Given the value of n, print the pattern.
Examples :
Input : 5
Output :
*****
****
***
**
*
**
***
****
*****
Input : 7
Output :
*******
******
*****
****
***
**
*
**
***
****
*****
******
*******
Below is the implementation to print the above pattern :
C++
// C++ Implementation to print the pattern #include <bits/stdc++.h> using namespace std; // arrow function int arrow(int n) { // Prints the upper part of the arrow for (int i = 1; i <= n; i++) { // for the spacing to form // the point of the arrow for (int j = i; j < n; j++) { printf(" "); } // for printing the star(*) for (int j = i; j <= n; j++) { cout << "*"; } cout << endl; } // Prints lower part of the arrow for (int i = 2; i <= n; i++) { // for the spacing to form // the point of the arrow for (int j = 1; j < i; j++) { printf(" "); } // for printing the star(*) for (int j = 1; j <= i; j++) { cout << "*"; } cout << endl; } } // driver code int main() { // get the value from user int n = 5; // function calling arrow(n); return 0; } |
Java
// Java Implementation to // print the above pattern import java.io.*; class GFG { // arrow function static void arrow(int n) { // Prints the upper part of the arrow for (int i = 1; i <= n; i++) { // for the spacing to form // the point of the arrow for (int j = i; j < n; j++) { System.out.print(" "); } // for printing the star(*) for (int j = i; j <= n; j++) { System.out.print("*"); } System.out.println(); } // Prints lower part of the arrow for (int i = 2; i <= n; i++) { // for the spacing to form // the point of the arrow for (int j = 1; j < i; j++) { System.out.print(" "); } // for printing the star(*) for (int j = 1; j <= i; j++) { System.out.print("*"); } System.out.print('\n'); } } // driver code public static void main(String[] Argv) { // get the value from user int n = 5; // function calling arrow(n); } } // this code is contributed by 'vt_m' |
Python3
# Python Implementation to # print the pattern # arrow function def arrow(n): # Prints the upper part of the arrow for i in range(1, n+1): # for the spacing to form # the point of the arrow for j in range(i, n): print(" ", end="") # for printing the star(*) for j in range(i, n+1): print("*", end="") print() # Prints lower part of the arrow for i in range(2, n+1): # for the spacing to form # the point of the arrow for j in range(1, i): print(" ", end="") # for printing the star(*) for j in range(1, i+1): print("*", end="") print() # driver code # get the value from the user n = 5 # function calling arrow(n) # This code is contributed # by Anant Agarwal. |
C#
// C# Implementation to // print the above pattern using System; class GFG { // arrow function static void arrow(int n) { // Prints the upper part of the arrow for (int i = 1; i <= n; i++) { // for the spacing to form // the point of the arrow for (int j = i; j < n; j++) { Console.Write(" "); } // for printing the star(*) for (int j = i; j <= n; j++) { Console.Write("*"); } Console.WriteLine(); } // Prints lower part of the arrow for (int i = 2; i <= n; i++) { // for the spacing to form // the point of the arrow for (int j = 1; j < i; j++) { Console.Write(" "); } // for printing the star(*) for (int j = 1; j <= i; j++) { Console.Write("*"); } Console.WriteLine(); } } // driver code public static void Main() { // get the value from user int n = 5; // function calling arrow(n); } } // this code is contributed by 'vt_m' |
PHP
<?php // PHP Implementation to print // the pattern function arrow($n) { // Prints the upper part of // the arrow for ($i = 1; $i <= $n; $i++) { // for the spacing to form // the point of the arrow for ($j = $i; $j < $n; $j++) { echo " "; } // for printing the star(*) for ($j = $i; $j <= $n; $j++) { echo "*"; } echo "\n"; } // Prints lower part of the arrow for ($i = 2; $i <= $n; $i++) { // for the spacing to form // the point of the arrow for ($j = 1; $j < $i; $j++) { echo " "; } // for printing the star(*) for ($j = 1; $j <= $i; $j++) { echo "*"; } echo "\n"; } } // Driver code $n = 5; arrow($n); // This code is contributed by mits ?> |
Javascript
<script> // JavaScript Implementation // to print the pattern // arrow function function arrow(n) { // Prints the upper part of the arrow for (var i = 1; i <= n; i++) { // for the spacing to form // the point of the arrow for (var j = i; j < n; j++) { document.write(" "); } // for printing the star(*) for (var j = i; j <= n; j++) { document.write("*"); } document.write("<br>"); } // Prints lower part of the arrow for (var i = 2; i <= n; i++) { // for the spacing to form // the point of the arrow for (var j = 1; j < i; j++) { document.write(" "); } // for printing the star(*) for (var j = 1; j <= i; j++) { document.write("*"); } document.write("<br>"); } } // driver code // get the value from user var n = 5; // function calling arrow(n); </script> |
Output :
*****
****
***
**
*
**
***
****
*****
Time Complexity : O(n2) ,where n is the given input number.
Space Complexity : O(1) ,as we are not using any extra space.
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