Bug Report for dynamicArray

[RicoFio]

Bug Report for https://neetcode.io/problems/dynamicArray

The sample solution implements:

    # Remove the last element in the array
    def popback(self) -> int:
        if self.length > 0:
            # soft delete the last element
            self.length -= 1
        # return the popped element
        return self.arr[self.length]

However, this is wrong. The element is not removed and can still be accessed by get. Thus, there should (a) be a test case that covers this to ensure that the implementation matches the requirements, and (b) the Python sample solution should use pop (or, at least, set the element to 0). The sample solutions can look something like:

    def popback(self) -> int:
        if self._length > 0:
            self._length -= 1

        return self._array.pop(self._length)

[Srihari2222]

Thanks for the feedback! We are soft deleting the last element by decrementing the length. We are not actually popping it out.