How to add an item to start of an array in Java

Question

I am new to Java and I have an array

int [] A = {140,150,160,170,180,190}

I need to add infinity at the beginning of the array

like so:

int [] A = {inf,140,150,160,170,180,190}

I know from Python to do it like so:

A=[140,150,160,170,180,190]
A=[float('inf')]+A

I need a way to do that in Java as simple as Python without loops

It's important to say I need the array / list(A=[140,150,160,170,180,190]) to be given with the code.

Does this answer your question? [How to implement infinity in Java?](https://stackoverflow.com/questions/12952024/how-to-implement-infinity-in-java) — Jhanzaib Humayun, May 22 '22 at 10:59
You can't do this, because a Java `int` doesn't support infinity as a value. — Mark Rotteveel, May 22 '22 at 11:12

score 0 · Answer 1 · answered May 22 '22 at 11:07

0

You can use Java ArrayList that implements List interface and has a method add(int,E) So, you can use something like list.add(0, myObj);.

answered May 22 '22 at 11:07

aviad

Thank you for your answer! is there an option to write the list to begin with? something like: List list = new ArrayList(140,150,160,170); – Itay Drori May 22 '22 at 11:46
List arrayInt = new ArrayList<>(Arrays.asList(1,2,3)); – aviad May 23 '22 at 14:23

1 Answers1