Java Programming Help?

this sounds really easy.

You'll have a boolean for each prisoner (probably in an array) and then a series of for loops with if statements inside them that simply switch the booleans.

The first for would just be something like for(int i =1; i < 1000; i+2)

The second for would be something like for(int i=2; i < 1000; i+3)

and the last for would be like for(int i=3; i < 1000; i+4);

Similar to what another answerer said, you would do this.

1. Create an array of 1000 holding booleans. Set them all to true. That is, they are locked.

2. Create a for loop that goes from 1 to 1000.

3. Create a second for loop inside this for loop that goes from the number of the first loop to 1000. that is, 1, then 2, then 3, etc. Make the increment the same as the start number.

4. Change the boolean type. From false to true, or true to false.

5. At the end, go through the array again and output which ones are false as they are opened.

for (int i = 1; i <= 1000; i++)

{

for (int j = i; j <= 1000; j = j + i)

{

// change the boolean here. Be aware that the index into the array should be j - 1 since an array starts at 0 not 1, and goes to 999 not 1000.

}

}

Hope that helps.

So what's your question?

We're not going to do your homework for you. If you're having trouble with a specific part of the assignment, ask a question and I'll be happy to help.