Repeated Word Count In A String Using C# Dictionary

Ramesh Palanivel
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In this blog, we are going to learn how to get a duplicate word in a given string. Today(4/11/2017) a person posted a query to find the duplicate word from a textbox and wanted to display it on another textbox. For this reason, I am posting this blog for all the users who needs to apply the same logic in the future. It will be helpful to others.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace CountRepeatedWordCount
{
class Program
{
static void Main(string[] args)
{
string Word;
Console.WriteLine("Enter the word!..");
Word = Console.ReadLine(); // Read the Input string from User at Run Time
var Value = Word.Split(' '); // Split the string using 'Space' and stored it an var variable
Dictionary<string, int> RepeatedWordCount = new Dictionary<string, int>();
for (int i = 0; i < Value.Length; i++) //loop the splited string
{
if (RepeatedWordCount.ContainsKey(Value[i])) // Check if word already exist in dictionary update the count
{
int value = RepeatedWordCount[Value[i]];
RepeatedWordCount[Value[i]] = value + 1;
}
else
{
RepeatedWordCount.Add(Value[i], 1); // if a string is repeated and not added in dictionary , here we are adding
}
}
Console.WriteLine();
Console.WriteLine("------------------------------------");
Console.WriteLine("Repeated words and counts");
foreach (KeyValuePair<string, int> kvp in RepeatedWordCount)
{
Console.WriteLine(kvp.Key + " Counts are " + kvp.Value); // Print the Repeated word and its count
}
Console.ReadKey();
}
}
}