4. Sorting the List would be Better

4.1. Sorting is Easier in Memory

• Disk data is persistent: if you pull the power cord, the computer won’t forget the information saved on the disk.

• Data in memory is much faster, but not persistent: data in memory disappears when you exit your program or when the computer is turned off.

• Design trade-off: persistence x speed.

4.2. First: Read Data into Memory

4.3. Wow, Let’s Use a Data Train

• Array, list, vector are common names for a complete set of data.

• I only need a single variable for the entire data train.

4.4. Back to Surfing …

• We can create a list scores.

• To insert each new score, use .append().

• The top positions will be scores[0], scores[1], and scores[2].

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