I would say Roughgarden's four CS Algorithms courses on Coursera are somewhat more advanced than CS50: https://www.coursera.org/specializations/algorithms https

I would say Roughgarden's four CS Algorithms courses on Coursera are somewhat more advanced than CS50: https://www.coursera.org/specializations/algorithms https://www.coursera.org/specializations/algorithms It covers foundational topics like asymptotic notation. However there is some reading required if you a C in high school calculus like me.