Question

我是新来的，如果我没有问正确的问题，请原谅我。我正在尝试创建一个将采用字符串数组（药物）的函数，然后通过将其与其他数组进行比较来判断它是否属于某些类别。我试图用case switch方法实现这个目的。但它给了我错误＆＃34;不能形成范围upperBound

代码如果有：

//This is list of medications a patient may be on. This array will be generated by user input. 

var medicationArray = ["metoprolol", "Dulera", "Atrovastatin", "Albuterol", "lasix", "Sprinolactone", "Lisnopril","Aspirin","Apixaban"] 


//Function to compare medications above to arrays of different categories of medications. 
func medDetails(medications : [String]) {

//Arrays of list of different types of mjedications
let betaBlockerList = ["metoprolol", "carvedilol", "propanolol"]
let anticoagulantList = ["warfarin", "Apixaban","rivroxaban"]

var otherMedicationList : String = ""

// For loop to loop thru different medications patient is on. 
for medication in medications {

    //switch function to take the medication name and then comparing it against different arrays. 
    switch medication {
    //comparing medication against the range of of elements of first array. 
    case anticoagulantList[0]...anticoagulantList[anticoagulantList.count-1]:
        print("Patinet is on \(medication) for anticoagultion")

    //comparing medication against the range of of elements of second array. 
    case betaBlockerList[0]...betaBlockerList[betaBlockerList.count-1]:
        print("Patient is on \(medication) for betablocker")
    //list of medications that do not fit any of the above two categorias. 
    default:
        otherMedicationList = medication + ", "
        if medication == medications[medications.count - 1]{
            print("Patients other medications inculde \(otherMedicationList) .")

        }
    }
}
}

medDetails(medications: medicationArray

Answer 1

 let betaBlockerList = ["metoprolol", "carvedilol", "propanolol"]

＆＃34; betaBlockerList＆＃34;的开关案例工作良好。这是从＆＃34; m＆＃34;到＆＃34; p＆＃34;作为参数。这两个值按升序排列。

let anticoagulantList   = ["warfarin", "Apixaban","rivroxaban"]

您的开关案例＆＃34; anticoagulantList＆＃34;由于＆＃34;（w）arfarin＆＃34;的非递增顺序而无法正常工作和＆＃34;（r）ivroxaban＆＃34;

这里的切换案例并不是将整个字符串作为参数。您的betaBlockerList案例也在执行以下所有值

var medicationArray = ["metoprolol", "n", "o"]

Answer 2

我认为转换不是真正的最佳做法。一种好的方法是使用搜索功能，根据给定的前提搜索或过滤您的数组。但是如果你想实现一个更天真的解决方案，只需要做两个for循环。一个用于药物，另一个用于您正在比较的另一个阵列。然后在循环中添加一个if语句，检查药物是否属于该列表的一部分，如果是，您已找到答案，并且可以在此时打破循环。

Answer 3

@Nirav已经对错误发表了评论，但问题是交换机可能不是您问题的最佳解决方案（例如，如果您有300个组，该怎么办？）

因此，这是一个只需要组定义的版本：

python col.py < text.txt

当像var medicationArray = ["metoprolol", "Dulera", "Atrovastatin", "Albuterol", "lasix", "Sprinolactone", "Lisnopril","Aspirin","Apixaban"] func medDetails(medications: [String]) { let input = Set(medications) let betaBlockerList = Set(["metoprolol", "carvedilol", "propanolol"]) let anticoagulantList = Set(["warfarin", "Apixaban","rivroxaban"]) let groups = [ "betablocker": betaBlockerList, "anticoagultion": anticoagulantList ] // Get rid of any element from input that is present in groups let unmatched = input.subtracting(groups.values.flatMap({$0})) for medication in input { for (groupName, groupValues) in groups { if groupValues.contains(medication) { print("Patient is on \(medication) for \(groupName)") break } } } print("Patients other medications include: \(unmatched.joined(separator: ", "))") }打印时那样打印

患者服用美托洛尔治疗β受体阻滞剂

患者服用阿哌沙班进行抗凝治疗

患者其他药物包括：Sprinolactone，Atrovastatin，Dulera，Albuterol，Aspirin，Lisnopril，lasix

使用switch case将数组中的字符串与另一个数组进行比较

3 个答案: