장지환 @jjh508Follow BadgesProblem SolvingDays of Code CertificationsCertificate: Problem Solving (Basic)VerifiedskillWork Experiencejjh508 has not updated employment details yet.Educationjjh508 has not updated education details yet.LinksGithubhttps://github.com/tmxkwkfgka Skillsjjh508 has not updated skills details yet.