How to use Go language to write the delivery route planning module in the door-to-door cooking system?

How to use Go language to write the delivery route planning module in the door-to-door cooking system?

With the accelerated pace of people’s lives and the continuous expansion of the takeout market, door-to-door cooking services have become a popular choice. However, how to purchase ingredients quickly and efficiently and plan the best delivery route has become an urgent problem for this industry to be solved. This article will introduce how to use Go language to write the delivery route planning module in the door-to-door cooking system, and give specific code examples.

Before we start writing code, we must first clarify the goals we want to achieve. The delivery route planning module of the door-to-door cooking system mainly includes the following steps:

1. Collect order information: Obtain the information of the user's order, including delivery address, dish type and quantity, etc.
2. Query inventory information: Query inventory information based on the type and quantity of dishes to determine whether there is sufficient supply of ingredients.
3. Delivery route planning: Plan the best delivery route based on the delivery address and food supply to reduce time and costs.

Next, we will use Go language to gradually implement these functions.

1. Collect order information

First, we need to define a structure to represent order information, including delivery address and dish information. The code is as follows:

type Order struct {
    DeliveryAddress string
    Dishes          []Dish
}

type Dish struct {
    Name   string
    Amount int
}

Then, we can get the order information entered by the user in the main function. The code is as follows:

func main() {
    // 获取用户订单信息
    order := getOrderInfo()

    // 按照订单信息进行后续操作
    ...
}

func getOrderInfo() Order {
    // 获取配送地址
    fmt.Print("请输入配送地址：")
    deliveryAddress := reader.ReadString('
')
    deliveryAddress = strings.TrimSpace(deliveryAddress)

    // 获取菜品信息
    dishes := make([]Dish, 0)
    for {
        var dish Dish

        fmt.Print("请输入菜品名称（输入q结束）：")
        dishName := reader.ReadString('
')
        dishName = strings.TrimSpace(dishName)

        if dishName == "q" {
            break
        }

        fmt.Print("请输入菜品数量：")
        amountStr := reader.ReadString('
')
        amountStr = strings.TrimSpace(amountStr)
        amount, _ := strconv.Atoi(amountStr)

        dish.Name = dishName
        dish.Amount = amount

        dishes = append(dishes, dish)
    }

    // 返回订单信息
    return Order{
        DeliveryAddress: deliveryAddress,
        Dishes:          dishes,
    }
}

2. Query inventory information

We can use a map to represent inventory information, the key is the dish name, and the value is the remaining quantity. Here, we simplify the process and assume that the inventory information is already stored in a global variable. The code is as follows:

var inventory = map[string]int{
    "青菜":   100,
    "土豆":   50,
    "牛肉":   30,
    "鱼":    20,
    "鸡蛋":   100,
}

Then, we can write a function to query inventory information. The code is as follows:

func checkInventory(order Order) bool {
    for _, dish := range order.Dishes {
        if inventory[dish.Name] < dish.Amount {
            return false
        }
    }

    return true
}

3. Delivery route planning

Here, we use a hypothetical optimal delivery route planning algorithm, simply based on the distance to the delivery address of the order Sort. The code is as follows:

type Route struct {
    DeliveryAddress string
    Distance        int
}

func planRoute(order Order) []Route {
    routes := make([]Route, 0)

    for _, dish := range order.Dishes {
        route := Route{
            DeliveryAddress: order.DeliveryAddress,
            Distance:        calculateDistance(order.DeliveryAddress),
        }

        routes = append(routes, route)
    }

    sort.Slice(routes, func(i, j int) bool {
        return routes[i].Distance < routes[j].Distance
    })

    return routes
}

func calculateDistance(address string) int {
    // 假设我们有已经实现的计算距离的函数
    ...
}

So far, we have completed the code writing of the delivery route planning module in the door-to-door cooking system.

Summary:

By using Go language, we can quickly and efficiently write the delivery route planning module in the door-to-door cooking system. This article gives specific code examples, including functions such as collecting order information, querying inventory information, and planning delivery routes. In actual applications, we can modify and optimize the code according to specific needs to meet different business needs. At the same time, we can also use more complex algorithms and data structures to achieve more accurate delivery route planning.

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