Read e-book online Computing Patterns in Strings PDF

By William Smyth

ISBN-10: 0201398397

ISBN-13: 9780201398397

The computation of styles in strings is a basic requirement in lots of parts of technology and knowledge processing. The operation of a textual content editor, the lexical research of a working laptop or computer software, the functioning of a finite automaton, the retrieval of data from a database - those are all actions that may require that styles be situated and computed. In different components of technological know-how, the algorithms that compute styles have functions in such varied fields as information compression, cryptography, speech reputation, desktop imaginative and prescient, computational geometry and molecular biology.

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Of particular value is the Java application programming interface, more commonly referred to as the Java API. The Java API is also called the Java class library; it contains information about how to use every prewritten Java class, including lists of all the methods you can use with the classes. com Web site are frequently asked questions (FAQs) that provide brief answers to many common questions about Java software and products. You can also find several versions of the Java Development Kit (JDK) that you can download for free.

In Java, the reserved keyword static means that a method is accessible and usable even though no objects of the class exist. Of course, other classes eventually might have their own, different main() methods. ) 14 C H A P T E R O N E public is an access modifier. static means this method works without instantiating an object of the class. args is the identifier of the array of Strings that is the argument to this method. void is the method’s return Method header Method body public class First type; it returns nothing.

Thinking in an object-oriented manner involves envisioning program components as objects that belong to classes and are similar to concrete objects in the real world; then, you can manipulate the objects and have them interrelate with each other to achieve a desired result. If you’ve ever used a computer that uses a command-line operating system (such as DOS), and if you’ve also used a graphical user interface (GUI), such as Windows, then you are familiar with one of the differences between procedural and object-oriented programs.

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