using System;
using System.Data;
using System.Text.RegularExpressions;
using System.Text;
class Class1{
        static void Main(string[] args){
             Console.WriteLine(Base64EncodeBytes(new byte[5] {45,34,23,54,38}));
         }
    public static string Base64EncodeBytes(byte[] inputBytes) 
    {
      // Each 3 byte sequence in inputBytes must be converted to a 4 byte sequence 
      long arrLength = (long)(4.0d * inputBytes.Length / 3.0d);
      if ((arrLength  % 4) != 0) 
      {
        // increment the array lenght to the next multiple of 4 if it is not already divisible by 4
        arrLength += 4 - (arrLength % 4);
      }
    
      char[] encodedCharArray = new char[arrLength];
      Convert.ToBase64CharArray(inputBytes, 0, inputBytes.Length, encodedCharArray, 0);
      
      return (new string(encodedCharArray));
    }      
}

           
          

   
 

using System;

class MainClass {

    public static void Main() {
        string[] myStrings = {"To", "be", "or", "not","to", "be"};
        string myString = String.Join(".", myStrings);        

        string myString14 = '(' + myString.PadLeft(20) + ')';
        Console.WriteLine("'(' + myString.PadLeft(20)+ ')' = " + myString14);
        string myString15 = '(' + myString.PadLeft(20, '.')
        + ')';
        Console.WriteLine("'(' + myString.PadLeft(20, '.') =" + myString15);
        string myString16 = '(' + myString.PadRight(20) + ')';
        Console.WriteLine("'(' + myString.PadRight(20) + ')' =" + myString16);
        string myString17 = '(' +
        myString.PadRight(20, '.') + ')';
        Console.WriteLine("'(' +myString.PadRight(20, '.') + ')' = " + myString17);

    
    }
}

    

   
 

using System;

class MainClass {

    public static void Main() {

        string myString18 = '(' +"  Whitespace  ".Trim() + ')';
        Console.WriteLine("'(' +"  Whitespace  ".Trim() + ')' = " + myString18);
        string myString19 = '(' + "  Whitespace  ".TrimStart() + ')';
        Console.WriteLine("'(' +"  Whitespace  ".TrimStart() + ')' = " + myString19);
        string myString20 = '(' + "  Whitespace  ".TrimEnd() + ')';
        Console.WriteLine("'(' +"  Whitespace  ".TrimEnd() + ')' = " + myString20);

    
    }
}

    

   
 

using System;

class MainClass {

    public static void Main() {

        string[] myStrings = {"To", "be", "or", "not","to", "be"};
        string myString = String.Join(".", myStrings);        

        string myString21 = myString.Substring(3);
        Console.WriteLine("myString.Substring(3) = " + myString21);
        string myString22 = myString.Substring(3, 2);
        Console.WriteLine("myString.Substring(3, 2) = " + myString22);

        string myString23 = myString.ToUpper();
        Console.WriteLine("myString.ToUpper() = " + myString23);
        string myString24 = myString.ToLower();
        Console.WriteLine("myString.ToLower() = " + myString24);

    }
}

    

   
 


using System;

class MainClass {

    public static void Main() {
        string[] myStrings = {"To", "be", "or", "not","to", "be"};
        string myString = String.Join(".", myStrings);        
        Console.WriteLine("myString = " + myString);
        if (myString.StartsWith("To")) {
            Console.WriteLine("myString starts with "To"");
        }
        if (myString.EndsWith("be")) {
            Console.WriteLine("myString ends with "be"");
        }

    
    }
}

    

   
 

using System;

class MainClass {

    public static void Main() {

        string[] myStrings = {"To", "be", "or", "not","to", "be"};
        string myString9 = String.Join(".", myStrings);
        Console.WriteLine("myString9 = " + myString9);

    
    }
}

    

   
 

using System;

class MainClass {

    public static void Main() {
        string myString4 = String.Concat("Friends, ", "Romans");
        Console.WriteLine("myString4 = " + myString4);
        Console.WriteLine("Copying myString4 to myString7 using Copy()");
        string myString7 = String.Copy(myString4);
        Console.WriteLine("myString7 = " + myString7);
    
    }
}