• + 1 comment

    I'm talking about space complexity. The space complexity is not O(1), and the space complexities in my 2 examples were different(one is O(n) as we are using a WHOLE n element array, while in the other we're using one variable).

    You on the other hand, are talking about the time complexity. It is O(1) per query and that's correct. But how is space in any way O(1) ? There exists an n element array.