count number of 'this'

Question

hi friends please how to find the count of string variable for example in a line i am consists word 'this' four times. if i sear for this word then it should 4

Abhay Shanker · Answer

using System; using System.Linq; namespace StringCount { class Program { static void Main(string[] args) { string text = This is a pen.This is a cat.This is a room.This is an elephant.You say this ; string searchTerm = this; string[] source = text.Split(new char[] { '.' ' ' } StringSplitOptions.RemoveEmptyEntries); var matchQuery = from word in source where word.ToLowerInvariant() == searchTerm.ToLowerInvariant() select word; // Count the matches which executes the query. int wordCount = matchQuery.Count(); Console.WriteLine({0} occurrences(s) of the search term \{1}\ were found. wordCount searchTerm); // Keep console window open in debug mode Console.WriteLine(Press any key to exit); Console.ReadKey(); } } }

Vulpes · Answer

The easiest way is to use regular expressions: using System; using System.Text.RegularExpressions; class Test { static void Main() { string line = This is a line this is this line and so is this; string search = this; string regExp = @\b + search + @\b; MatchCollection mc = Regex.Matches(line regExp RegexOptions.IgnoreCase); Console.WriteLine(The word '{0}' occurs {1} time(s) search mc.Count); Console.ReadKey(); } } The output is: The word 'this' occurs 4 time(s) Note that case is ignored here so 'This' and 'this' are both counted.