lesson1Title

lesson2Title

lesson3Title

lesson4Title

lesson5Title

lesson6Title

lesson7Title

lesson8Title

lesson9Title

lesson10Title

lesson11Title

lesson12Title

lesson13Title

lesson14Title

lesson15Title

lesson16Title

lesson17Title

lesson18Title

lesson19Title

pythonIntroStep4Chapter3Title

pythonIntroStep4Chapter1Title

pythonIntroStep4Chapter2Title

# Key Takeaways So Far

So far, you've learned data structure and algorithm concepts, complexity, and arrays.

Before moving on to stacks and queues, let's review the key points card by card.

Algorithm efficiency is evaluated by the growth of running time (time complexity) and memory usage (space complexity).

Key Takeaways So Far

What are the two kinds of complexity that express an algorithm's efficiency?