Writing & Amending Algorithms | Computer for GCSE/IGCSE - Year 11 PDF Download

Writing & Amending Algorithms

Creating algorithms for a given problem involves following several stages:

• It's essential to thoroughly analyze and grasp the problem, clearly defining the requirements and objectives of the algorithm.
• Breaking down the problem into manageable sub-problems is crucial. Complex issues may necessitate multiple layers of sub-problems, each requiring their own algorithms. Developers must consider inputs, outputs, processes, and potential long-term data storage for each sub-problem.
• Careful consideration should be given to data gathering, storage, processing, and output presentation. Questions such as how data will be inputted (via input boxes or file uploads), stored, processed, and displayed (on a form, webpage, or in a file) need to be addressed.
• Visualizing the structure of the problem and its subproblems can be beneficial. Creating a structured diagram outlining the breakdown and hierarchy of sub-problems can provide clarity.
• Once each sub-problem is identified, algorithms can be devised using flowcharts or pseudocode. These algorithms should be straightforward, easy to understand, and utilize clear and meaningful variable names. Employing concise mathematical symbols like "=" or "<=" enhances readability.
• Testing the algorithm with various sets of data is essential. This includes normal, abnormal, extreme, and boundary data. Results should be recorded in a trace table, facilitating error detection.
• Any errors encountered during testing should be addressed, and the algorithm should be retested to ensure it operates as intended.