Program to print Even Odd Number Pyramid

Given the total number of rows as n, the task is to print the given pattern.

*
1*
*2*
1*3*
*2*4*
1*3*5*
*2*4*6*
1*3*5*7*
*2*4*6*8*
1*3*5*7*9*
.
.

Examples:

Input: n = 5
Output:
*
1*
*2*
1*3*
*2*4*

Input: n = 10
Output:
*
1*
*2*
1*3*
*2*4*
1*3*5*
*2*4*6*
1*3*5*7*
*2*4*6*8*
1*3*5*7*9*

Below is the solution to the above problem:

C++

// CPP program to print Even Odd Number Pyramid 
  
#include <iostream> 
using namespace std; 
  
// function for creating pattern 
void Pattern(int n) 
{ 
    // Initialization 
    int i, j, k; 
    for (i = 1; i <= n; i++) { 
  
        for (j = 1, k = i; j <= i; j++, k--) { 
  
            if (k % 2 == 0) { 
  
                // displaying the numbers 
                cout << j; 
            } 
            else { 
  
                // displaying the stars 
                cout << "*"; 
            } 
        } 
        cout << "\n"; 
    } 
} 
  
// driver code 
int main() 
{ 
  
    // Get n 
    int n = 5; 
  
    // Print the pattern 
    Pattern(n); 
  
    return 0; 
} 

C

// C program to print Even Odd Number Pyramid 
  
#include <stdio.h> 
  
// function for creating pattern 
void Pattern(int n) 
{ 
    // Initialization 
    int i, j, k; 
    for (i = 1; i <= n; i++) { 
        for (j = 1, k = i; j <= i; j++, k--) { 
            if (k % 2 == 0) { 
  
                // displaying the numbers 
                printf("%d", j); 
            } 
            else { 
  
                // displaying the stars 
                printf("*"); 
            } 
        } 
        printf("\n"); 
    } 
} 
  
// driver code 
int main() 
{ 
  
    // Get n 
    int n = 5; 
  
    // Print the pattern 
    Pattern(n); 
  
    return 0; 
} 

Java

// Java program to print above pattern 
  
import java.util.Scanner; 
  
class Pattern { 
    static void display(int n) 
    { 
  
        int i, j, k; 
        for (i = 1; i <= n; i++) { 
  
            for (j = 1, k = i; j <= i; j++, k--) { 
  
                if (k % 2 == 0) { 
                    // displaying the numbers 
                    System.out.print(j); 
                } 
                else { 
                    // displaying the stars 
                    System.out.print("*"); 
                } 
            } 
            System.out.print("\n"); 
        } 
    } 
    // Driver Code 
    public static void main(String[] args) 
    { 
  
        // Get n 
        int n = 5; 
  
        // Print the pattern 
        display(n); 
    } 
} 

Python3

# Python3 program to print above pattern  
def display(n): 
    for i in range(1, n + 1): 
        k = i 
        for j in range(1, i + 1): 
            if k % 2 == 0: 
                  
                # Displaying the numbers  
                print(j, end = '') 
            else: 
                  
                # Displaying the stars  
                print('*', end = '') 
            k -= 1
        print() 
  
# Driver Code  
  
# Get n  
n = 5
  
# Print the pattern  
display(n) 
  
# This code is contributed by SamyuktaSHegde  

C#

// C# program to print above pattern 
using System; 
  
class GFG 
{ 
static void display(int n) 
{ 
  
    int i, j, k; 
    for (i = 1; i <= n; i++)  
    { 
  
        for (j = 1, k = i; j <= i; j++, k--)  
        { 
  
            if (k % 2 == 0)  
            { 
                // displaying the numbers 
                Console.Write(j); 
            } 
            else 
            { 
                // displaying the stars 
                Console.Write("*"); 
            } 
        } 
        Console.Write("\n"); 
    } 
} 
  
// Driver Code 
public static void Main() 
{ 
  
    // Get n 
    int n = 5; 
  
    // Print the pattern 
    display(n); 
} 
} 
  
// This code is contributed by anuj_67 

PHP

<?php  
// php program to print  
// above pattern  
    
function display($n)  
{  
    // Initialization 
    $i; 
    $j; 
    $k; 
  
    for($i=1; $i<=$n; $i++) 
    { 
        for($j=1, $k=$i; $j<=$i; $j++, $k--) 
        { 
            if($k%2==0){ 
  
            // displaying the numbers 
               echo $j;  
} 
            else{ 
  
            // displaying the stars 
                echo "*";  
} 
        } 
        echo "\n";  
    } 
}  
    
// Driver Code  
  
// Get n 
$n = 5; 
  
// Print the pattern 
display($n); 
  
?>  

Output:

*
1*
*2*
1*3*
*2*4*

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My Personal Notes

C++

C

Java

Python3

C#

PHP

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