How to find the Characters in the First String that are not Present in the Second String in C# - Step by Step Examples

How to find the Characters in the First String that are not Present in the Second String in C# ?

Answer

To find the characters in the first string that are not present in the second string in C#, you can use LINQ and string methods.

✐ Examples

1 Find Characters Not Present in Second String

In this example,

We create two string variables named str1 and str2 with different values.
We convert both strings to arrays of characters.
We use LINQ to filter the characters of str1 that are not in str2.
Finally, we join the filtered characters array to form the result string.

C# Program

// Find Characters Not Present in Second String
using System;
using System.Linq;
class Program
{
    static void Main()
    {
        string str1 = "Hello World";
        string str2 = "apple";
        var diff = str1.Where(c => !str2.Contains(c));
        Console.WriteLine("Characters not present in second string: " + string.Join("", diff));
    }
}

Output

Characters not present in second string: Ho Word

Summary

In this tutorial, we learned How to find the Characters in the First String that are not Present in the Second String in C# language with well detailed examples.

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