题解 | #牛牛的字符菱形#

public class Program {
    public static void Main() {
       test(char.Parse(System.Console.ReadLine()));

    }
    private static void test(char c)
    {
        System.Console.WriteLine($"  {c}  ");
        System.Console.WriteLine($" {c}{c}{c} ");
        System.Console.WriteLine($"{c}{c}{c}{c}{c}");
        System.Console.WriteLine($" {c}{c}{c} ");     
        System.Console.WriteLine($"  {c}  ");  
    }
}