Lecture 23 by Julie Zelenski for the Programming Abstractions Course (CS106B) in the Stanford Computer Science Department. Julie shows a YouTube video of Barack Obama answering a question about what kind of sorting algorithm he would use to sort a list of data. She also gives several examples of problems that are capable of being solved with sorting. She goes on to say that if you think about certain problems as graphs, finding the solution is sometimes easier as well as easier to understand ...