c# - 阅读句子以制作字典或数组或关键字/关键短语列表

Question

这就是问题所在，假设我们有这样一个句子:

one or more time

句子根据空格拆分。

我们的想法是制作一个字典或数组或任何合适的列表，其中包含所有唯一且递增顺序的单词，这些单词可以是关键字或关键短语。所以我应该得到这样的东西:

one 
or 
more 
time
one or 
one or more 
one or more time
more time
...etc so on

但这些不是:

time more 
or time 
one time
more or
etc

这是我尝试过的:

private void AddWordsInDictionary(string phrase, ref Dictionary<string, string> dctKeywords)
{
    var keyWords = phrase.Split(new string[] { " " }, StringSplitOptions.RemoveEmptyEntries).Where(x => x.Trim() != string.Empty).ToList();

    foreach (var keyword in keyWords)
    {
        if(!dctKeywords.ContainsKey(keyword))
        {
            foreach (var key in dctKeywords)
            {
                dctKeywords.Add(key + " " + keyword, key + " " + keyword);
            }
        }
        else
            AddWordsInDictionary(keyword, ref dctKeywords);
    }

}

但它一直返回一个空白字典，我也不知道算法是否最优，请帮忙。

Answer 1

找到解决方案。

private static void AddWordsInDictionary(string phrase, ref Dictionary<string, string> dctKeywords)
{

    var keyWords = phrase.Split(new string[] { " " }, StringSplitOptions.RemoveEmptyEntries).Where(x => x.Trim() != string.Empty).ToList();

    Dictionary<string, string> dct = new Dictionary<string ,string>();
    int id = 0;

    string newPhrase = "";
    foreach (var keyword in keyWords)
    {
        dct[id.ToString()] = keyword;
        newPhrase = newPhrase + id.ToString();
        id++;
    }

    int xx = 0;

    while (xx < newPhrase.Length)
    {
        for (int idx = 0; idx <= newPhrase.Length; idx++)
        {
            if ( idx - xx > 0)
            {
                var item = newPhrase.Substring(xx, idx - xx).ToString();
                StringBuilder sb = new StringBuilder();
                foreach (var itm in item)
                {
                    sb.Append(dct[itm.ToString()] + " ");
                }
                var key = sb.ToString().Trim();
                dctKeywords[key] = key;
            }
        }
        xx++;
    }

}