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抱歉，我的英语很少。

我想用字符串计算短语。

我的字符串在下面;

Lorem ipsum dolor 坐下来，奉献精神。法无 venenatis， lorem ipsum augue vel pellentesque sit amet ， lorem ipsum dolor egestas lacus， et ipsum dolor nulla。

我想在下面;

3x Lorem ipsum



2x 坐下来

我试过这个链接的功能 Find which phrases have been used multiple times in a string.

但我的结果如下;

重复= 10080x（计算空格？）
重复= 99x photoshop
重复= 52x dersleri
重复= 44x photoshop dersleri
重复= 36x photoshop ile

但我想在下面;

重复= 44x photoshop dersleri
重复= 36x photoshop ile
重复=和其他人......

我使用了这个功能;

var splitBySpace = text2.Split(' ');

var doubleWords = splitBySpace
        .Select((x, i) => new { Value = x, Index = i })
        .Where(x => x.Index != splitBySpace.Length - 1)
        .Select(x => x.Value + " " + splitBySpace.ElementAt(x.Index + 1));

var duplicates = doubleWords
    .GroupBy(x => x)
    .Where(x => x.Count() > 1)
    .Select(x => new { x.Key, Count = x.Count() })
    .OrderByDescending(w => w.Count);

foreach (var word in duplicates)
    ensikkelimeler.Add(string.Format("{0}x {1}", word.Count, word.Key));

Answer 1

我稍微调整了你的代码（似乎是从this answer获取的）（我描述了评论中的更改）：

// all separators from sample text, add additional if necessary
var splitBySpace = text2.Split(new[] {' ', '.', ','}, StringSplitOptions.RemoveEmptyEntries);

var doubleWords = splitBySpace
    // make the search case insensitive
    .Select((x, i) => new {Value = x.ToLowerInvariant(), Index = i})
    .Where(x => x.Index != splitBySpace.Length - 1)
    .Select(x => x.Value + " " + splitBySpace.ElementAt(x.Index + 1));

var ensikkelimeler = doubleWords
    .GroupBy(x => x)
    .Where(x => x.Count() > 1)
    .Select(x => new {x.Key, Count = x.Count()})
    .OrderByDescending(w => w.Count)
    // do the formatting inside the link expression
    .Select(word => string.Format("{0}x {1}", word.Count, word.Key))
    .ToList();

以下是示例文本的结果：

3x lorem ipsum 
3x ipsum dolor 
2x sit amet

我还尝试了与您关联的问题的accepted answer。在我添加了对ToLowerInvariant()的调用后，它返回了两个单词短语的相同结果，但也包含了一个三字短语：

2x lorem ipsum dolor 
3x lorem ipsum 
3x ipsum dolor 
2x sit amet

Answer 2

var text = @"Lorem ipsum dolor sit amet, consectetur adipiscing elit. 
             Nulla venenatis, lorem ipsum augue vel pellentesque sit amet, 
             lorem ipsum dolor egestas lacus, et ipsum dolor nulla.";

var phrases = new string[] { "sit amet", "lorem ipsum" };

var q = phrases.Select(p => new { phrase = p, Count =  CountPhraseInText(text, p) })
               .OrderBy(x => x.Count);

CountPhraseInText功能：

int CountPhraseInText(string input, string phrase)
{
     return new Regex(phrase, RegexOptions.IgnoreCase).Matches(input).Count;
}

查找在字符串中多次使用的短语

2 个答案: