using System;

using System.Collections;

public class Program

{

    // Given a string of text containing fields that start with '[' and end with ']' and the current selection location.

    // Create one method that will return the next field closest to the current selection.

    // Create a second method that will return the previous field closest to the current selection.

    // Example

    // Input:

    // text = The patient is a [age]-year-old [gender].

    // selectionStart = 4

    // selectionLength = 7

    //

    // Output:

    // nextField = [age]

    // previousField = [gender]

    public static void Main()

    {

​

    }

}