攒人品，发面筋。面的是SDET职位。
见了6个人。
P1：
How could you test the amazon search page;
Write a function to return a set of duplicate numbers. Write test cases.
P2:
Assume amazon homepage downs every 3 days, each time throw out different
exceptions. How could you test it?
P3:
Write a function to return whether a file contains duplicate numbers.
P4:
How could you test the line drawing program?
P5:
Write a function to return the powerset of a set.
P6:
Are you working? Why amazon? Which company are you currently working with?
