Crazy question

[Rachil Chandran]

As the subject line indicates, this is probably a very crazy question. But here goes...

I have the following code:

int a = 0;
for( int i = 0; i<10; i++)
{
print("Iteration number : "+i);
a += i;
}
print ("a = "+a);

The output will be

Iteration number : 0
Iteration number : 1
....
...
Iteration number : 9
a = 45

Is there some way I could get the "a =" line to be printed before the Iteration lines without using another loop?

i.e. the output should look like this,

a = 45
Iteration number : 0
Iteration number : 1
....
...
Iteration number : 9

[Mir Ciu]

Yes, it is possible, but you need a JVM with pre-cognition capabilities. I have one for sale, contact me for the payment details.

[Chetan Parekh]

int a = 0;
 
StringBuffer sb1 = new StringBuffer();
StringBuffer sb2 = new StringBuffer();
 
for( int i = 0; i<10; i++)
{
sb1.append("Iteration number : "+i);
a += i;
}
sb2.append("a = "+a);
 
System.out.println(sb2);
System.out.println(sb1);

[Rachil Chandran]

Thanks Chetan. Exactly what I wanted.

[fred rosenberger]

or, to avoid all that nasty string concatenation, do this:

a = (9 * 10) / 2;

or in general, if you are summing up the numbers from 0 to n,

a = (n * (n+1)) / 2;