Skip to content
Related Articles

Related Articles

Improve Article

Program to print the diamond shape

  • Difficulty Level : Medium
  • Last Updated : 08 Apr, 2021

Given a number n, write a program to print a diamond shape with 2n rows.
Examples : 
 

diamond

 

 

C++




// C++ program to print diamond shape
// with 2n rows
#include <bits/stdc++.h>
using namespace std;
 
// Prints diamond pattern with 2n rows
void printDiamond(int n)
{
    int space = n - 1;
 
    // run loop (parent loop)
    // till number of rows
    for (int i = 0; i < n; i++)
    {
        // loop for initially space,
        // before star printing
        for (int j = 0;j < space; j++)
            cout << " ";
 
        // Print i+1 stars
        for (int j = 0; j <= i; j++)
            cout << "* ";
 
        cout << endl;
        space--;
    }
 
    // Repeat again in reverse order
    space = 0;
 
    // run loop (parent loop)
    // till number of rows
    for (int i = n; i > 0; i--)
    {
        // loop for initially space,
        // before star printing
        for (int j = 0; j < space; j++)
            cout << " ";
 
        // Print i stars
        for (int j = 0;j < i;j++)
            cout << "* ";
 
        cout << endl;
        space++;
    }
}
 
// Driver code
int main()
{
    printDiamond(5);
    return 0;
}
 
// This is code is contributed
// by rathbhupendra

C




// C program to print
// diamond shape with
// 2n rows
#include<stdio.h>
 
// Prints diamond
// pattern with 2n rows
void printDiamond(int n)
{
    int space = n - 1;
 
    // run loop (parent loop)
    // till number of rows
    for (int i = 0; i < n; i++)
    {
        // loop for initially space,
        // before star printing
        for (int j = 0;j < space; j++)
            printf(" ");
 
        // Print i+1 stars
        for (int j = 0;j <= i; j++)
            printf("* ");
 
        printf("\n");
        space--;
    }
 
    // Repeat again in
    // reverse order
    space = 0;
 
    // run loop (parent loop)
    // till number of rows
    for (int i = n; i > 0; i--)
    {
        // loop for initially space,
        // before star printing
        for (int j = 0; j < space; j++)
            printf(" ");
 
        // Print i stars
        for (int j = 0;j < i;j++)
            printf("* ");
 
        printf("\n");
        space++;
    }
}
 
// Driver code
int main()
{
    printDiamond(5);
    return 0;
}

Java




// JAVA Code to print
// the diamond shape
import java.util.*;
 
class GFG
{
     
    // Prints diamond pattern
    // with 2n rows
    static void printDiamond(int n)
    {
        int space = n - 1;
     
        // run loop (parent loop)
        // till number of rows
        for (int i = 0; i < n; i++)
        {
            // loop for initially space,
            // before star printing
            for (int j = 0; j < space; j++)
                System.out.print(" ");
     
            // Print i+1 stars
            for (int j = 0; j <= i; j++)
                System.out.print("* ");
     
            System.out.print("\n");
            space--;
        }
     
        // Repeat again in
        // reverse order
        space = 0;
     
        // run loop (parent loop)
        // till number of rows
        for (int i = n; i > 0; i--)
        {
            // loop for initially space,
            // before star printing
            for (int j = 0; j < space; j++)
                System.out.print(" ");
     
            // Print i stars
            for (int j = 0; j < i; j++)
                System.out.print("* ");
     
            System.out.print("\n");
            space++;
        }
    }
     
    // Driver Code
    public static void main(String[] args)
    {
        printDiamond(5);
         
    }
}
 
// This code is contributed
// by Arnav Kr. Mandal.

Python3




# Python program to
# print Diamond shape
 
# Function to print
# Diamond shape
def Diamond(rows):
    n = 0
    for i in range(1, rows + 1):
        # loop to print spaces
        for j in range (1, (rows - i) + 1):
            print(end = " ")
         
        # loop to print star
        while n != (2 * i - 1):
            print("*", end = "")
            n = n + 1
        n = 0
         
        # line break
        print()
 
    k = 1
    n = 1
    for i in range(1, rows):
        # loop to print spaces
        for j in range (1, k + 1):
            print(end = " ")
        k = k + 1
         
        # loop to print star
        while n <= (2 * (rows - i) - 1):
            print("*", end = "")
            n = n + 1
        n = 1
        print()
 
# Driver Code
# number of rows input
rows = 5
Diamond(rows)

C#




// C# Code to print
// the diamond shape
using System;
 
class GFG
{
     
    // Prints diamond pattern
    // with 2n rows
    static void printDiamond(int n)
    {
        int space = n - 1;
     
        // run loop (parent loop)
        // till number of rows
        for (int i = 0; i < n; i++)
        {
            // loop for initially space,
            // before star printing
            for (int j = 0; j < space; j++)
                Console.Write(" ");
     
            // Print i+1 stars
            for (int j = 0; j <= i; j++)
                Console.Write("* ");
     
            Console.Write("\n");
            space--;
        }
     
        // Repeat again in
        // reverse order
        space = 0;
     
        // run loop (parent loop)
        // till number of rows
        for (int i = n; i > 0; i--)
        {
            // loop for initially space,
            // before star printing
            for (int j = 0; j < space; j++)
                Console.Write(" ");
     
            // Print i stars
            for (int j = 0; j < i; j++)
                Console.Write("* ");
     
            Console.Write("\n");
            space++;
        }
    }
     
    // Driver Code
    public static void Main()
    {
        printDiamond(5);
         
    }
}
 
// This code is contributed
// by Smitha Semwal.

PHP




<?php
// PHP program to print
// diamond shape with
// 2n rows
 
// Prints diamond $
// pattern with 2n rows
function printDiamond($n)
{
    $space = $n - 1;
 
    // run loop (parent loop)
    // till number of rows
    for ($i = 0; $i < $n; $i++)
    {
         
        // loop for initially space,
        // before star printing
        for ($j = 0;$j < $space; $j++)
            printf(" ");
 
        // Print i+1 stars
        for ($j = 0;$j <= $i; $j++)
            printf("* ");
 
        printf("\n");
        $space--;
    }
 
    // Repeat again in
    // reverse order
    $space = 0;
 
    // run loop (parent loop)
    // till number of rows
    for ($i = $n; $i > 0; $i--)
    {
         
        // loop for initially space,
        // before star printing
        for ($j = 0; $j < $space; $j++)
            printf(" ");
 
        // Pr$i stars
        for ($j = 0;$j < $i;$j++)
            printf("* ");
 
        printf("\n");
        $space++;
    }
}
 
    // Driver code
    printDiamond(5);
 
// This code is contributed by Anuj_67
?>

Javascript




<script>
      // JavaScript program to print diamond shape
      // with 2n rows
 
      // Prints diamond pattern with 2n rows
      function printDiamond(n) {
        var space = n - 1;
 
        // run loop (parent loop)
        // till number of rows
        for (var i = 0; i < n; i++) {
          // loop for initially space,
          // before star printing
          for (var j = 0; j < space; j++) document.write("  ");
 
          // Print i+1 stars
          for (var j = 0; j <= i; j++) document.write("*" + "  ");
 
          document.write("<br>");
          space--;
        }
 
        // Repeat again in reverse order
        space = 0;
 
        // run loop (parent loop)
        // till number of rows
        for (var i = n; i > 0; i--)
        {
         
          // loop for initially space,
          // before star printing
          for (var j = 0; j < space; j++) document.write("  ");
 
          // Print i stars
          for (var j = 0; j < i; j++) document.write("*" + "  ");
 
          document.write("<br>");
          space++;
        }
      }
 
      // Driver code
      printDiamond(5);
       
      // This code is contributed by rdtank.
    </script>

Output : 
 

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

This article is contributed by Rahul Singh(Nit KKR). If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.
Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above.
 

Want to learn from the best curated videos and practice problems, check out the C Foundation Course for Basic to Advanced C.



My Personal Notes arrow_drop_up
Recommended Articles
Page :