Thread: help with homework - simple arrays

HI,

I notice that there are two of you with the same assignment.

//…Stuff
System.out.println("Enter values for first set, ending with -1");
 
String firstSet = new String();
String secondSet = new String();
 
int setA = input.nextInt();
int setB = input.nextInt();
 
while (setA != -1) {
    setA = input.nextInt();
    if (setA != -1)
        firstSet = firstSet + setA + " ";
}
 
//OTHER STUFF…

Think about the order that this is doing things.

What happens when you enter these values for the first set?

-1 -1 2 3 4 5 6 7 8 9

What happens when you enter these values for the first set?

1 -1 2 3 4 5 6 7 8 9

Can you see where the first two value are 'disappearing' now?

Also as a side note make sure you post in the correct section. I'm not sure how strict this forum is (my first time/post) but some forums can get pretty touchy about such things.

Suisse

int setA = input.nextInt();  
int setB = input.nextInt();

What are these 2 lines for? Currently you read the first 2 numbers into these variables and then throw them away.

I think i've been told you in the form of pseudocode on another thread in What's Wrong with my Code? Forum. Go and search there...