To: juanfelipebeltran
Subject: some more notes


We are given a bunch of people who have the disease now
and some who don't.
We want to find out who is the source of the disease.
We assume that diseases will travel if an infected person meets
a non-infected one but we don't know when people got the disease.

Some exercises:


Given an array of num affected, num uninfected
with each row representing a different day,
see how the rates of infection change per day.

See how hospital beds fill up and graph them.

Create a website that allows people to indicate whether they are sick.

Sort the people's names so you can have a list of them.

Given a table indicating person A met person B on a certain day,
form an associative array representing the same information.

Now try starting from a person x who has the disease to determine whether
it is possible that the current people have the disease.
Start from each such person.

