Representing Algorithms
Gbogbo ọrọ náà
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.
Ebumnobi
- 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.
Maapụ uche
E seela isiokwu a ka ị hụ otu echiche si ejikọta.
Mepee maapụ uche na ngwa
Akwụkwọ Ọmụmụ
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Nnyocha Ọmụmụ
Ekele diri gi maka imecha ihe karịrị na Representing Algorithms. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- 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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Rue ajuju ndi a n'ime ngwa ahu
Akwụkwọ A Na-atụ Aro
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Representing Algorithms? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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