working on day 06

06/main.go

@@ -0,0 +1,77 @@
+package main
+
+import (
+	"fmt"
+	"strings"
+
+	"git.z1glr.de/advent-of-code-2025/pkg/aoc"
+)
+
+func do(test bool) int {
+	inputRows := aoc.ReadFileRows(test)
+
+	operators := strings.Fields(inputRows[len(inputRows)-1])
+
+	tdNumberStrings := make([]byte, len(inputRows[0]))
+
+	numbers := make([][]int, len(inputRows)-1)
+	for ii, row := range inputRows[:len(inputRows)-1] {
+		numberStrings := strings.Fields(row)
+
+		numbers[ii] = make([]int, len(numberStrings))
+
+		for jj, number := range numberStrings {
+			numbers[ii][jj] = aoc.ParseInt(number)
+		}
+	}
+
+	for ii := range len(inputRows[0]) {
+		for jj := 0; jj < len(inputRows)-1; jj++ {
+			tdNumberStrings[ii] = inputRows[ii][jj]
+		}
+	}
+
+	tdNumbers := make([][]int, len(operators))
+
+	currentOperation := 0
+	for _, number := range tdNumberStrings {
+		if strings.TrimSpace(string(number)) == "" {
+			currentOperation++
+		} else {
+			tdNumbers[currentOperation] = append(tdNumbers[currentOperation], aoc.ParseInt(string(number)))
+		}
+	}
+
+	grandSum := 0
+	grandSum2 := 0
+
+	for ii, operator := range operators {
+		switch operator {
+		case "+":
+			for jj := range len(numbers) {
+				grandSum += numbers[jj][ii]
+				grandSum2 += tdNumbers[jj][ii]
+			}
+		case "*":
+			columnResult := 1
+			columnResult2 := 1
+			for jj := range len(numbers) {
+				columnResult *= numbers[jj][ii]
+				columnResult2 *= tdNumbers[jj][ii]
+			}
+			grandSum += columnResult
+			grandSum2 += columnResult2
+		}
+	}
+
+	fmt.Println(grandSum)
+	fmt.Println(grandSum2)
+
+	return grandSum
+}
+
+func main() {
+	if do(true) == 4277556 {
+		do(false)
+	}
+}