* feat: add Swift codes for graph_traversal article * refactor: rename parameters * Update graph_dfs.swift --------- Co-authored-by: Yudong Jin <krahets@163.com>
* refactor: extract Vertex and use Array<Vertex> * docs: add chapter to Package.swift * Update graph_adjacency_list.swift --------- Co-authored-by: Yudong Jin <krahets@163.com>