Question

How to remove characters that are included in first string from the second string in C#

Answer 1

using System;

class Program
{
    static String removeChars(String s, String chars) { 
        int i = 0, internal_i = 0; 
        char[] arr = s.ToCharArray(); 
      
        while (i != arr.Length) { 
            char ch = arr[i]; 
            if (chars.ToLower().IndexOf(ch) == -1) { 
                arr[internal_i] = arr[i]; 
                internal_i ++; 
            } 
            i++; 
        }  
         s = new String(arr); 

        return s.Substring(0, internal_i); 
    } 
    static void Main()
    {
        String first = "c# programming language"; 
        String second = "rogb"; 
        
        String s = removeChars(second, first); 
        Console.WriteLine(s); 
    }
}


/*
run:

b

*/

 

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