Refactor code, added new checkXu test cases(9 latterns)

pkg/pattern/fan.go

@@ -0,0 +1,52 @@
+package pattern
+
+import (
+	"encoding/json"
+	"log"
+	"os"
+)
+
+type PatternDivision struct {
+	Ke   int
+	Shun int
+	Dui  int
+	Gang int
+}
+type Fan struct {
+	Id         int
+	Name       string
+	Pattern    PatternDivision
+	ExcludeIds []int
+	Value      int
+}
+
+func FansEncoder(fans []Fan) ([]byte, error) {
+	return json.MarshalIndent(fans, "", " ")
+}
+
+func FansDecoder(bytedata []byte) ([]Fan, error) {
+	var fans []Fan
+	err := json.Unmarshal(bytedata, &fans)
+	return fans, err
+}
+
+func FansToFile(fans []Fan, filepath string) error {
+	jsonBytes, err := FansEncoder(fans)
+	if err != nil {
+		log.Fatalf("Can't encode fan xing: %v", err)
+		return err
+	}
+	err = os.WriteFile(filepath, jsonBytes, 0644)
+	if err != nil {
+		log.Fatalf("Failed to write fan xing into a file(%s): %v", filepath, err)
+		return err
+	}
+	return nil
+}
+
+func DivisionHelperOnNumbers(tiles [9]int) {
+
+}
+func HandPatternDivide() {
+
+}