Question

How does Java, Kotlin, and Android handle returning an Array value at a given index while incrementing the index value?

int[] someArray = new int[5];
int index = 0;
int result;

result = someArray[index++];

Which index would be passed to the result? Will it increment index first, then pass it to someArray[1], or will it pass the original value of index to someArray[0] and then increment index?

Answer 1

See: Java documentation, Assignment, Arithmetic, and Unary Operators:

The code result++; and ++result; will both end in result being incremented by one. The only difference is that the prefix version (++result) evaluates to the incremented value, whereas the postfix version (result++) evaluates to the original value.

So you’ll get someArray[0].