Shimi Zhang@ctzsmUnited StatesFollowAboutCurrentHackerRankEducationChongqing University, Chongqing BadgesProblem SolvingCPPJavaPythonDays of CodeDays ofStatisticsSqlRuby Certificationsctzsm has not earned any certificates yet. Work ExperienceHackerRankEducationNorthwestern University, EvanstonComputer Science, MSChongqing University, ChongqingBS