Go语言开发点餐系统中的菜品推荐功能实现方法

type Dish struct {
    Name   string
    Type   string
    Taste  string
    Hot    int
}

var dishes = []Dish{
    {"宫保鸡丁", "川菜", "麻辣", 5},
    {"红烧肉", "家常菜", "咸甜", 4},
    {"清蒸鱼", "海鲜", "清淡", 3},
    // 其他菜品信息
}

func calcRecommendation(d Dish) float64 {
    // 根据热度、类型、口味等因素来计算推荐度
    return float64(d.Hot) * 0.3 + float64(d.Type=="川菜") * 0.2 + float64(d.Taste=="麻辣") * 0.3
}

func recommendDishes(dishes []Dish, preferenceType string, preferenceTaste string) []Dish {
    var recommendations []Dish
    for _, d := range dishes {
        if d.Type == preferenceType && d.Taste == preferenceTaste {
            recommendations = append(recommendations, d) // 满足用户偏好的菜品加入推荐列表
        }
    }

    // 按照推荐度降序排列
    sort.Slice(recommendations, func(i, j int) bool {
        return calcRecommendation(recommendations[i]) > calcRecommendation(recommendations[j])
    })

    return recommendations
}

func main() {
    preferenceType := "川菜"
    preferenceTaste := "麻辣"

    recommendations := recommendDishes(dishes, preferenceType, preferenceTaste)

    fmt.Println("根据您的偏好为您推荐以下菜品：")
    for _, d := range recommendations {
        fmt.Printf("菜品名称：%s    推荐度：%f
", d.Name, calcRecommendation(d))
    }
}