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A predator-prey simulation involving predators and prey in
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A predator-prey simulation involving animals and plants in
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A predator-prey simulation involving animals and plants in
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Project: predator and prey simulation
Authors: Reibjok Othow and Kwan Yui Chiu

This project is part of the material for chapter 10 of the book

   Objects First with Java - A Practical Introduction using BlueJ
   Sixth edition
   David J. Barnes and Michael Kölling
   Pearson Education, 2016

A predator-prey simulation involving animals and plants in
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an enclosed rectangular field.

This is the first version of the simulation. This version
does not use inheritance.

How to start:
    Create a Simulator object.
    Then call one of:
        + simulateOneStep - for a single step.
        + simulate - and supply a number (say 10) for that many steps.
        + runLongSimulation - for a simulation of 500 steps.