PDF | On Aug 1, , Nicholas Bennett and others published Introduction to Algorithms and Pseudocode. Pseudo-code is an informal way to express the design of a computer program or an algorithm in. The aim is to get the idea quickly and also easy to read. Pseudo Code Practice Problems: Listed below is a brief explanation of Pseudo code as well as a list of examples and solutions. Pseudo code. Pseudo code can .
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ALGORITHMS, FLOWCHARTS, DATA TYPES. AND PSEUDOCODE. ALGORITHMS. The term algorithm originally referred to any computation performed via. What is Pseudocode? An algorithm is a sequence of instructions to solve a well- formulated computational problem specified in terms of its input and output. Pseudocode What is pseudocode? Pseudocode is a simplified, half-English, half-code outline of a com- puter program. Why use it? • Because it can help.
Each statement in your pseudocode should express just one action for the computer. In most cases, if the task list is properly drawn, then each task will correspond to one line of pseudocode.
Consider writing out your task list, then translating that list into pseudocode, then gradually developing that pseudocode into actual, computer-readable code. Use white space and indentation effectively.
Using white spaces between "blocks" of text will help keep different components of your pseudocode isolated, and indenting different pieces of each block will indicate that those pieces of pseudocode go under a less-indented section. For example, a section of pseudocode that discusses entering a number should all be in the same "block", while the next section e.
Capitalize key commands if necessary. Depending on your pseudocode requirements or the environment in which you're publishing the pseudocode, you may need to capitalize commands that will remain in the actual code. For example, if you use "if" and "then" commands in your pseudocode, you might want to change them to read "IF" and "THEN" e. Write using simple terminology. Remember, you're writing about what the project will do , not summarizing the code itself.
This is especially important if you're writing pseudocode to serve as a demonstration for a customer who doesn't know coding, or as a project for a beginner programmer.
Keep your pseudocode in the proper order.
While the language you use to modify your pseudocode should be simple, you still need to keep each piece of your pseudocode in the order in which it needs to be executed. Leave nothing to the imagination. Everything that is happening in the process must be described completely. Pseudocode statements are close to simple English statements.
Pseudocode does not typically use variables, but instead describes what the program should do with close-to-real-world objects such as account numbers, names, or transaction amounts.
Even if there is no standard for pseudocode, it will be easier for other programmers to understand your steps if you use structures from existing sequential programming languages. Consider the following structures: Organize your pseudocode sections. If you have large sections of pseudocode that define other pieces of pseudocode within the same block, you may want to use brackets or other identifiers to keep everything contained.
Brackets—both standard e. You can use this same method when writing pseudocode to leave notes that don't fit into the coding text.
Double-check your pseudocode for readability and clarity. You should be able to answer the following questions by the end of the document: Would this pseudocode be understood by someone who isn't familiar with the process? Is the pseudocode written in such a way that it will be easy to translated it into a computing language? Does the pseudocode describe the complete process without leaving anything out?
Is every object name used in the pseudocode clearly understood by the target audience? If you find that a section of pseudocode needs elaboration or it doesn't explicitly outline a step that someone else might forget, go back and add the necessary information. Open a plain-text editor. Define your program. While not strictly necessary, writing a one- or two-sentence line at the top of the document will make clear from the beginning the intent of the program: This program will request a greeting from the user.
If the greeting matches a specific response, the response will be delivered; if not, a rejection will be delivered. Write the opening sequence. Your first command—that is, the first thing your program should do upon running—should be the first line: Add the next line.
In this example, the user should prompt the next line of dialogue: Add the call to action. In this example, the user will be prompted for a greeting: Show the user a list of responses.
Not good. Request input from the user. This is where the program will ask the user to enter a response: Create "if" commands for the user's input. Since there are multiple responses the user can select, you'll want to add multiple results based on their selected response: Add an error message. In the event that the user incorrectly chooses a response, you can have an error message ready: Add any other components of the program. Go through your document and add or flesh out any details to ensure that both you and anyone reading the document will understand its meaning.
As per this method's example, your final pseudocode document should look something like this: Save your document. Pseudocode isn't real code, but details what a program should do step by step.
Knowing how to write code is necessary to writing meaningful and useful pseudocode. Yes No.
Not Helpful 21 Helpful How can I tell the difference between an odd and even number using pseudocode? Divide it by two to see if you get a remainder.
If not, then it's even; if yes, then it's odd. Not Helpful 25 Helpful Since pseudocode isn't real code, there can't be any errors. You decide what you want to write as pseudocode and then translate it to any coding language you'd like.
Not Helpful 9 Helpful When you start jotting it down it can be anything from a notepad to a napkin or a dedicated writing application like Word or Google Docs.
They can only interpret. You cannot run code with just raw text. Remember to make it a dev file first. Not Helpful 15 Helpful It isn't exactly necessary, but knowing pseudocode helps in learning how to program faster.
Not Helpful 8 Helpful Not Helpful 38 Helpful Verbal works in this context: Can I use words such as "count" to sum up data in writing a pseudocode?
You can do whatever you like in pseudocode! Each textbook and each individual designer may have their own personal style of pseudocode. Pseudocode is not a rigorous notation, since it is read by other people, not by the computer. There is no universal "standard" for the industry, but for instructional purposes it is helpful if we all follow a similar style. The format below is recommended for expressing your solutions in our class.
Each of these constructs can be embedded inside any other construct.
These constructs represent the logic, or flow of control in an algorithm. It has been proven that three basic constructs for flow of control are sufficient to implement any "proper" algorithm.
WHILE is a loop repetition with a simple conditional test at its beginning. CASE is a multiway branch decision based on the value of an expression. FOR is a "counting" loop.