Question

Java

• Submit a program in a .java file. The program should print a multiplication table for the numbers 1-9.
• This requires a nested for loop. The outer loop moves from row to row, while the inner loop prints the row.
• Use tabs to separate the output, such as in the following statement:

     System.out.println(“1\t2\t3\t4\t5\t6\t7\t8\t9”);

• Output should look similar to the following.

1      2     3     4     5     6     7     8     9

------------------------------------------------------------------

1       2     3     4     5     6        7     8     9

2       4     6     8    10    12    14    16    18

3       6     9    12   15    18    21    24    27

4       8    12   16   20    24    28    32    36
     …

9      18   27   36   45    54    63    72    81

Write a program as follows:

• Inner Loop
  • Ask the user to specify how many values (an integer between 2 an 10) they want to to sum up.
  • Use a loop inside this loop to ensure that the number of values they enter is between 2 and 10
  • Use that value as a counter to request the user to enter the numbers to sum.
• Outer loop - ask the user if they want to sum up numbers again. If they do, the inner loop will execute again.

Answer 1

import java.util.Scanner;

public class Mult_Table {

public static void main(String[ ] args) {

for(int i=1; i <= 9; i++)

System.out.print(i +" \t ");

for(int i=1; i <=9; i++){// nested loop

  System.out.print(\t" ");

for(int j=1; j<= 9; j++)

System.out.print(i*j +" \t ");

}

}

}

-----------------+-------------------+

Program2

import java.util.Scanner;

public class Sum {

public static void main(String[ ] args) {

int n,x, sum=0,flag;

Scanner scan = new Scanner(System.in); System.out.print("Enter number between 2 and 10 "); n = scan.nextInt();

if( n<2||n>10)

{ System.out.print("invalid input");

return;. }

do{//outer loop

for(int i=1; i <= n; i++){//inner loop

x=scan.nextInt();

sum+=x;

}

System.out.println(" do you want to sum up again 1 for yes 0 for no");

flag=scan.nextInt();

}while(flag==1);

}

}