@ -0,0 +1,4 @@
+1abc2
+pqr3stu8vwx
+a1b2c3d4e5f
+treb7uchet

2023/1/calibration-part2.input

@@ -0,0 +1,7 @@
+two1nine
+eightwothree
+abcone2threexyz
+xtwone3four
+4nineeightseven2
+zoneight234
+7pqrstsixteen

2023/1/leodev.v

@@ -0,0 +1,58 @@
+import os { read_file }
+
+fn main() {
+	inputs_part1 := read_file('calibration-part1.input')!.split_into_lines()
+	println(part1(inputs_part1))
+	inputs_part2 := read_file('calibration-part2.input')!.split_into_lines()
+	println(part2(inputs_part2))
+}
+
+fn part1(inputs []string) int {
+	mut sum := 0
+	for line in inputs {
+		mut first := 0
+		mut last := 0
+		for c in line {
+			if c > `0` && c <= `9` {
+				if first == 0 {
+					first = c - u8(`0`)
+				}
+				last = c - u8(`0`)
+			}
+		}
+		sum += first * 10 + last
+	}
+	return sum
+}
+
+fn part2(inputs []string) int {
+	mut sum := 0
+	replacers := ['1', 'one', '2', 'two', '3', 'three', '4', 'four', '5', 'five', '6', 'six', '7',
+		'seven', '8', 'eight', '9', 'nine']
+	values := ['one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight', 'nine']
+	for old_line in inputs {
+		line := old_line.replace_each(replacers)
+		reversed := line.reverse()
+
+		mut first := 0
+		mut first_index := 999
+		mut last := 0
+		mut last_index := 999
+		for idx, value in values {
+			if front_index := line.index(value) {
+				if front_index < first_index {
+					first = idx + 1
+					first_index = front_index
+				}
+			}
+			if back_index := reversed.index(value.reverse()) {
+				if back_index < last_index {
+					last = idx + 1
+					last_index = back_index
+				}
+			}
+		}
+		sum += first * 10 + last
+	}
+	return sum
+}

known_outputs/2023/1/leodev.out

@@ -0,0 +1,2 @@
+142
+281