Hình tam giác sao

Ví dụ với N=3, sẽ in ra hình tam giá như sau

*
* *
* *  *

int n =3; 

for (int i = 1; i <= n; i++)
{
       for (int j = 1; j <= i; j++)
       {
              Console.Write("*");
       }
       Console.Write("\n");
}

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