Program To Print Pattern 9

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Write a program to print the following pattern on the console.

909

89098

7890987

678909876

56789098765

4567890987654

345678909876543

23456789098765432

1234567890987654321

Algorithm

STEP 1: START
STEP 2: SET lines=10
SET i=1
STEP 3: REPEAT STEP 4 to 15 UNTIL i is less than or equals to lines
STEP 4: SET count =0
SET j=1
STEP 5: REPEAT STEP 6 and 7 UNTIL j is less than lines
STEP 6: IF count is less than (i-1)
IF j is not less than (lines-i+1)
PRINT j AND INCREMENT count by 1
STEP 7: SET j=j+1
STEP 8: PRINT 0
STEP 9: SET count =0
STEP 10: DECREMENT j by 1
Step 11: REPEAT STEP 12 and 13 UNTIL j is greater than 0
STEP 12: IF count is less than (i-1)
PRINT j AND INCREMENT count by 1
STEP 13: SET j = j - 1
STEP 14: PRINT new line
STEP 15: i = i + 1
STEP 16: EXIT

Solution:

C Program:

#include <stdio.h>
int main()
{
   int lines=10;
   int i,j;
   int count;
   for(i=1;i<=lines;i++){// this loop is used to print lines
       count=0;
        for(j=1;j<lines;j++){// this loop is used to print numbers in a line
            if(count<i-1){
                if(!(j<lines-i+1)){
                    printf("%d",j);
                    count++;
                }            
            }
        }
        printf("0");
        count=0;
        for(--j;j>=1;j--){// this loop is used to print j and increment count
            if(count<i-1){
            printf("%d",j);
            count++;
            }
        }
        printf("\n");
   }
    return 0;
}

Output:

0 
909 
89098 
7890987 
678909876 
56789098765 
4567890987654 
345678909876543 
23456789098765432 
1234567890987654321

Java Program:

public class patter{
     public static void main(String []args){
         int lines=10;
   int i,j;
   int count;
   for(i=1;i<=lines;i++){// this loop is used to print lines
       count=0;
        for(j=1;j<lines;j++){// this loop is used to print numbers in a line
            if(count<i-1){
                if(!(j<lines-i+1)){
                    System.out.print(j);
                    count++;
                }
            }
        }
        System.out.print("0");
        count=0;
        for(--j;j>=1;j--){// this loop is used to print j and increment count
            if(count<i-1){
            System.out.print(j);
            count++;
            }
        }
        System.out.println("");
   }
     }
}

Output:

0
909
89098
7890987
678909876
56789098765
4567890987654
345678909876543
23456789098765432
1234567890987654321

C# Program:

using System;					
public class Program
{
	public static void Main()
	{
		 int lines=10;
   int i,j;
   int count;
   for(i=1;i<=lines;i++){// this loop is used to print lines
       count=0;
        for(j=1;j<lines;j++){// this loop is used to print numbers in a line
            if(count<i-1){
                if(!(j<lines-i+1)){
                    Console.Write(j);
                    count++;
                }
            }
        }
         Console.Write("0");
        count=0;
        for(--j;j>=1;j--){// this loop is used to print j and increment count
            
            if(count<i-1){
             Console.Write(j);
            count++;
            }
        }
         Console.WriteLine("");
   }
	}
}

Output:

0
909
89098
7890987
678909876
56789098765
4567890987654
345678909876543
23456789098765432
1234567890987654321

PHP Program:

$lines=10;
$i;
$j;
$count;
   for($i=1;$i<=$lines;$i++){// this loop is used to print lines
       $count=0;
        for($j=1;$j<$lines;$j++){// this loop is used to print numbers in line
            if($count<$i-1){
                if(!($j<$lines-$i+1)){
                    echo $j;
                    $count++;
                }
            
            }
        }
       echo '0';
        $count=0;
        for(--$j;$j>=1;$j--){//this loop is used to print j and increment count
            
            if($count<$i-1){
            echo $j;
            $count++;
            }
        }
        echo "<br>";
   }

Output:

0
909
89098
7890987
678909876
56789098765
4567890987654
345678909876543
23456789098765432
1234567890987654321

Python Program:

lines=10
i=1
j=1
count=0
while i<=lines:	#this loop is used to print lines
    
    count=0
    j=1
    while j<lines:	# this loop is used to priont numbers in a line
        if count<i-1:
            if j<lines-i+1:
                count=count
            else :
                print(j, end='', flush=True)
                count=count+1
        j=j+1
    print("0", end='', flush=True)
    count=0
    j=j-1
    while j>=1:	#this loop is used to print j and increment count
        if count<i-1:
            print(j, end='', flush=True)
            count=count+1
        j=j-1
    print("")
    i=i+1   

Output:

0
909
89098
7890987
678909876
56789098765
4567890987654
345678909876543
23456789098765432
1234567890987654321

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