How to fill array or arraylist sequentially without loop?

Question

I'm surprised I haven't found an answer to this anywhere. I want to fill an int array of 100 with 1..100. Fill is a good method but it doesn't increment the value each turn. Its obvious how to do it with a loop but I want to avoid that due to my maximum value being extremely high. Is there any api method which can do this for me?

Answer 1

1. There is no method in the standard library that will do this.

2. Even if there was, it would need to use a loop under the hood.

3. I don't see the significance of "my maximum value being extremely high". That should make no difference to the decision to use a loop ... or not.

4. Don't use recursion. Java does not implement tail call optimization so 1) it will be slower than using a loop and 2) you risk getting StackOverflowError if the array or list is large. (Yes, I know it is not large in the question as asked ...)