YUN ZHANG@zyajnokidFollow BadgesProblem SolvingJavaPythonDays of CodeDays ofStatisticsSql CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Advanced)VerifiedskillCertificate: SQL (Basic)VerifiedskillWork Experiencezyajnokid has not updated employment details yet.EducationStanford University, StanfordMathematicsLinksPortfoliohttps://www.linkedin.com/in/zhang-yun/ Skillszyajnokid has not updated skills details yet.