December 2017
Beginner
412 pages
10h 8m
English
Content preview from Practical Programming, 3rd Edition
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Searching for the Two Smallest Values
This section will explore how to find the index of the two smallest items in an unsorted list using three quite different algorithms. We’ll go through a top-down design using each approach.
To start, suppose we have data showing the number of humpback whales sighted off the coast of British Columbia over the past ten years:
|
809 |
834 |
477 |
478 |
307 |
122 |
96 |
102 |
324 |
476 |
The first value, 809, represents the number of sightings ten years ago; the last one, 476, represents the number of sightings last year.
We’ll start with a simpler problem: what is the smallest value during those years? This code tells us just that:
| | >>> counts = [809, 834, 477, 478, |
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