Q&A Question about arrays.

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);

Can someone explain why this results in 2?

Answer 1

For the entire array,

arr[i] = i;

The array content/value is the index of the array, i.e. arr[0] is 0, arr[1] is 1, and so arr[0] + arr[2] is 2.