I want example application in c# based on the duplicate detection alogrithm

Question

duplicate detection alogrithm
Step 1: Consider the Stemmed keywords of the web page.
Step 2: Based on the starting character i.e. A-Z we here by assumed the hash values should start
with1-26.
Step 3: Scan every word from the sample and compare with DB (data base) (initially DB
Contains NO key values. Once the New keyword is found then generate respective hash
value. Store that key value in temporary DB.
Step 4: Repeat the step 3 until all the keywords get completes.
Step 5: Store all Hash values for a given sample in local DB (i.e. here we used array list)
Step 6: Repeat step 1 to step 6 for N no. of samples.
Step 7: Once the selected samples were over then calculate similarity measure on the samples
hash values which we stored in local DB with respective to webpages in repository.
Step 8: From similarity measure, we can generate a report on the samples in the score of %
forms. Pages that are 80% similar are considered to be near duplicates.
this is my duplicate detection alorithm. i want some example windows application in c# based on alogrithm.

Answer 1

Yu may want to use a dictionary which has a built in hash table for the key.  See code below for starting point
List<string> input = new List<string>() { "abc", "abd", "def", "ghi" };
Dictionary<string, List<string>> dict = input.AsEnumerable()
.GroupBy(x => x.Substring(0,1), y => y)
.ToDictionary(x => x.Key, y => y.ToList());
jdweng