C#: Display the pattern in which the first and a last number of each row will be 1

Last update on December 20 2024 12:41:06 (UTC/GMT +8 hours)

Write a program in C# Sharp to display such a pattern for n number of rows using a number starting with the number 1. The first and last number of each row will be 1..
The pattern is as follows :

  1
 121
12321

Visual Presentation:

Sample Solution:

C# Sharp Code:

using System;  // Importing necessary namespace

public class Exercise36  // Declaration of the Exercise36 class
{  
    public static void Main()  // Main method, entry point of the program
    {
        int i, j, n;  // Declaration of variables for row and column iteration

        Console.Write("\n\n");  // Displaying new lines
        Console.Write("Display the pattern in which the first and last number of each row will be 1:\n");  // Displaying the purpose of the program
        Console.Write("----------------------------------------------------------------------------\n\n");  // Displaying a separator and new lines

        Console.Write("Input number of rows: ");  // Prompting the user to input the number of rows
        n = Convert.ToInt32(Console.ReadLine());  // Reading the number of rows entered by the user

        for (i = 0; i <= n; i++)  // Loop for generating rows
        {
            /* print blank spaces */
            for (j = 1; j <= n - i; j++)  // Loop to print leading spaces in each row
                Console.Write(" ");

            /* Display numbers in ascending order up to the middle */
            for (j = 1; j <= i; j++)  // Loop to print numbers in ascending order
                Console.Write("{0}", j);

            /* Display numbers in reverse order after reaching the middle */
            for (j = i - 1; j >= 1; j--)  // Loop to print numbers in reverse order
                Console.Write("{0}", j);

            Console.Write("\n");  // Move to the next line for the next row
        }
    } 
}

Sample Output:

 Display the pattern in which first and last number of each row will be 1:                                  
----------------------------------------------------------------------------                                
Input number of rows : 5                                                                                    
    1                                                                                                       
   121                                                                                                      
  12321                                                                                                     
 1234321                                                                                                    
123454321

Flowchart:

C# Sharp Code Editor:

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