Changes

* Stage 1: upload your algorithm file to your ops435-a2 repository in github by July 17, 2019* Stage 2: upload your python script for this assignment to your ops435-a2 repository in github by July 24, 2019* Stage 3: After fully testing tested and debugged your python script for this assignment, update your programalgorithm, submit your python script ur_[student_id], and your test results to your ops435-a2 repository in github by July 31, 2019.py and * Stage 4: Submit your algorithm file and program design report ur_[student_id].pdf in pdf format on Blackboard python script to blackboard by August 2, 2019.