Newbie needs help with array

[donniea21]

This is for a hw assignment i am having trouble with. I need to:

Use a single-subscripted array to represent a seating chart on a plane. Initialize all the elements of the array to 0 to indicate that all the seats are empty.

This is where i am having trouble:
As each seat is assigned, set the corresponding elements of the array to 1 to indicate that the seat in taken. The program should never assign a seat twice.

Do i increment the array? I know this is basic stuff but i am very new to it. Thanks

 

[haslo]

Why don't you use a boolean array for this?

Sorry, I did not exactly get what you meant by "increment the array". You can use the following to initialize the array (named seats here)...

boolean[] seats = new boolean[numberOfSeats]
for (int i = 0; i < seats.length; i++) {
seats = false;
}

Altough: This is not necessary - ints are automatically 0, booleans automatically false - they can't be null like &quot;real&quot; objects.

For access to a single element, simply use seats[index].

Post if you still have problems...

allow thyself to be the spark that lights the fire
haslo@haslo.ch - www.haslo.ch​

 

[donniea21]

The user chooses 1 or 2 from an input dialog. 1 for smoking 2 for non. The part i cant figure out is if I choose 1, the program should set seat[0] to 1 for filled. If i choose 1 again, the program needs to set seat[1] to 1 and so forth untill all the seats are filled. Seats 6 - 10 are designated for non smoking so i choose 1 more than five times, the program needs to state that seats 1-5 are filled. Thanks again for any help.

 

[haslo]

void fill(int fillValue, int[] seats)
{
boolean overfilled = false;
int i = 0;
while (!overfilled && seats > 0) {
i++;
if ((i >= 5 && fillValue == 1) || i >= seats.length) {
overfilled = true;
}
}
if (overfilled) {
// print error message
} else {
seats = fillValue;
}
}

You can also try to start from the top of the array if you have a smoker.

Hope this helps...

allow thyself to be the spark that lights the fire
haslo@haslo.ch - www.haslo.ch​