Program To Print Pattern 1

Write a program to print the following pattern.

In this pattern program, we are going to draw above pattern on the output screen with the help of various loops.

Algorithm:

STEP 1: START
STEP 2: SET lines= 10
STEP 3: SET space=(lines/2)-2
STEP 4: SET i=1 REPEAT STEP 5 to STEP 17 UNTIL i is less than or equals to lines.
STEP 5: SET flag1=0
SET l=1
STEP 6: REPEAT STEP 7 and 8 UNTIL l is less than or equals to i
STEP 7: IF flag1 is not true
PRINT '*' and INCREMENT flag1 by 1
ELSE PRINT BLANK SPACE "" WITH "*"
STEP 8: SET l=l+1
STEP 9: SET l=1
STEP 10: REPEAT STEP 11 UNTIL l is less than or equals to space
STEP 11: PRINT "" and SET l=l+1
STEP 12: DECREMENT space by 4.
STEP 13: SET l=1 and SET flag=1
STEP 14: REPEAT STEP 15 UNTIL l is less than or equals to i
STEP 15: IF flag is not true PRINT * and increment flag by 1.
ELSE PRINT BLANK SPACE "" WITH * .
STEP 16: PRINT new line
STEP 17: SET i=i+1
STEP 18: INCREMENT space by 4
STEP 19: SET i=lines/2
STEP 20: REPEAT STEP 21 to STEP 25 UNTIL i is greater than 1
STEP 21: SET flag=0 SET l=1
STEP 22: REPEAT STEP 23 and 24 UNTIL l is less than or equals to i
STEP 23: IF flag is not true PRINT *
ELSE PRINT "" + *
STEP 24: SET l=l+1
STEP 25: PRINT new line, SET i=i-1
STEP 26: EXIT

C Program:

#include <stdio.h>
int main()
{
int lines=10;
int space=(lines*2)-2;
for(int i=1;i<=(lines/2);i++) // this loop is used to print half lines
{
int flagl=0;
for(int l=1;l<=i;l++)	//this loops is used to print the pattern in a line
{
if(!flagl){
printf("*");
flagl++;
}
else
{
printf("");
printf("*");
}
}
for(int l=1;l<=space;l++)//this loop is used to print the space in a line
{
printf("");
}
space=space-4;
int flagr=0;
for(int l=1;l<=i;l++)// this loop is used to print the * in a line
{
if(!flagr){
printf("*");
flagr++;
}
else
{
printf("");
printf("*");
}
}
printf("\n");
} 
space=space+4;
for(int i=(lines/2);i>=1;i--)//this loop is used to print the one half of lines
{ 
int flagl=0;
for(int l=1;l<=i;l++)// this loop is used to print * inside a line
{
if(!flagl){
printf("*");
flagl++;
}
else
{
printf("");
printf("*");
}
}
for(int l=1;l<=space;l++)// this loop is used to print the space in a line
{
printf("");
}
space=space+4;// Increment space by 4
int flagr=0;
for(int l=1;l<=i;l++)// this loop is used to print * in a line
{
if(!flagr){
printf("*");
flagr++;
}
else
{
printf("");
printf("*");
}   
}
printf("\n");
}
return 0;
}

Output:

pattern.

PHP Program:

<?php
$lines=10;
$space=($lines*2)-2;
for($i=1;$i<=($lines/2);$i++)//this line is used to print half lines
{

$flagl=0;
for($l=1;$l<=$i;$l++)//this loop is used to print * inside a line
{
if(!$flagl){
echo"*";
$flagl++;
}
else
{
echo"";
echo"*";
}
}
for($l=1;$l<=$space;$l++)//this loop is used to print space in a line
{
echo"";
}
$space=$space-4;
$flagr=0;
for($l=1;$l<=$i;$l++)
{
if(!$flagr){
echo"*";
$flagr++;
}
else
{
echo"";
echo"*";
}

}
echo"\n";
}
$space=$space+4;
for($i=($lines/2);$i>=1;$i--)//this loop is used to print * inside the line
{

$flagl=0;
for($l=1;$l<=$i;$l++)//this loop is used to print the * inside a line
{
if(!$flagl){
echo"*";
$flagl++;
}
else
{
echo"";
echo"*";
}
}
for($l=1;$l<=$space;$l++)// this loop is used to print the space in a line
{
echo"";
}
$space=$space+4;//Increment space by 4
$flagr=0;
for($l=1;$l<=$i;$l++)// this loop is used to print * in a line
{
if(!$flagr){
echo"*";
$flagr++;
}
else
{
echo"";
echo"*";
}
}
echo"\n";
}
?>

Output:

Java Program:

public class pattern{
public static void main(String []args){
int lines=10;
int space=(lines*2)-2;
for(int i=1;i<=(lines/2);i++)//this loop is used to print one half lines
{            
boolean flagl=false;
for(int l=1;l<=i;l++)//this loop is used to print the * in a line
{
if(!flagl){
System.out.print("*");
flagl=true;
}
else
{
System.out.print("");
System.out.print("*");
}
}  
for(int l=1;l<=space;l++)//this loop is used to print the space in a line
{
System.out.print("");
}
space=space-4;// Decrement space by 4
boolean flagr=false;
for(int l=1;l<=i;l++)
{
if(!flagr){
System.out.print("*");
flagr=true;
}
else
{
System.out.print("");
System.out.print("*");
}

}
System.out.println("\n");
}
space=space+4;
for(int i=(lines/2);i>=1;i--)// this loop is used to print the one half lines
{
boolean flagl=false;
for(int l=1;l<=i;l++)// this loop is used to print * in a line
{
if(!flagl){
System.out.print("*");
flagl=true;
}
else
{
System.out.print("");
System.out.print("*");
}
}

for(int l=1;l<=space;l++)// this loop is used to print the space in a line
{
System.out.print("");
}
space=space+4;//Increment space by 4
boolean flagr=false;
for(int l=1;l<=i;l++)// this loop is used to print * in a line
{
if(!flagr){
System.out.print("*");
flagr=true;
}
else
{
System.out.print("");
System.out.print("*");
}      
}
System.out.println("\n");
}
}
}

Output:

C# Program:

using System.IO;
using System;
class Program
{
    static void Main()
    {
        
        int lines=10;
    int space=(lines*2)-2;
    for(int i=1;i<=(lines/2);i++)
        {
            bool flagl=false;
           for(int l=1;l<=i;l++)
                {
                if(!flagl){
                Console.Write("*");
                flagl=true;
                }
                else
                {
                    Console.Write(" ");
                    Console.Write("*");
                }
                }
                
           for(int l=1;l<=space;l++)
            { 
                Console.Write(" ");
            }
                space=space-4;
                bool flagr=false;
                for(int l=1;l<=i;l++)
                {
                if(!flagr){
                Console.Write("*");
                flagr=true;
                }
                else
                {
                    Console.Write(" ");
                    Console.Write("*");
                }
            }
            Console.WriteLine("");
        }
        space=space+4;
          for(int i=(lines/2);i>=1;i--)
       {
            bool flagl=false;
           for(int l=1;l<=i;l++)
                {
                if(!flagl){
                Console.Write("*");
                flagl=true;
                }
                else
                {
                    Console.Write(" ");
                    Console.Write("*");
                }
             }  
             for(int l=1;l<=space;l++)
            {
                Console.Write(" ");
            }
                space=space+4;
                bool flagr=false;
                for(int l=1;l<=i;l++)
                {
                if(!flagr){
                Console.Write("*");
                flagr=true;
                }
                else
                {
                    Console.Write(" ");
                    Console.Write("*");
                }
            }
            Console.WriteLine("");
        }
        
    }
}

Output:

Python Program:

lines=10
space=(lines*2)-2
i=1
while i<=(lines/2):	# this loop is used to print lines
    flagl=0;
    l=1
    while l<=i:	#this loop is used to print * in a line
        if not flagl:
            print('*', end='', flush=True)
            flagl=flagl+1
        else :
            print(' ', end='', flush=True)
            print('*', end='', flush=True)
            
        l=l+1
    l=1
    while l<=space:	#this loop is used to print space in a line
        print(' ', end='', flush=True)
        l=l+1
    space=space-4
    flagr=0
    l=1
    while l<=i:	#this loop is used to print * in a line
        if not flagr:
            print('*', end='', flush=True)
            flagr=flagr+1
        else :
            print(' ', end='', flush=True)
            print('*', end='', flush=True)
        l=l+1
            
                
    i=i+1
    print("")
    
        
        
        
space=space+4
i=lines/2
while i>0:	# this loop is used to print * in a line
    flagl=0
    l=1
    while l<=i:	# this loop is used to print * in a line
        if not flagl:
            print('*', end='', flush=True)
            flagl=flagl+1
        else:
            print(' ', end='', flush=True)
            print('*', end='', flush=True)
        
        l=l+1
    
    l=1
    while l<=space:	#this loop is used to print space in a line
        print(' ', end='', flush=True)
        l=l+1
    
    space=space+4
    flagr=0
    l=1
    while l<=i:	# this loop is used to print * in a line
        if not flagr:
            print('*', end='', flush=True)
            flagr=flagr+1
        else:
            print(' ', end='', flush=True)
            print('*', end='', flush=True)
        l=l+1
    print ()
    i=i-1

Output: