LIMA, Marcos; CARVALHO, Leandro Silva Galvão de; OLIVEIRA, Elaine Harada Teixeira de; OLIVEIRA, David Braga Fernandes; PEREIRA, Filipe Dwan. Difficulty classification of programming questions based on code metrics. In: BRAZILIAN SYMPOSIUM ON COMPUTERS IN EDUCATION (SBIE), 31. , 2020, Online. Anais [...]. Porto Alegre: Sociedade Brasileira de Computação, 2020 . p. 1323-1332. DOI: https://doi.org/10.5753/cbie.sbie.2020.1323.