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Saturday 19 March 2022

Program to remove the duplicate character from the string

In this program, we will learn How to remove the duplicate character from the string in C#.

I will recommend you to check the below link for Top C# Interview Programs asked during the Interview and Examination.

Program to remove the duplicate character from the string
As C# in the case-sensitive language, I am converting the string to the lowercase string so that I can compare the characters otherwise capital characters and small alphabetical characters will be treated as different characters.
Program to remove the duplicate character from the string in C# in mentioned below:

Console.WriteLine("Enter a string to remove duplicate character from it:");

//Receive input from the user

string inputString = Console.ReadLine();

//Converting the inputString to lowercase

//other wise Uppercase and lowercase will be considered as difference character

inputString = inputString.ToLower();

//result for holding the distinct characters

string result = string.Empty;

//Loop through each character of the string

for (int i = 0; i < inputString.Length; i++)

{

    //If character is not added (contains) in the result variable, Add it to the result string

    if (!result.Contains(inputString[i]))

    {

        result += inputString[i];

    }

}

//Show the final result to the user

Console.WriteLine(result);

//Console.ReadLine() to hold the screen after the execution of the program

Console.ReadLine();

Output:

I hope this example will help in your interview/exam preparation.
Thanks
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