Count the unique number of words inside a string builder(Not letters...Words))

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my sttring bulilder string would be like this:

StringBuilder sb = new StringBuilder();
sb.Append("hi friends hi");

i want to check the count of "hi" in the sb
so my final output would be like this.

Count is 2.

how to do that.

thank u
SUBIN

Posted 18-Apr-13 2:39am

kanamala subin

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Mehdi Gholam 18-Apr-13 8:43am

What have you tried?

kornakar 18-Apr-13 8:43am

You could use the Split method to split the string with a space (' ') and then loop though the resulting array and count the "hi" words.

[no name] 18-Apr-13 8:49am

You already asked this in the forums and received an answer. Please do not cross post. Pick one place and stick to it.

4 solutions

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Matej Hlatky · Answer 1 · 2013-04-18T02:51:00

1. You need to get String from that StringBuilder.
2. Split string by white-space characters - either use String.Split Method (Char[])[^] or Regex.Split Method (String, String)[^] (in case of Regex you should use compiled regex stored in static readonly field).
3. Filter and count words using LINQ or "manually" in foreach block.

C#

var sb = new StringBuilder("hi friends hi");
var text = sb.ToString();

var words = Regex.Split(text, @"\W");
//var words = text.Split(' ', '\t', '\r', '\n');

var count = words.Where(i => i == "hi").Count();

Johnny J. · Answer 2 · 2013-04-18T02:49:00

Solution 1

This might be of help to you:

http://stackoverflow.com/questions/9929279/to-count-the-frequency-of-each-word[^]

Also, if you Google c# count word occurrence, you will get plenty of other possible solutions!

Good luck!

Posted 18-Apr-13 2:49am

Johnny J.

joefromm · Answer 3 · 2013-04-18T03:07:00

Hi Mr.Subin

You could do the following:

C#

using System.Text;

namespace SoundTest
{
    class Program
    {
        static void Main(string[] args)
        {
            int count = 0;
            StringBuilder sb = new StringBuilder();
            sb.Append("hi user hi");
            string str = sb.ToString();
            string[] p = str.Split(' ');

            foreach (var item in p)
            {
                if (item == "hi") count++;
            }
            System.Console.WriteLine("count of hi = {0}",count);
        }
    }
}

TrushnaK · Answer 4 · 2013-04-18T22:11:00

Solution 4

Try for this:-

C#

int WordCount(string text)
{
  var regex = new System.Text.RegularExpressions.Regex(@"\w+");

  var matches = regex.Matches(text);
  return matches.Count;
}

Posted 18-Apr-13 22:11pm

TrushnaK

Count the unique number of words inside a string builder(Not letters...Words))

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