Write a program to print the following pattern on the console

belongs to collection: Pattern Programs

robaa

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2022-11-09

175

12344321

123**321

12****21

1******1

Algorithm

STEP 1: START
STEP 2: SET lines=15
STEP 3: Initialize i,j,k,and l
STEP 4: SET space=0
STEP 5: SET i=1
STEP 6: REPEAT STEP 7 TO 20 UNTIL i is less than lines
STEP 7: SET j=1
STEP 8: REPEAT STEP 9 UNTIL j is less than or equals to space.
STEP 9: PRINT " " and SET J=J+1
STEP 10: SET j=1
STEP 11: REPEAT STEP 12 and 13 UNTIL j is less than or equals to lines
STEP 12: IF j is less than equals lines-i PRINT j ELSE PRINT *
STEP 13: SET j=j+1
STEP 14: DECREMENT j by 1
STEP 15: REPEAT STEP 16 and 17 UNTIL j is greater than 0
STEP 16: IF j is greater than lines-i PRINT * ELSE PRINT j
STEP 17: SET j=j-1
STEP 18: IF lines-i is greater than 9 INCREMENT space by 1
STEP 19: PRINT new line
STEP 20: SET i=i+1
STEP 21: EXIT

All Answers

robaa

2022-11-09

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C Program:

#include <stdio.h>  
int main()  
{  
    int lines=15;  
    int i,j,k,l;  
    int space=0;   
    for(i=1;i<=lines;i++){// this loop is use to print lines  
        for(j=1;j<=space;j++){// this loop is used to print the space  
            printf(" ");  
        }  
        for(j=1;j<=lines;j++){// this loop is used to print numbers in a line  
            if(j<=(lines-i))  
            printf("%d",j);  
            else  
            printf("*");  
        }  
        j--;  
        while(j>0){// this loop is used to print numbers in a line  
            if(j>lines-i)  
            printf("*");  
            else  
            printf("%d",j);  
            j--;  
        }  
        if((lines-i)>9)  
        space=space+1;  
    printf("\n");  
    }  
}

Output:

PHP Program:

<?php  
$lines=15;  
$i;  
$j;  
$k;  
$l;  
    $space=0;  
    for($i=0;$i<$lines;$i++){// this loop is used to print lines  
         for($j=1;$j<=$space;$j++){//this loop is used to print space in a line  
            echo " ";  
        }  
           for($j=1;$j<=$lines;$j++){// this loop is used to print numbers   
            if($j<=($lines-$i))  
            echo $j;  
            else  
            echo "*";  
        }  
       $j--;  
        while($j>0){//this loop is used to print numbers in a line  
            if($j>$lines-$i)  
            echo "*";  
            else  
            echo $j;  
            $j--;  
        }  
        if(($lines-$i)>9)// this loop is used to increment space   
        $space=$space+1;  
    echo "<br>";  
    }  
?>

Output:

Java Program:

public class Main  
{  
    public static void main(String[] args) {  
    int lines=15;  
    int i,j,k,l;  
    int space=0;    
    for(i=0;i<lines;i++){// this loop is used to print lines  
        for(j=1;j<=space;j++){// this loop is used to print space in a line  
            System.out.print(" ");  
        }  
        for(j=1;j<=lines;j++){// this loop is used to print numbers in a line  
            if(j<=(lines-i))  
            System.out.print(j);  
            else  
            System.out.print("*");  
        }  
        j--;  
        while(j>0){// this loop is used to print numbers in a line  
            if(j>lines-i)  
            System.out.print("*");  
            else  
            System.out.print(j);  
            j--;  
        }  
        if((lines-i)>9)// this loop is used to increment space  
        space=space+1;  
    System.out.println("");  
    }  
}  
}

Output:

C# Program:

using System.IO;  
using System;  
public class Program  
{  
   public static void Main(String[] args)  
    {  
    int lines=15;  
    int i,j,k,l;  
    int space=0;  
    for(i=0;i<lines;i++){// this loop is used to print the lines  
        for(j=1;j<=space;j++){// this loop is used to print space in a line  
            Console.Write(" ");  
        }  
          
        for(j=1;j<=lines;j++){// this loop is used to print numbers in a line  
            if(j<=(lines-i))  
            Console.Write(j);  
            else  
            Console.Write("*");  
        }  
        j--;  
        while(j>0){// this loop is used to print numbers in a line  
            if(j>lines-i)  
            Console.Write("*");  
            else  
            Console.Write(j);  
            j--;  
        }  
        if((lines-i)>9)// this loop is used to increment space  
        space=space+1;  
    Console.WriteLine("");  
    }  
    }  
}

Output:

Python Program:

lines=15  
i=1  
j=1  
k=1  
l=1  
space=0;  
while i<lines: #this loop is used to print the lines  
    j=1  
    while j<=space:#this loop is used to print space in a line  
        print(' ', end='', flush=True)  
        j=j+1  
    j=1  
    while j<=lines:# this loop is used to print numbers in a line  
        if j<=lines-i:  
            print(j, end='', flush=True)  
        else:  
            print('*', end='', flush=True)  
        j=j+1  
    j=j-1  
    while j>0:# this loop is used to print numbers in a line  
        if j>lines-i:  
            print('*', end='', flush=True)  
        else:  
            print(j, end='', flush=True)  
        j=j-1  
    if lines-i>9:# this loop is used to increment space  
        space=space+1  
    print("")  
    i=i+1

Output: