Determinanten Rechner

main.go

@@ -0,0 +1,69 @@
+package main
+
+import (
+	"fmt"
+	"os"
+)
+
+func main() {
+	matrix := [][]int{{2, 6, 1, 6}, {3, 0, 7, 3}, {3, 1, 9, 6}, {1, 3, 0, 3}}
+	checkMat(matrix)
+	fmt.Printf("Matrix:\n")
+	outMat(matrix)
+	fmt.Printf("Determinante: %d", getDet(matrix))
+
+}
+
+func checkMat(mat [][]int) {
+	for i := 0; i < len(mat); i++ {
+		if len(mat) != len(mat[i]) {
+			fmt.Printf("Matrix ungueltig")
+			os.Exit(1)
+		}
+
+	}
+}
+
+func getDet(mat [][]int) int {
+	if len(mat) > 1 {
+		erg := 0
+		neg := 0
+		for i := 0; i < len(mat); i++ {
+			mat1 := [][]int{}
+			for j := 0; j < len(mat); j++ {
+				if j == i {
+					continue
+				}
+				mat1 = append(mat1, []int{})
+				for k := 1; k < len(mat[j]); k++ {
+					if j < i {
+						mat1[j] = append(mat1[j], mat[j][k])
+					} else {
+						mat1[j-1] = append(mat1[j-1], mat[j][k])
+					}
+				}
+
+			}
+			if neg == 0 {
+				erg = erg + mat[i][0]*getDet(mat1)
+				neg = 1
+			} else {
+				erg = erg - mat[i][0]*getDet(mat1)
+				neg = 0
+			}
+		}
+		return erg
+	} else {
+		return mat[0][0]
+	}
+
+}
+
+func outMat(mat [][]int) {
+	for i := 0; i < len(mat); i++ {
+		for j := 0; j < len(mat[0]); j++ {
+			fmt.Printf("%d ", mat[i][j])
+		}
+		fmt.Printf("\n")
+	}
+}