COM 1205 Assignment #1.
Due: Thursday, 20 January 1999

Write Histogram.java, which is a file of Java code that goes
in the statistics package, defines a public class named Histogram,
and defines a public static method

    public static java.util.HashMap frequencies (String s);

that, given a String s, returns a HashMap h such that

    1.  For every Object x, h.containsKey(x) if and only if
        there exists a char c such that c occurs within s and
        x.equals(new Character (c)).

    2.  For every char c, if c occurs within s then

        h . get (new Character (c)) . equals (new Integer (n))

        where n is the number of times that the char c occurs
        within s.

Every student in the class is required to write his or her own
code.  To submit a program that is derived in part from code
written by someone else, but without proper acknowledgement,
will be regarded as plagiarism, which is a serious breach of
Northeastern University's Academic Code of Conduct.  Every
person in the class is responsible for keeping his or her
code hidden from other teams.  Part of your grade for this
assignment is determined by how well you do this.

On the other hand, anyone in the class may ask anyone about
the Java language and other system issues.

Turn in your program before 4 pm on the due date by sending
electronic mail to

    will@ccs.neu.edu

with subject

    assignment #1

and a body that consists of the following, in this order:

    1.  Your name.
    2.  Any remarks that you wish to make to the instructor.
    3.  A line consisting of exactly 50 hyphens.
    4.  Your code for this assignment.

Late assignments may be discounted, and very late assignments may
be discarded.