- https://www.youtube.com/watch?v=i1gHZ6QPOoA
- https://www.fullstack.cafe/
- https://www.amazon.com/gp/product/0984782850/ref=ox_sc_act_title_1?smid=ATVPDKIKX0DER&psc=1
- https://github.com/MaximAbramchuck/awesome-interview-questions
- https://github.com/jwasham/coding-interview-university
- Data Structure