Java Program to Print Hollow Square with Increasing Number Pattern

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Print Hollow Square with Increasing Number Pattern

In the previous article, we have discussed Java Program to Print Hollow Square with Repeated Number Pattern

In this program we are going to see how to print the hollow square with increasing number pattern.

Example-1

When size value=5 
and start number = 1

1 1 1 1 1
2          2
3          3
4          4
5 5 5 5 5
Example-2:

When size value=3 
and start number = 5

5 5 5
6    6
7 7 7

Now, let’s see the actual program to print it.

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Approach:

  • Enter total size and start number store them in integer variables size & num respectively.
  • Take one outer for loop to iterate the rows,
  • Take one inner for loop to iterate the columns.
  • After each iteration print a new line.

Java Code to Print Hollow Square with Increasing Number Pattern

import java.util.Scanner;
class Main
{
public static void main(String[] args)
{
    //Create a new Scanner object
    Scanner scan = new Scanner(System.in);

    //Taking size as input from user
    System.out.print("Size of square : ");
    int size = scan.nextInt();

    //Taking number as input from user
    System.out.print("Number to print from : ");
    int num = scan.nextInt();

    //Row and column are the iterators
    int numberOfRows, numberOfColumns;

    //Outer loop to iterate the rows
    //Iterates from 1 to the size entered by the user
    for (numberOfRows = 1; numberOfRows <= size; numberOfRows++)
    {
        //Inner loop to iterate the columns
        //Iterates from 1 to the size entered by the user
        for (numberOfColumns = 1; numberOfColumns <= size; numberOfColumns++)
        {
            //Prints the num value if condition matches else prints space
            if (numberOfColumns == 1 || numberOfColumns == size || numberOfRows == 1 || numberOfRows == size)
                System.out.print(num+ " ");
            else
                System.out.print("  ");
        }
        //Incrementing numbe after each iteration
        num++;
        //Prints a newline
        System.out.println();
    }
}
}

Output:

Size of square : 5
Number to print from : 1

1 1 1 1 1 
2          2 
3          3 
4          4 
5 5 5 5 5

C Code to Print Hollow Square with Increasing Number Pattern

#include <stdio.h>

int main()
{
    //Taking size as input from user
    printf("Size of square : ");
    int size;
    scanf("%d", &size);

    //Taking number as input from user
    printf("Number to print from : ");
    int num;
    scanf("%d", &num);

    //Row and column are the iterators
    int numberOfRows, numberOfColumns;

    //Outer loop to iterate the rows
    //Iterates from 1 to the size entered by the user
    for (numberOfRows = 1; numberOfRows <= size; numberOfRows++)
    {
        //Inner loop to iterate the columns
        //Iterates from 1 to the size entered by the user
        for (numberOfColumns = 1; numberOfColumns <= size; numberOfColumns++)
        {
            //Prints the num value if condition matches else prints space
            if (numberOfColumns == 1 || numberOfColumns == size || numberOfRows == 1 || numberOfRows == size)
                printf("%d ", num);
            else
                printf("  ");
        }
        //Incrementing numbe after each iteration
        num++;
        //Prints a newline
        printf("\n");
    }
    return 0;
}

Output:

Size of square : 5
Number to print from : 1

1 1 1 1 1 
2          2 
3          3 
4          4 
5 5 5 5 5

C++ Code to Print Hollow Square with Increasing Number Pattern

#include <iostream>
using namespace std;
int main(int argc, char const *argv[])
{
    //Taking size as input from user
    printf("Size of square : ");
    int size;
    cin >> size;

    //Taking number as input from user
    printf("Number to print from : ");
    int num;
    cin >> num;

    //Row and column are the iterators
    int numberOfRows, numberOfColumns;

    //Outer loop to iterate the rows
    //Iterates from 1 to the size entered by the user
    for (numberOfRows = 1; numberOfRows <= size; numberOfRows++)
    {
        //Inner loop to iterate the columns
        //Iterates from 0 to one less than the size entered by the user
        for (numberOfColumns = 1; numberOfColumns <= size; numberOfColumns++)
        {
            //Prints the num value if condition matches else prints space
            if (numberOfColumns == 1 || numberOfColumns == size || numberOfRows == 1 || numberOfRows == size)
                cout << num << " ";
            else
                cout << "  ";
        }
        //Incrementing numbe after each iteration
        num++;
        //Prints a newline
        cout << endl;
    }
    return 0;
}


Output:

Size of square : 5
Number to print from : 1

1 1 1 1 1 
2          2 
3          3 
4          4 
5 5 5 5 5

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