Desperte for your help

**james** · May 20th, 2010, 11:21 PM

Hey guys i have anther program here that really needs your help.
Heres the question:
Do the following programs:
a) Write a program to display the sum of first 10 even numbers [2]
b) Write a program that displays the total number of multiples of 7 between the
numbers 1 and 100 [2]
c) Write a program to add seven terms of the following series. 1! + 2! + 3! ................
[3]

public class quetion3a
{
 public static void main(String[] args)
  {
   int num, sum;
   sum= 0;
   for (num=2; num<21; num=num+2)
        {
         sum=sum+num;
        }
   System.out.println("The sum of the first ten even numbers is "+sum);
  }
}

/>

**Darryl.Burke** · May 21st, 2010, 12:07 AM

Hey, whaddya think this is, a homework service?

Here's a good tutorial that will help you (link below)
The Java™ Tutorials

db

**dlorde** · May 22nd, 2010, 07:06 AM

We can help you write the code, but we won't write it for you. Post the code you have so far and explain what you are stuck on.

**javapenguin** · June 4th, 2010, 04:41 PM

For second part, perhaps

int num1 = 1;
int num2 = 1;
 
while (num2 >=1 && num2 <= 100)
{
num2 = num1 % 7;
 
if (num2 == 0)
{
isMultiple = true;
System.out.println(num1);
num2 = 1;
num1 = num1 + 1;
 
}
 
else 
{
isMultiple = false;
num1 = num1+ 1
}
 
}

**javapenguin** · June 6th, 2010, 04:38 PM

For the third part,

try something like

int arrayOfStoredFactorials[] = new int [7];
 
int list[] = new int[7];
 
for (int a = 0;  a < 7; a++)
{
list[a] = a+1;
}
 
for (int i= 0;  i < 7 ; i++)
{
arrayOfStoredFactorials[i] = list[i];
 
 
if (i > 0)
{
arrayOfFactorials[i] = list[i] * list[i-1];
}
 
}
 
int sum = 0;
 
for (int index = 0; index < arrayOfFactorials.length; index++)
{
sum = sum + arrayOfFactorials[index[;
}
 
System.out.println(sum);

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