Tutor profile: Haoting T.

What is the order when iterating through a python dictionary?

There is no particular order when iterating through a python dictionary even if there is an easily-observable order of its keys or values. The reason is that dictionaries in python are implemented using hashtables to store the keys.

What is the difference between an Abstract Data Type and a Data Structure?

Data structures contain data values, relationships among the data, operations applied to the data. They also describe exactly how the data are organized and how tasks are performed. However, abstract data types are defined by their behavior from the view of the user and describe only what needs to be done not how it is done.

What is the difference between "stack" and "heap" in C++ programming?

Stack is the default place where the C++ compiler allocates new blocks of memory and will be deallocated after a function is returned. Heap is the place where the new blocks of memory will not be automatically deallocated after a function is returned.