Given a positive integer n i.e, the radius of the circle, print a circle using stars.
Examples :
Input : n = 3 Output : *** * * * * * * * * * * *** Input : n = 6 Output : ***** ** ** ** ** * * * * * * * * * * * * * * ** ** ** ** *****
Below is the implementation:
CPP
// C++ implementation to print circle pattern #include <bits/stdc++.h> using namespace std;
// function to print circle pattern void printPattern( int radius) {
// dist represents distance to the center
float dist;
// for horizontal movement
for ( int i = 0; i <= 2 * radius; i++) {
// for vertical movement
for ( int j = 0; j <= 2 * radius; j++) {
dist = sqrt ((i - radius) * (i - radius) +
(j - radius) * (j - radius));
// dist should be in the range (radius - 0.5)
// and (radius + 0.5) to print stars(*)
if (dist > radius - 0.5 && dist < radius + 0.5)
cout << "*" ;
else cout << " " ;
}
cout << "\n" ;
}
} // Driver Code int main() {
int radius = 6;
printPattern(radius);
return 0;
} |
Java
// Java implementation to print circle pattern class GFG {
// function to print circle pattern static void printPattern( int radius) {
// dist represents distance to the center
double dist;
// for horizontal movement
for ( int i = 0 ; i <= 2 * radius; i++) {
// for vertical movement
for ( int j = 0 ; j <= 2 * radius; j++) {
dist = Math.sqrt((i - radius) * (i - radius) +
(j - radius) * (j - radius));
// dist should be in the range (radius - 0.5)
// and (radius + 0.5) to print stars(*)
if (dist > radius - 0.5 && dist < radius + 0.5 )
System.out.print( "*" );
else
System.out.print( " " );
}
System.out.print( "\n" );
}
} // Driver code public static void main(String[] args)
{ int radius = 6 ;
printPattern(radius);
} } // This code is contributed by Anant Agarwal. |
Python3
# Python implementation # to print circle pattern import math
# function to print circle pattern def printPattern(radius):
# dist represents distance to the center
# for horizontal movement
for i in range (( 2 * radius) + 1 ):
# for vertical movement
for j in range (( 2 * radius) + 1 ):
dist = math.sqrt((i - radius) * (i - radius) + (j - radius) * (j - radius))
# dist should be in the
# range (radius - 0.5)
# and (radius + 0.5) to print stars(*)
if (dist > radius - 0.5 and dist < radius + 0.5 ):
print ( "*" ,end = "")
else :
print ( " " ,end = "")
print ()
# Driver code radius = 6
printPattern(radius) # This code is contributed # by Anant Agarwal. |
C#
// C# implementation to print circle pattern using System;
class GFG {
// function to print circle pattern
static void printPattern( int radius) {
// dist represents distance to the center
double dist;
// for horizontal movement
for ( int i = 0; i <= 2 * radius; i++) {
// for vertical movement
for ( int j = 0; j <= 2 * radius; j++) {
dist = Math.Sqrt((i - radius) *
(i - radius) + (j - radius)
* (j - radius));
// dist should be in the range
// (radius - 0.5) and (radius + 0.5)
// to print stars(*)
if (dist > radius - 0.5 &&
dist < radius + 0.5)
Console.Write( "*" );
else
Console.Write( " " );
}
Console.WriteLine( "" );
}
}
// Driver code
public static void Main()
{
int radius = 6;
printPattern(radius);
}
} // This code is contributed by vt_m. |
PHP
<?php // PHP implementation to print // circle pattern // Function to print circle pattern function printPattern( $radius )
{
// dist represents distance
// to the center
$dist = 0.0;
// for horizontal movement
for ( $i = 0; $i <= 2 * $radius ; $i ++)
{
// for vertical movement
for ( $j = 0; $j <= 2 * $radius ; $j ++)
{
$dist = sqrt(( $i - $radius ) *
( $i - $radius ) +
( $j - $radius ) *
( $j - $radius ));
// dist should be in the range
// (radius - 0.5) and (radius + 0.5)
// to print stars(*)
if ( $dist > $radius - 0.5 &&
$dist < $radius + 0.5)
echo "*" ;
else
echo " " ;
}
echo "\n" ;
}
} // Driver Code $radius = 6;
printPattern( $radius );
// This code is contributed by Mithun Kumar ?> |
Javascript
<script> // JavaScript implementation to print circle pattern // function to print circle pattern function printPattern(radius)
{ // dist represents distance to the center var dist = parseFloat(0);
// for horizontal movement
for ( var i = 0; i <= 2 * radius; i++)
{
// for vertical movement
for ( var j = 0; j <= 2 * radius; j++)
{
dist = Math.sqrt(
(i - radius) * (i - radius) +
(j - radius) * (j - radius)
);
// dist should be in the range (radius - 0.5)
// and (radius + 0.5) to print stars(*)
if (dist > radius - 0.5 && dist < radius + 0.5)
document.write( "*" );
else document.write( " " );
}
document.write( "<br>" );
}
}
// Driver Code
var radius = 6;
printPattern(radius);
</script>
|
Output
***** ** ** ** ** * * * * * * * * * * * * * * ** ** ** ** *****
Time Complexity: O(radius*radius))
Auxiliary Space: O(1)