An algorithm is a computer program that:

Question

BlackTom AI · Accepted Answer

An algorithm is a precise, finite procedure made up of ordered instructions that solves a problem or performs a task, so...

1) Relevant knowledge points and concepts
- Definition: an algorithm is a step-by-step set of rules or instructions for solving a class of problems or performing computations.
- Algorithms are implementation-independent concepts; they can be realized in code, formulas, or flowcharts.
- Example domain: search engines use algorithms to rank, sort, and display results based on relevance signals.

2) Step-by-step reasoning
- Start with the textbook meaning: algorithms specify how to transform inputs into outputs via a sequence of operations.
- Consider each answer choice and ask whether it matches that general meaning.
- B describes "rules to sort, rank, order and display web page listings" — that is precisely a set of ordered rules, i.e., an algorithm applied to search results.
- The other choices describe specific systems, jokes, or tasks that are not the general definition of an algorithm.

3) Calculations / intermediate steps
- No numeric calculations are needed; the logical comparison of definitions is the intermediate reasoning.

4) Why the correct answer is correct
- Option B describes a concrete example of an algorithm: a ranking algorithm. It explicitly uses the language "rules to sort, rank, order," which are the ordered instructions that constitute an algorithm. Search engine ranking is a well-known application of algorithms, so B aligns exactly with the definition.

5) Why the other options are incorrect
- A is a humorous, specific nonsensical statement (not a definition).
- C ("calculates ROI for internet sites") describes one possible application (a specific computation) but is not the general definition of an algorithm.
- D ("searches website pages") is closer to the role of a web crawler or search tool; searching can be performed by an algorithm, but the phrase describes a specific function rather than the general concept of a set of rules.

6) Conclusion
- Therefore the best and correct choice is B, which matches the provided answer.

An algorithm is a computer program that:单项选择题

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