Depth-First Search Courses
Peking University via Coursera 算法基础 | Fundamental Algorithms
Peking University via edX 算法基础
Peking University via Coursera Graph Search, Shortest Paths, and Data Structures
Stanford University via Coursera Data Structures and Algorithms
Georgia Institute of Technology via edX Python Data Structures and Algorithms
LinkedIn Learning Searching & Sorting Algorithms
Udemy Graph Theory
YouTube Advanced Algorithms (Graph Algorithms) in Java
Udemy Mastering Coding Interviews & Competitions
Udemy