使用星星打印字母“A”的程序

给定行数 n，用星号打印字母 A 模式。
例子 ：

Input : Number of lines : 5
Output :
 * 
* *
***
* *
* *

Input : Number of lines : 10
Output :
 **** 
*    *
*    *
*    *
*    *
******
*    *
*    *
*    *
*    *

C++

// CPP program to print alphabet A pattern
#include 
using namespace std;
 
// Function to display alphabet pattern
void display(int n)
{
    // Outer for loop for number of lines
    for (int i = 0; i < n; i++) {
 
        // Inner for loop for logic execution
        for (int j = 0; j <= n / 2; j++) {
 
            // prints two column lines
            if ((j == 0 || j == n / 2) && i != 0 ||
 
                // print first line of alphabet
                i == 0 && j != 0 && j != n / 2 ||
 
                // prints middle line
                i == n / 2)
                cout << "*";
            else
                cout << " ";
        }
 
        cout << '\n';
    }
}
// Driver Function
int main()
{
    display(7);
    return 0;
}

Java

// Java program to print alphabet A pattern
import java.util.Scanner;
class PatternA {
    void display(int n)
    {
        // Outer for loop for number of lines
        for (int i = 0; i < n; i++) {
 
            // Inner for loop for logic execution
            for (int j = 0; j <= n / 2; j++) {
 
                // prints two column lines
                if ((j == 0 || j == n / 2) && i != 0 ||
 
                    // print first line of alphabet
                    i == 0 && j != 0 && j != n / 2 ||
 
                    // prints middle line
                    i == n / 2)
 
                    System.out.print("*");
                else
                    System.out.print(" ");
            }
 
            System.out.println();
        }
    }
 
    // Driver Function
    public static void main(String[] args)
    {
        Scanner sc = new Scanner(System.in);
        PatternA a = new PatternA();
        a.display(7);
    }
}

Python3

# Python3 program to print alphabet A pattern
 
# Function to display alphabet pattern
def display(n):
 
    # Outer for loop for number of lines
    for i in range(n):
 
        # Inner for loop for logic execution
        for j in range((n // 2) + 1):
 
            # prints two column lines
            if ((j == 0 or j == n // 2) and i != 0 or
 
                # print first line of alphabet
                i == 0 and j != 0 and j != n // 2 or
 
                # prints middle line
                i == n // 2):
                print("*", end = "")
            else:
                print(" ", end = "")
         
        print()
     
 
# Driver Function
display(7)
 
 
# This code is contributed by Anant Agarwal.

C#

// C# program to print alphabet A pattern
using System;
class PatternA {
    void display(int n)
    {
        // Outer for loop for number of lines
        for (int i = 0; i < n; i++) {
 
            // Inner for loop for logic execution
            for (int j = 0; j <= n / 2; j++) {
 
                // prints two column lines
                if ((j == 0 || j == n / 2) && i != 0 ||
 
                    // print first line of alphabet
                    i == 0 && j != 0 && j != n / 2 ||
 
                    // prints middle line
                    i == n / 2)
 
                Console.Write("*");
                else
                Console.Write(" ");
            }
 
            Console.WriteLine();
        }
    }
 
    // Driver Function
    public static void Main()
    {
        PatternA a = new PatternA();
        a.display(7);
    }
}
/*This code is contributed by vt_m.*/

Javascript

 
  // JavaScript program to print alphabet A pattern
 
  // Function to display alphabet pattern
  function display(n)
  {
    // Outer for loop for number of lines
    for (var i = 0; i < n; i++)
    {
      // Inner for loop for logic execution
      for (var j = 0; j <= Math.floor(n / 2); j++)
      {
        // prints two column lines
        if (
          ((j == 0 || j == Math.floor(n / 2)) && i != 0) ||
          // print first line of alphabet
          (i == 0 && j != 0 && j != Math.floor(n / 2)) ||
          // prints middle line
          i == Math.floor(n / 2)
        ) {
          document.write("*");
        } else document.write("  ");
      }
      document.write("<br>");
    }
  }
  // Driver Function
  display(7);
   

输出 ：

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