Abstract
In this chapter, you start learning some basics about a few mathematical operations, including prime numbers and the Roman numeral system. Additionally, I present a couple of ideas for number games. The chapter is rounded off by a short introduction to lambdas. With all this knowledge, you should be well prepared for the exercises.
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Notes
- 1.
List comprehension is the term used to describe an expression that generates a new result list based on a sequence of values and a calculation rule (see subsection 5.1.2).
- 2.
As an optimization, you actually only have to calculate up to the root. I briefly discuss this in the following practical tip “Possible optimizations.”
- 3.
Interestingly the value 0 does not exist in Roman numerals.
- 4.
For syntactically invalid Roman numbers, such as IXD, an incorrect result, here 489, can be computed by applying subtraction rule twice in a row: 0 − 1 − 10 + 500.
- 5.
For syntactically invalid Roman numbers, such as IXD, an incorrect result, here 489, can be computed by applying subtraction rule twice in a row: 0 − 1 − 10 + 500.
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Inden, M. (2022). Mathematical Problems. In: Python Challenges. Apress, Berkeley, CA. https://doi.org/10.1007/978-1-4842-7398-2_2
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DOI: https://doi.org/10.1007/978-1-4842-7398-2_2
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