Question

非常谨慎，这是家庭作业。无论如何试图做一个莫尔斯电码转换器，我只是停留在最后一个问题上。我想使用字符，然后使用string.replace，但是我不能，因为我的字典都是字符串。我想用字符。那我该如何解决呢？

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Answer 1

替换将字符串/字符作为参数，而不是键或值的集合。在这种情况下，您甚至不需要Replace，只需根据键添加值即可。
另外，您的outPutTranslation.Text仅包含最后一个字符。

Dictionary<string, string> morseDictionary = new Dictionary<string, string>
{
    { " ", " " }, { ",", "--..--" }, { ".", ".-.-.-" }, { "\\?", "..--.." }, { "0", "-----" }, { "1", ".----" }, { "2", "..---" }, { "3", "...--" },
    { "4", "....-" }, { "5", "....." }, { "6", "-...." }, { "7", "--..." }, { "8", "---.." }, { "9", "----." }, { "A", ".-" },
    { "B", "-..." }, { "C", "-.-." }, { "D", "-.." }, { "E", "." }, { "F", "..-." }, { "G", "--." }, { "H", "...." }, { "I", ".." },
    { "J", ".---" }, { "K", "-.-" }, { "L", ".-.." }, { "M", "---" }, { "N", "-." }, { "O", "---" }, { "P", ".--." }, { "Q", "--.-" },
    { "R", ".-." }, { "S", "..." }, { "T", "-" }, { "U", "..-" }, { "V", "...-" }, { "W", ".--" }, { "X", "-..-" }, { "Y", "-.--" },
    { "Z", "--.." }
};

string output = "";

foreach (char c in inputForTranslating.ToCharArray())
{
    output += morseDictionary[c];
}

outPutTranslation.Text = output;

Answer 2

好吧，string.Replace()可以同时使用两个字符或两个字符串。该错误明确指出morseDictionary.Keys不是字符串。 morseDictionary.Values都不是。是的，它们是字典的键和值的列表！

该代码中还有另一个错误。您正在将输入转换为char数组，然后迭代每个字符并尝试在其中替换。考虑一下它在做什么：

如果您有-.-，则在第一次迭代中，将搜索-，第二次搜索.，最后搜索-。您将永远找不到K。

您应该迭代字典，并搜索整个字符串中的每个单词。

foreach(string key in morseDictionary) {     
    //for morse->letter   
    inputForTranslating=inputForTranslating.Replace(morseDictionary[key],key);
    //for letter->morse
    inputForTranslating=inputForTranslating.Replace(key,morseDictionary[key]);

如何将string.replace（）与char一起使用？

2 个答案: