Nguyễn Trọng Khải@trongkhai2598Follow BadgesProblem SolvingJava CertificationsCertificate: Problem Solving (Basic)VerifiedskillWork Experiencetrongkhai2598 has not updated employment details yet.EducationVietnam National University Hanoi, Hà NộiLinksLinkedinhttps://www.hackerrank.com/trongkhai2598 Skillstrongkhai2598 has not updated skills details yet.