Answer Posted / krishana singh gniit

using System;
using System.Text;

class Program
{
static void Main()
{
//
// Create an array with five strings.
//
string[] array = new string[5];
array[0] = "Dot";
array[1] = "Net";
array[2] = "Perls";
array[3] = "Sam";
array[4] = "Allen";

//
// Call the methods.
//
string result1 = ConvertStringArrayToString(array);
string result2 = ConvertStringArrayToStringJoin
(array);

//
// Display the results.
//
Console.WriteLine(result1);
Console.WriteLine(result2);
Console.Read();
}

static string ConvertStringArrayToString(string[] array)
{
//
// Concatenate all the elements into a
StringBuilder.
//
StringBuilder builder = new StringBuilder();
foreach (string value in array)
{
builder.Append(value);
builder.Append('.');
}
return builder.ToString();
}

static string ConvertStringArrayToStringJoin(string[]
array)
{
//
// Use string Join to concatenate the string
elements.
//
string result = string.Join(".", array);
return result;
}
}

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