i dont understand how this works

Question

What is the output of this code?
int arr[ ] = new int[3];
for (int i = 0; i < 3; i++) {
arr[i] = i;
}
int res = arr[0] + arr[2];
System.out.println(res);

the answer is 2

Answer 1

The first line is declaring an integer array called arr of size 3(accepts 3 integer elements(

The for loop will go through each array index. It starts from index 0 up to 2. (Because 2<3)

At arr[0] you assign 0
At arr[2] you assign 2.
Result is simply 0+2 and you get 2. .

Tip : learn further how array works. Good luck.

Answer 2

Happy to help. 👍

Answer 3

thx