Dado el valor de n, imprima el patrón de flecha.
Ejemplos:
Input : n = 5
Output :
*
**
***
****
*****
****
***
**
*
Input : n = 7
Output :
*
**
***
****
*****
******
*******
******
*****
****
***
**
*
A continuación se muestra el programa para imprimir el patrón de flecha:
C++
// C++ program to print the
// arrow pattern
#include <bits/stdc++.h>
using namespace std;
// Function to print pattern
void print_arrow(int n)
{
// for printing upper part
// of the arrow
for (int i = 1; i < n; i++) {
// To give space before printing
// stars in upper part of arrow
for (int j = 0; j < i; j++) {
cout << " ";
}
// To print stars in upper
// part of the arrow
for (int k = 0; k < i; k++) {
cout << "*";
}
cout << "\n";
}
// for printing lower part
// of the arrow
for (int i = 0; i < n; i++) {
// To give space before printing
// stars in lower part of arrow
for (int j = 0; j < n - i; j++) {
cout << " ";
}
// To print stars in lower
// part of the arrow
for (int k = 0; k < n - i; k++) {
cout << "*";
}
cout << "\n";
}
}
// Driver code
int main()
{
// taking input from user
int n = 5;
// function calling
print_arrow(n);
return 0;
}
Java
// Java program to print the
// arrow pattern
import java.io.*;
class GFG {
// Function to print pattern
static void print_arrow(int n)
{
// for printing upper part
// of the arrow
for (int i = 1; i < n; i++) {
// To give space before printing
// stars in upper part of arrow
for (int j = 0; j < i; j++) {
System.out.print(" ");
}
// To print stars in upper
// part of the arrow
for (int k = 0; k < i; k++) {
System.out.print("*");
}
System.out.println();
}
// for printing lower part
// of the arrow
for (int i = 0; i < n; i++) {
// To give space before printing
// stars in lower part of arrow
for (int j = 0; j < n - i; j++) {
System.out.print(" ");
}
// To print stars in lower
// part of the arrow
for (int k = 0; k < n - i; k++) {
System.out.print("*");
}
System.out.println();
}
}
public static void main (String[] args)
{
// taking input from user
int n = 5;
// function calling
print_arrow(n);
}
}
// This code is contributed by Gitanjali.
Python3
# Python program to print the
# arrow pattern
import math
# Function to print pattern
def print_arrow(n):
# for printing upper part
# of the arrow
for i in range(1,n):
# To give space before printing
# stars in upper part of arrow
for j in range(0,i):
print(" ",end="")
# To print stars in upper
# part of the arrow
for k in range(0,i):
print("*",end="")
print()
# for printing lower part
# of the arrow
for i in range(0,n):
# To give space before printing
# stars in lower part of arrow
for j in range (0,n-i):
print(" ",end="")
# To print stars in lower
# part of the arrow
for k in range (0,n-i):
print("*",end="")
print()
#driver code
n = 5
# function calling
print_arrow(n)
# This code is contributed by Gitanjali.
C#
// C# program to print
// the arrow pattern
using System;
class GFG {
// Function to print pattern
static void print_arrow(int n)
{
// for printing upper
// part of the arrow
for (int i = 1; i < n; i++) {
// To give space before printing
// stars in upper part of arrow
for (int j = 0; j < i; j++) {
Console.Write(" ");
}
// To print stars in upper
// part of the arrow
for (int k = 0; k < i; k++) {
Console.Write("*");
}
Console.WriteLine();
}
// for printing lower
// part of the arrow
for (int i = 0; i < n; i++) {
// To give space before printing
// stars in lower part of arrow
for (int j = 0; j < n - i; j++) {
Console.Write(" ");
}
// To print stars in lower
// part of the arrow
for (int k = 0; k < n - i; k++) {
Console.Write("*");
}
Console.WriteLine();
}
}
// Driver code
public static void Main()
{
// taking input from user
int n = 5;
// function calling
print_arrow(n);
}
}
// This code is contributed by vt_m.
PHP
<?php
// PHP implementation to print
// the arrow pattern
// Function to print pattern
function print_arrow($n)
{
// for printing upper part
// of the arrow
for ($i = 1; $i < $n; $i++)
{
// To give space before printing
// stars in upper part of arrow
for ($j = 0; $j < $i; $j++)
{
echo " ";
}
// To print stars in upper
// part of the arrow
for ($k = 0; $k < $i; $k++)
{
echo "*";
}
echo "\n";
}
// for printing lower part
// of the arrow
for ($i = 0; $i < $n; $i++)
{
// To give space before printing
// stars in lower part of arrow
for ($j = 0; $j < $n - $i; $j++)
{
echo " ";
}
// To print stars in lower
// part of the arrow
for ($k = 0; $k < $n - $i; $k++)
{
echo "*";
}
echo "\n";
}
}
// Driver code
$n = 5;
print_arrow($n);
// This code is contributed by Mithun Kumar
?>
Javascript
<script>
// JavaScript program to print the
// arrow pattern
// Function to print pattern
function print_arrow(n)
{
// for printing upper part
// of the arrow
for (var i = 1; i < n; i++)
{
// To give space before printing
// stars in upper part of arrow
for (var j = 0; j < i; j++)
{
document.write(" ");
}
// To print stars in upper
// part of the arrow
for (var k = 0; k < i; k++) {
document.write("*");
}
document.write("<br>");
}
// for printing lower part
// of the arrow
for (var i = 0; i < n; i++)
{
// To give space before printing
// stars in lower part of arrow
for (var j = 0; j < n - i; j++)
{
document.write(" ");
}
// To print stars in lower
// part of the arrow
for (var k = 0; k < n - i; k++)
{
document.write("*");
}
document.write("<br>");
}
}
// Driver code
// taking input from user
var n = 5;
// function calling
print_arrow(n);
</script>
Producción:
*
**
***
****
*****
****
***
**
*
Complejidad temporal: O(n 2 )
Espacio Auxiliar: O(1)
Otro método:
C++
// C++ program to print the
// arrow pattern
#include <iostream>
#include<stdlib.h>
using namespace std;
class gfg
{
public : void print_arrow(int n)
{
// Total no of rows
for(int i = 0; i < n + n - 1; i++)
{
int size = i;
if(i >= n)
{
size = n + n - i - 2;
}
// cols in each row
for(int j = 0; j <= size + size; j++)
{
if(j < size) // For printing space
{
cout<<" ";
}
else // For printing *
{
cout<<"*";
}
}
cout<<"\n";
}
}
};
// Driver code
int main()
{
gfg g;
// taking input from user
int n = 5;
// function calling
g.print_arrow(n);
return 0;
}
C
// C program to print the
// arrow pattern
#include <stdio.h>
#include<stdlib.h>
void print_arrow(int n)
{
// Total no of rows
for(int i = 0; i < n + n - 1; i++)
{
int size = i;
if(i >= n)
{
size = n + n - i - 2;
}
// cols in each row
for(int j = 0; j <= size + size; j++)
{
if(j < size) // For printing space
{
printf(" ");
}
else // For printing *
{
printf("*");
}
}
printf("\n");
}
}
// Driver code
int main()
{
// taking input from user
int n = 5;
// function calling
print_arrow(n);
return 0;
}
Java
// Java program to print the
// arrow pattern
class GFG
{
static void print_arrow(int n)
{
// Total no of rows
for(int i = 0; i < n + n - 1; i++)
{
int size = i;
if(i >= n)
{
size = n + n - i - 2;
}
// cols in each row
for(int j = 0; j <= size + size; j++)
{
if(j < size) // For printing space
{
System.out.print(" ");
}
else // For printing *
{
System.out.print("*");
}
}
System.out.print("\n");
}
}
// Driver code
public static void main(String args[])
{
// taking input from user
int n = 5;
// function calling
print_arrow(n);
}
}
// This code is contributed
// by Akanksha Rai
Python3
# Python 3 program to print the
# arrow pattern
def print_arrow(n):
# Total no of rows
for i in range(n + n - 1):
size = i
if i >= n:
size = n + n - i - 2
# cols in each row
for j in range(size + size):
if j < size: # For printing space
print(' ', end = '')
else: # For printing *
print('*', end = '')
print()
# Driver code
# taking input from user
n = 5
# function calling
print_arrow(n)
# This code is contributed
# by SamyuktaSHegde.
C#
// C# program to print the
// arrow pattern
using System;
class GFG
{
static void print_arrow(int n)
{
// Total no of rows
for(int i = 0; i < n + n - 1; i++)
{
int size = i;
if(i >= n)
{
size = n + n - i - 2;
}
// cols in each row
for(int j = 0; j <= size + size; j++)
{
if(j < size) // For printing space
{
Console.Write(" ");
}
else // For printing *
{
Console.Write("*");
}
}
Console.Write("\n");
}
}
// Driver code
public static void Main()
{
// taking input from user
int n = 5;
// function calling
print_arrow(n);
}
}
// This code is contributed
// by Akanksha Rai
Javascript
<script>
// javascript program to print the
// arrow pattern
function print_arrow(n)
{
// Total no of rows
for(var i = 0; i < n + n - 1; i++)
{
var size = i;
if(i >= n)
{
size = n + n - i - 2;
}
// cols in each row
for(var j = 0; j <= size + size; j++)
{
if(j < size) // For printing space
{
document.write(" ");
}
else // For printing *
{
document.write("*");
}
}
document.write("<br>");
}
}
// Driver code
// taking input from user
var n = 5;
// function calling
print_arrow(n);
// This code is contributed by Princi Singh
</script>
Producción:
*
**
***
****
*****
****
***
**
*
Complejidad del tiempo: O(N 2 )
Espacio Auxiliar: O(1)
Publicación traducida automáticamente
Artículo escrito por Sahil_Bansall y traducido por Barcelona Geeks. The original can be accessed here. Licence: CCBY-SA