Answer to Question #272085 in C# for chi

Question

Write a program that reverses the input number n. Formulate an equation to come up with the answer:

(Apply the three loop statements in your solutions) Sample input/output dialogue:

Enter a number: 1238 Input data

Reverse number: 8321 Output value

1st Solution using- for loop

2nd Solution using- while loop

3rd Solution using- do while loop

Answer 1

class Program
{
    public static void Main()
    {


        Console.Write("Enter a number: ");
        string input = Console.ReadLine();


        string output = ReverseWithDoWhile(input);
        Console.WriteLine($"Reverse number: {output}");


        Console.ReadLine();
    }




    public static string ReverseWithFor(string text)
    {
        StringBuilder output = new StringBuilder(text.Length);


        for (int i = text.Length - 1; i >= 0; i--)
            output.Append(text[i]);


        return output.ToString(); ;
    }


    public static string ReverseWithWhile(string text)
    {
        StringBuilder output = new StringBuilder(text.Length);


        int i = text.Length - 1;
        while (i >= 0)
        {
            output.Append(text[i]);
            i--;
        }


        return output.ToString(); ;
    }


    public static string ReverseWithDoWhile(string text)
    {
        StringBuilder output = new StringBuilder(text.Length);


        int i = text.Length - 1;
        do
        {
            output.Append(text[i]);
        } while (--i >= 0);


        return output.ToString(); ;
    }
}