Representing Algorithms
Bayani Gaba-gaba
Somebody who has never seen your kitchen can still cook your grandmother's stew, because the recipe does not depend on who is holding the spoon. It lists what goes in, what to do in what order, and what you should have at the end. Change the cook and the stew is the same. That transferability is the whole point, and it is also the whole point of an algorithm: a set of steps precise enough that following them blindly still produces the right result.
This lesson gives you the three words the specification opens with, and they are the three that everything else in the course leans on. An algorithm is the method. Decomposition is breaking a problem that is too big to think about into pieces that are not. Abstraction is deliberately throwing away the detail that does not matter so that the part that does becomes visible. Then you will learn to write a method down twice over, once as pseudocode and once as a flowchart, using the exact conventions the examiners use, and to read somebody else's algorithm closely enough to say what it is for.
Manufura
- Understand and explain the term algorithm.
- Understand and explain the term decomposition.
- Understand and explain the term abstraction.
- Use a systematic approach to problem solving and algorithm creation representing those algorithms using pseudocode and flowcharts.
- Explain simple algorithms in terms of their inputs, processing and outputs.
- Determine the purpose of simple algorithms.
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Nazarin Darasi
Barka da kammala darasi akan Representing Algorithms. Yanzu da kuka bincika mahimman raayoyi da raayoyi, lokaci yayi da zaku gwada ilimin ku. Wannan sashe yana ba da ayyuka iri-iri Tambayoyin da aka tsara don ƙarfafa fahimtar ku da kuma taimaka muku auna fahimtar ku game da kayan.
Za ka gamu da haɗe-haɗen nau'ikan tambayoyi, ciki har da tambayoyin zaɓi da yawa, tambayoyin gajeren amsa, da tambayoyin rubutu. Kowace tambaya an ƙirƙira ta da kyau don auna fannoni daban-daban na iliminka da ƙwarewar tunani mai zurfi.
Yi wannan ɓangaren na kimantawa a matsayin wata dama don ƙarfafa fahimtarka kan batun kuma don gano duk wani yanki da kake buƙatar ƙarin karatu. Kada ka yanke ƙauna da duk wani ƙalubale da ka fuskanta; maimakon haka, ka kallesu a matsayin damar haɓaka da ingantawa.
- Which statement about algorithms and programs is correct? A. Every algorithm is a computer program B. An algorithm is a method, and a program is one implementation of it C. A program can implement only one algorithm D. Algorithms can only be written in pseudocode Answer: B
- A designer replaces a detailed street map with a simplified diagram that shows only which roads connect to which junctions. Which term describes what has been done? A. Abstraction B. Decomposition C. Iteration D. Validation Answer: A
- In the OxfordAQA pseudocode used in assessment material, which symbol means assignment? A. == B. = C. A left arrow D. := Answer: C
- Which flowchart shape is used for a decision? A. A diamond B. A parallelogram C. A rectangle D. A rounded box Answer: A
- An algorithm reads a list of numbers from a text file, finds their total, and writes the total to the screen. How many inputs and how many outputs does it have? A. 0 inputs and 1 output B. 1 input and 1 output C. 1 input and 0 outputs D. 2 inputs and 1 output Answer: B
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