java - 尝试将字符串数组的索引值与 int 值进行比较

Question

因此，我尝试将字符串数组的索引与预定值进行比较，以便它可以根据排名返回卡的类型。我知道下面的方法是将实际字符串与数字进行比较，我只是不知道如何将实际索引值与数字进行比较。

public String findFaceValue()
{
    String faceValueArray[] = {"Ace", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"
                              , "Ten", "Jack", "Queen", "King"};
    for(int i = 0; i < faceValueArray.length; ++i)
    {   
        if (faceValueArray[i] == rank)
            return faceValueArray[i];   
    }
    return "Not a valid card";

}

Answer 1

So I am trying to compare the index of the array of strings to a predetermined value so it can return the type of card it will be based on the rank

如果您只是想检查给定的索引是否可以为您获取有效的卡。如果是，则返回卡的名称(等级)，否则返回“不是有效卡”。您可以执行以下操作:

public String findFaceValue(int index)
{
    String faceValueArray[] = {"Ace", "Two", "Three", "Four", "Five", "Six", "Seven", 
                               "Eight", "Nine", "Ten", "Jack", "Queen", "King"};

    if (index < 0 || index >= faceValueArray.length)
        return "Not a valid card";
    return faceValueArray[index];
}

Okay so rank is just any number between 1 and 13 so for example if it's 3 I want the program to return "Three".

要偏移索引，只需将其更改为:

if (index < 1 || index > faceValueArray.length)
    return "Not a valid card";
return faceValueArray[index-1];