As personal computers become more powerful and ubiquitous, they are called upon to perform and solve an ever increasing number of tasks and problems. In order to solve these problems or perform tasks a computer must execute a computer program. The act of writing such a computer program can be very complex and difficult. Under the pressure of an ever-growing need for computer programs, genetic programming/evolutionary computing emerged as a promising method in which the computer itself performs this often daunting task of writing software.