Write a function add that, given two lists of digits that represent a pair of
numbers returns a list of digits representing the sum of those two numbers.
You should not convert the input into a pair of ints to perform the addition
like the placeholder does. The goal is to implement the same algorithm for
adding as you would do by hand.
You should replace the code in add in main.py for this problem.
Recall that a digit is an integer d such that 0 <= d <= 9.
add([1], [1]) == [2]
add([5], [5]) == [1, 0]
add([5], [7]) == [1, 2]
add([5, 6, 3], [8, 5, 4]) == [1, 4, 1, 7]To test your code, open a terminal in the folder you are working in and run
pytest.
If you wish to test a specific case, you may run the program with
python main.py and you will be prompted to enter the numbers you wish to add.
You will need pytest and Hypothesis installed to run the testing code.
You can install these with
pip install pytest hypothesis
If you wish to make sure that you are returning the correct type of output,
there are provided type annotations so all you have to do is run
mypy main.py to test the type correctness of your program.
If you don't have mypy installed, you may have to use pip install mypy first.