[TASK] Solved part 1

day01/day01.go

@@ -0,0 +1,79 @@
+package day01
+
+import (
+	"strings"
+	"unicode"
+)
+
+func Part1(input string) uint {
+	lines := strings.Split(input, "\n")
+	sum := uint(0)
+	for i := 0; i < len(lines); i++ {
+		line := lines[i]
+		for j := 0; j < len(line); j++ {
+			if unicode.IsNumber(rune(line[j])) {
+				sum = sum + uint(line[j]-'0')*10
+				break
+			}
+		}
+		for j := len(line) - 1; j >= 0; j-- {
+			if unicode.IsNumber(rune(line[j])) {
+				sum = sum + uint(line[j]-'0')
+				break
+			}
+		}
+	}
+
+	return sum
+}
+
+func Part2(input string) uint {
+	lines := strings.Split(input, "\n")
+	sum := uint(0)
+	for i := 0; i < len(lines); i++ {
+		line := lines[i]
+		for j := 0; j < len(line); j++ {
+			n, found := writtenNumberAt(line, j)
+			if found {
+				sum = sum + n*10
+				break
+			}
+		}
+		for j := len(line) - 1; j >= 0; j-- {
+			n, found := writtenNumberAt(line, j)
+			if found {
+				sum = sum + n
+				break
+			}
+		}
+	}
+
+	return sum
+}
+
+func writtenNumberAt(line string, i int) (n uint, found bool) {
+
+	if unicode.IsNumber(rune(line[i])) {
+		return uint(line[i] - '0'), true
+	} else if strings.HasPrefix(line[i:], "one") {
+		return 1, true
+	} else if strings.HasPrefix(line[i:], "two") {
+		return 2, true
+	} else if strings.HasPrefix(line[i:], "three") {
+		return 3, true
+	} else if strings.HasPrefix(line[i:], "four") {
+		return 4, true
+	} else if strings.HasPrefix(line[i:], "five") {
+		return 5, true
+	} else if strings.HasPrefix(line[i:], "six") {
+		return 6, true
+	} else if strings.HasPrefix(line[i:], "seven") {
+		return 7, true
+	} else if strings.HasPrefix(line[i:], "eight") {
+		return 8, true
+	} else if strings.HasPrefix(line[i:], "nine") {
+		return 9, true
+	} else {
+		return 0, false
+	}
+}