Question

9
999
99999
9999999

this is a computer program.......

please do this program......
i can't....
I want correct answer.......​

Answer 1

ANSWER

9

999

99999

9999999

0000

Answer 2

Question:-

• Write a Java program to print the pattern.

9

9 9 9

9 9 9 9 9

9 9 9 9 9 9 9

Program:-

import java.util.*;

class Pattern

{

public static void main(String args[])

{

Scanner sc=new Scanner(System.in);

System.out.print("Enter the number of rows: ");

int n=sc.nextInt();

for(int i=1;i<=n;i++)

{

for(int j=1;j<=2*i-1;j++)

System.out.print(9+" ");

System.out.println();

}

}

}

Do you know?

This can be solved using 1 loop also,

This is the program..

import java.util.*;

class Pattern

{

public static void main(String args[])

{

Scanner sc=new Scanner(System.in);

System.out.print("Enter the number of rows: ");

int n=sc.nextInt(), a=1;

for(int i=1;i<=n;)

{

if(a<=2*i-1)

{

System.out.print("9 ");

a++;

}

else

{

i++;

a=1;

System.out.println();

}

}// end of for loop.

}// end of main() method.

}// end of class.

Output:-

Enter the number of rows: 2

9

9 9 9

Enter the number of rows: 4

9

9 9 9

9 9 9 9 9

9 9 9 9 9 9 9

Explanation:-

I have taken input which asks the user for the number of rows. (variable n)

Now, I have created a for loop where initial value of i is 1 and it runs till the value of i is less than or equal to n.

Now, inside the loop, another loop is created in which, initial value of j is 1 and it runs till the value of j is 1,3,...(2*i-1). Inside the loop, 9 is printed.

When i=1;

j=1 and j<=2*1-1=2-1=1 (loop runs for 1 time after first iteration of outer loop)

When i=2;

j=1 and j<=2*2-1=3 (loop runs for 3 times and 9 is printed 3 times ..)

Similarly, 9 is printed 5,7,9 times.