Implement a Custom Iterator

Implement a custom iterator with hasNext() and next() methods. Requirements hasNext(): Returns whether the iterator has a next element. next(): Returns the next element. Assume the input is an array of integers. Example # Input iter = CustomIterator([1, 2, 3]) # Process assert iter.hasNext() == True assert iter.next() == 1 assert iter.hasNext() == True assert iter.next() == 2 assert iter.hasNext() == True assert iter.next() == 3 assert iter.hasNext() == False Constraints The length of the array n does not exceed 10^5. Ensure your code is efficient and no need to consider multithreading. Example Input [1, 2, 3]