CODEWITHSUNDEEP
c#stringlinqduplicatesstring-comparison
Mike Johanson
Mike Johanson

Reputation: 61

Trouble in detecting repeated word in string in c#?

I want to detect and remove the duplications from string.

my code is here :

        string Tests = "Hi,World,Me,Hi,You";
        string[] Tests_Array = Tests.Split(',');
        Regex FindDup = new Regex(@"(.+)\1", RegexOptions.IgnoreCase);
        string t2 = "";
        foreach (string test in Tests_Array)
        {
            MatchCollection allMatches = FindDup.Matches(test);

            foreach (Match item in allMatches)
            {
                t2 = FindDup.Replace(test, string.Empty);
                textBox1.Text += string.Format(@"Final: ""{0}""", t2) + "\n";
            }
        }

But it does not work.

I do not know where is the problem ?

Thanks for any help.

Upvotes: 2

Views: 151

Answers (2)

Hassan
Hassan

Reputation: 5430

You could use LINQ

string Tests = "Hi,World,Me,Hi,You";
string[] Tests_Array = Tests.Split(',');
string result = String.Join(",", Tests_Array.Distinct());

Upvotes: 6

Sajeetharan
Sajeetharan

Reputation: 222582

You could simply do this,

var words = new HashSet<string>();
string text = "Hi,World,Me,Hi,You";
text = Regex.Replace(text, "\\w+", t => words.Add(t.Value.ToUpperInvariant())? t.Value: String.Empty);

Upvotes: 1

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