Yancheng Shi@shiyanchFollow BadgesProblem SolvingJavaDays of Code CertificationsCertificate: Problem Solving (Basic)VerifiedskillWork Experienceshiyanch has not updated employment details yet.Educationshiyanch has not updated education details yet.Linksshiyanch has not updated links details yet. Skillsshiyanch has not updated skills details yet.