Sample C# Interview Programs

Write a Simple Program to arrange numbers in below order
1
1 2
1 2 3
1 2 3 4
1 2 3 4 5

using system;
class program
{
  static void main()
    {
       int i, j;
       for (i=1;1<=5;i++)
      {
       for(j=1;j<=i;j++)
       { 
        Console.Write(j+" ");
       }
       console.writeline();
    }
    Console.ReadLine();
  }
}

1
2 3
4 5 6
7 8 9 10

using system;
class program
{
 static void main()

   {
     int i, j, k=0;
     for (i=1; 1<=5; i++)
     {
       for(j=1; j<=i; j++)
       { 
         k=k+1;
         Console.Write(j+" "); 
       }
       console.writeline();
     }
   }
   Console.Readline();
}

5
4 5
3 4 5
2 3 4 5
1 2 3 4 5

class Program
    {
        static void Main(string[] args)
        {
            int i, j, k=5;
            for (i = 1; i <= 5; i++)
            {
                k = k - i;
                for (j = 1; j <=i; j++)
                {
                    k = k + 1;
                    Console.Write(k+" ");
                }

                Console.WriteLine();
            }
            Console.ReadLine();
        }
    }

Star Pyramid:

    *
   * *
  * * *
 * * * *
* * * * *

class Program
    {
        static void Main(string[] args)
        {
            int k=4 ;
            
            for (int i = 1; i <= 5; i++)
            {
                for (int s = k; s>= 1; s--)
                {
                    Console.Write(" ");
                }
                k--;
                for (int j = 1; j <= i; j++)
                    {

                        Console.Write("* ");
                    }
                
                Console.WriteLine();
            }
            Console.ReadLine();
        }
    }

Star H:

* * * *          * * * *
* * * *          * * * *
* * * *          * * * *
* * * * * * * * * * *
* * * * * * * * * * *
* * * * * * * * * * *
* * * *          * * * *
* * * *          * * * *
* * * *          * * * *

class Program
    {
        static void Main(string[] args)
        {                      
            for (int i = 1; i <= 3; i++)
            { 
                for (int j = 1; j <= 4; j++)
                {
                    Console.Write("* ");
                }
                for (int k = 1; k <= 6; k++)
                {
                    Console.Write(" ");
                }
                for (int l = 1; l <= 4; l++)
                {
                    Console.Write("* ");
                }
                Console.WriteLine();
            }
            for (int a = 1; a <= 3; a++)
            {
                for (int b = 1; b <= 11; b++)
                {
                    Console.Write("* ");
                }
                Console.WriteLine();
            }
            for (int i = 1; i <= 3; i++)
            {
                for (int j = 1; j <= 4; j++)
                {
                    Console.Write("* ");
                }
                for (int k = 1; k <= 6; k++)
                {
                    Console.Write(" ");
                }
                for (int l = 1; l <= 4; l++)
                {
                    Console.Write("* ");
                }
                Console.WriteLine();
            }

            Console.ReadLine();
        }
    }

E
D E
C D E
B C D E
A B C D E

class Program
    {
        static void Main(string[] args)
        {
            int i, j;
            char cc = 'A';
            for (i = 5; i >= 1; i--)
            {
                for (j = i; j <= 5; j++)
                {
                    Console.Write((char)(cc + j - 1)+" ");
                    //  printf("%c", 'A' + j - 1);
                }
                Console.WriteLine();
            }
            Console.ReadLine();
        }
    }

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