Question

Assume that I have the following string:

"present present present presenting presentation do  do doing " 

And I’m counting the words inside the string according to their frequency in descending order:

I'm using GroupBy count 
present    3
do         2
doing      1
presenting 1
presentation 1

Then, I’m stemming the words:

using array [ , ] or any other structure

present  3
do       2
do       1
present  1
present  1

Finally, I want to recount the words into dictionary. So that the output should be:

present 5
do      3

Can anyone help please??. thanks in advance.

Answer 1

//Using List instead of Dictionary to allow keys multiplicity:
List> words = new List< KeyValuePair>();

        string text = "present present present presenting presentation do  do doing";
        var ws = text.Split(' ');

        //Passing the words into the list:
        words = (from w in ws
                 group w by w into wsGroups
                 select new KeyValuePair<string, int>(
                     wsGroups.Key, ws.Count()
                     )
                 ).ToList<KeyValuePair<string, int>>();

        //Ordering:
        words.OrderBy(w => w.Value);

        //Stemming the words:
        words = (from w in words
                 select new KeyValuePair<string, int>
                     (
                         stemword(w.Key),
                         w.Value
                     )).ToList<KeyValuePair<string, int>>();

        //Sorting and put into Dictionary:
        var wordsRef = (from w in words
                        group w by w.Key into groups
                        select new
                        {
                            count = groups.Count(),
                            word = groups.Key
                        }).ToDictionary(w => w.word, w => w.count);