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Recursion is a divide-and-conquer strategy used in computer science to simplify problems into manageable components. It is implemented in dynamic programming, array manipulation, security features, graphic design, and sorting algorithms. Recursion allows for modular software development and is a powerful tool in software automation.
In computer science, many problems require a divide-and-conquer strategy. The recursion technique uses this strategy. In its simplest form, recursion is a function that divides a problem into smaller problems until the final product can be determined. Computer science was founded on a platform of mathematics and logic. Recursion has been part of this bigger picture for many decades and can be found in most computer programming languages today.
Dynamic programming is an implementation of recursion, which breaks a problem into components. This process allows problems to be nested within larger problems where each subproblem requires the result of the previous problem. This type of functional recursion is typical within array manipulation.
This style of programming is beneficial because it simplifies a problem into manageable components. It also has the advantage of modular software development. This modular approach allows for the creation of reusable components in a computer application.
Recursion works well when building security features within computer applications. Each screen of an application can require specific business rules that determine whether fields should be visible. Rather than writing an individual security code on each screen, you can create a recursive function to read all screens before returning the data to the user and applying the necessary visibility restrictions.
Graphic design is another area that is well suited to a recursive problem. Imagine a program designed to create a square within a square. The smaller square would have the same functional requirements as the larger square with the only change in the dimensions of the two squares.
A sorting algorithm is a logic problem where a list of items must be sorted in a specific order. This type of troubleshooting involves continually shuffling a list into a new list, until the final list is sorted as desired. A good approach to solve this problem is to create a recursive loop that keeps shuffling the list until it is sorted into the final list.
The power of software automation makes the use of recursion seem trivial to most system owners. Security features and column sorting are typically expected to require a simple mouse click or keystroke. Under the covers of this simple action lies the complexity and elegance of recursion in practice.
