Trees - Data Structures and Abstractions with Java - page 567

23.3

Example: A university's organization. Corporations, schools, churches, and governments all orga-
nize their staff hierarchically. For example, Figure 23-3 shows a portion of the administrative structure
of a typical university. All offices ultimately report to the president. Immediately beneath the president
are three vice presidents. The Vice President for Academic Affairs, for example, oversees the deans of
the colleges. The deans in turn supervise the chairs of the various academic departments, such as com-
puter science and accounting.

FIGURE 23-3

A portion of a university's administrative structure

President

Vice President for
Academic Affairs

Vice President for
Business Affairs

Vice President for
Student Affairs

Dean of
Arts and Sciences

Dean of
Engineering

Dean of
Business

Chair of
Computer Science

Chair of
Computer Engineering

Chair of
Accounting

23.4

Example: File directories. Typically, you organize the files on your computer into folders, or direc-
tories. Each folder contains several other folders and / or files. Figure 23-4 shows the organization of
the folders and files on Paul's computer. This organization is hierarchical. That is, all of Paul's files
are organized within folders that are ultimately within the folder myStuff . For example, to look at
his budget, Paul would start with the folder myStuff , find the folder home , and finally locate the file
budget.txt .

FIGURE 23-4

Computer files organized into folders

myStuff

home work

play school

budget.txt