What Is an Algorithm? (Revisited)

Now that you can write real pseudocode, let’s look at algorithms like a pro: patterns, efficiency, and how two correct algorithms can differ enormously in speed. Same problem, two algorithms Problem: add up 1 + 2 + … + N. Algorithm A loops. Algorithm B uses a formula discovered by a 10-year-old Carl Friedrich Gauss. The patterns you’ll learn Check your understanding