-20, 19, 1, 27, 5, -1, 27, 19, 5

- What is the maximum of the collection?
- 27

- How did you figure this out?
- By scanning over the integers left to right and mentally keeping track of the largest seen so far.

A systematic procedure used to compute something is called an **algorithm**.
The procedure described in the answer is an *algorithm for finding the
maximum of a list*.
An algorithm is a description of how to do something.
It is not tied to any particular language.
For example, you (possibly) followed the above algorithm when you mentally
examined the list.
An algorithm can be *implemented* in any computer programming language.
Here is the above algorithm implemented in Java:

The variable `max`

should be initialized to a value that is
guaranteed to be no larger than the maximum element of the array.
A program should always work correctly, regardless of the quirks of the data.
Don't make assumptions about what the data look like.
(The initializer list is only for a convenience in this example;
a typical program would get its data from the user or from a file.)

Fill in the blank so that `max`

is initialized to a value
that is __guaranteed__ to be no larger than the maximum element of the array,
no matter what values are in the initializer list.