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Program to print numbers columns wise
  • Difficulty Level : Easy
  • Last Updated : 18 Apr, 2018

We have to print natural numbers columns wise with decreasing size, depending upon given number of lines as described in the examples below –

Examples :

Input : 5
Output :
1
2 6 
3 7 10
4 8 11 13
5 9 12 14 15

Input : 3
Output :
1
2 4
3 5 6

Approach :

  1. We will take outer for loop, which is for how many lines we want to print.
  2. Since we want to print natural number column by column, for this we will take an inner for loop.
    In the above example the number of element is depending upon number for i, therefore we take a variable k which is equal to i
    Value of i    ||     Number of Element
        1         ||          1
        2         ||          2
        3         ||          3     so on
    
  3. Using the logic k = k + n – j, we will get natural numbers according to requirement.

C++




// CPP Program to natural numbers columns wise
#include <bits/stdc++.h>
using namespace std;
  
void pattern(int n)
    // Outer loop for how many 
    // lines we want to print
    for (int i = 1; i <= n; i++) {
        int k = i;
  
        // Inner loop for printing
        // natural number
        for (int j = 1; j <= i; j++) {
            cout << k << " ";
  
            // Logic to print natural
            // value column-wise
            k = k + n - j;
        }
        cout << " \n";
    }
}
  
// Driver Code
int main()
{
    // get value from user
    int n = 5;
      
    // function calling
    pattern(n);
      
    return 0;
}
  
// This code is contributed by Vishal

Java




// Java Program to natural numbers columns wise
import java.util.Scanner;
class Pattern 
{
    void display()
    {
        int n = 5;
          
        // Outer loop for how many lines we want to print
        for (int i = 1; i <= n; i++) 
        {
            int k = i;
  
            // Inner loop for printing natural number
            for (int j = 1; j <= i; j++) 
            {
                System.out.print(k);
                  
                // Logic to print natural value column-wise
                k = k + n - j;
            }
            System.out.println();
        }
    }
  
    // Driver Code
    public static void main(String[] args)
    {
        Pattern p = new Pattern();
        p.display();
    }
}

Python3




# Python Program to natural numbers columns wise
  
def display():
        n = 5
        i = 1
  
        # Outer loop for how many lines we want to print
        while(i<=n): 
            k = i
            j = 1
  
            # Inner loop for printing natural number
            while(j <= i): 
                print (k,end=" ")
                  
                # Logic to print natural value column-wise
                k = k + n - j
                j = j + 1
                  
            print("\r")
            i = i + 1
  
#Driver code
display()
  
# This code is contributed by rishabh_jain

C#




//C# Program to natural numbers columns wise
using System;
class Pattern 
{
    void display()
    {
        int n = 5;
          
        // Outer loop for how many lines we want to print
        for (int i = 1; i <= n; i++) 
        {
            int k = i;
  
            // Inner loop for printing natural number
            for (int j = 1; j <= i; j++) 
            {
                Console.Write(k +" ");
                  
                // Logic to print natural value column-wise
                k = k + n - j;
            }
            Console.WriteLine();
        }
    }
  
    // Driver Code
    public static void Main()
    {
        Pattern p = new Pattern();
        p.display();
    }
}
//This code is contributed by vt_m.

PHP




<?php
// PHP implementation to print
// natural numbers columns wise
  
function pattern($n)
    // Outer loop for how many 
    // lines we want to print
    for ($i = 1; $i <= $n; $i++) 
    {
        $k = $i;
  
        // Inner loop for printing
        // natural number
        for ($j = 1; $j <= $i; $j++) 
        {
            echo $k." ";
  
            // Logic to print natural
            // value column-wise
            $k = $k + $n - $j;
        }
        echo " \n";
    }
}
  
// Driver Code
$n = 5;
pattern($n);
  
// This code is contributed by mits 
?> 

Output :

1
2 6 
3 7 10
4 8 11 13
5 9 12 14 15



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