24 lines
851 B
Markdown
24 lines
851 B
Markdown
# Exercise 2.2 - Solution
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There is no official solution for this exercise--you need rely on your
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current Python knowledge. However, there are a few tips that can
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help.
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- For problems where you need to determine uniqueness, use a set. Sets aren't allowed to
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have duplicates.
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- If you need to tabulate data, consider using a dictionary that maps keys to a numeric
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count. For example, to count rides on each bus route, you could make a dictionary that
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maps the route name to the total ride count for that route. A `Counter` object from
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`collections` is perfect for this task.
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- If you need to keep data in order or sort data, store it in a list.
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- You can make Python data structures out of almost anything. For
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example, dictionaries of sets, nested dictionaries, etc. You might
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need to do this to answer questions 3 and 4.
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[Back](ex2_2.md)
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