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C# Fundamentals Part 4 Summary

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Defining Methods

• Methods allow for reusable, modular, readable, and efficient code.
• Method Definition: Consists of a signature (name, return type, parameters) and a body (code block).
• Calling Methods: Methods need to be explicitly called to execute.
• Return Types: Specify the type of data a method returns; void indicates no return value.
• Scope: Variables inside methods are local; they can only be accessed within that method.

Method Parameters

• Parameters allow methods to accept input values (arguments) and operate dynamically.
• Single Parameter: Methods can accept a single input.
• Multiple Parameters: Methods can accept multiple inputs, and the order of arguments matters.
• Reference Types: Passing arrays or lists to methods passes references, affecting original objects.

Designing Applications with Methods

• Stepwise Refinement: Breaking down complex tasks into smaller steps for method assignment.
• Modular Design: Creating organized, scalable, and manageable code by assigning specific tasks to methods.

Search Algorithms

• Search algorithms are procedures for locating specific data within larger datasets.
• Linear Search: Checks each element in a list until the target is found or the list ends.
• Binary Search: Efficiently searches sorted lists by repeatedly dividing the search interval in half.

Sorting Algorithms

• Sorting algorithms arrange data in a specific order for easier management and analysis.
• Selection Sort: Repeatedly finds and moves the smallest element to the beginning of the list.
• Bubble Sort: Repeatedly “bubbles” the largest unsorted element to the end of the list.