Hollow rectangle star pattern :
The task is print below hollow pattern of given dimension.
******************** * * * * * * * * ********************
Explanation:
- Input number of rows and columns.
- For rows of rectangle run the outer loop from 1 to rows.
for (i = 1; i < = rows; i++)
- For column of rectangle run the inner loop from 1 to columns.
for (j = 1; j < = columns; j++)
- Print star for first or last row or for first or last column, otherwise print blank space.
- After printing all columns of a row, print new line after inner loop.
Below is the implementation:
C++
// C++ code for hollow rectangle #include <bits/stdc++.h>using namespace std;// Function to print hollow rectangle void print_rectangle(int n, int m) { int i, j; for (i = 1; i <= n; i++) { for (j = 1; j <= m; j++) { if (i == 1 || i == n || j == 1 || j == m) cout << "*"; else cout << " "; } cout << endl; } } // Driver Codeint main() { int rows = 6, columns = 20; print_rectangle(rows, columns); return 0; } // This code is contributed // by rathbhupendra |
C
// C code for hollow rectangle#include <stdio.h>// Function to print hollow rectanglevoid print_rectangle(int n, int m){ int i, j; for (i = 1; i <= n; i++) { for (j = 1; j <= m; j++) { if (i==1 || i==n || j==1 || j==m) printf("*"); else printf(" "); } printf("\n"); }}// Driver program for above functionint main(){ int rows = 6, columns = 20; print_rectangle(rows, columns); return 0;} |
Java
// JAVA code for hollow rectangleimport java.io.*;class GFG { // Function to print hollow rectangle static void print_rectangle(int n, int m) { int i, j; for (i = 1; i <= n; i++) { for (j = 1; j <= m; j++) { if (i == 1 || i == n || j == 1 || j == m) System.out.print("*"); else System.out.print(" "); } System.out.println(); } } // Driver program for above function public static void main(String args[]) { int rows = 6, columns = 20; print_rectangle(rows, columns); }}/*This code is contributed by Nikita Tiwari.*/ |
Python3
# Python 3 code for hollow rectangle# Function to print hollow rectangledef print_rectangle(n, m) : for i in range(1, n+1) : for j in range(1, m+1) : if (i == 1 or i == n or j == 1 or j == m) : print("*", end="") else : print(" ", end="") print()# Driver program for above functionrows = 6columns = 20print_rectangle(rows, columns)# This code is contributed by Nikita Tiwari. |
C#
using System;public class GFG{ // Function to print hollow rectangle static void print_rectangle(int n, int m) { int i, j; for (i = 1; i <= n; i++) { for (j = 1; j <= m; j++) { if (i == 1 || i == n || j == 1 || j == m) Console.Write("*"); else Console.Write(" "); } Console.WriteLine(); } } // Driver program for above function public static void Main() { int rows = 6, columns = 20; print_rectangle(rows, columns); }}// This code is contributed by ksrikanth0498. |
PHP
<?php// PHP code for hollow rectangle// Function to print hollow rectanglefunction print_rectangle($n, $m){ $i; $j; for ($i = 1; $i <= $n; $i++) { for ($j = 1; $j <= $m; $j++) { if ($i == 1 || $i == $n || $j == 1 || $j == $m) echo("*"); else echo(" "); } echo("\n"); }} // Driver Code $rows = 6; $columns = 20; print_rectangle($rows, $columns);// This code is contributed by nitin mittal?> |
Javascript
<script> // JavaScript code for hollow rectangle // Function to print hollow rectangle function print_rectangle(n, m) { var i, j; for (i = 1; i <= n; i++) { for (j = 1; j <= m; j++) { if (i == 1 || i == n || j == 1 || j == m) document.write("*"); else document.write(" "); } document.write("<br>"); } } // Driver Code var rows = 6, columns = 20; print_rectangle(rows, columns); // This code is contributed by rdtank. </script> |
Output
******************** * * * * * * * * ********************
Time Complexity: O(m * n), where m and n represents the given inputs.
Auxiliary Space: O(1), no extra space is required, so it is a constant.
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