50. Stack and queue using singly and doubly linked list

https://www.youtube.com/watch?v=wtf8egKAk9E

49. Main function modify

https://www.youtube.com/watch?v=N5h1KnK96cE

48. Doubly linked list remove last

https://www.youtube.com/watch?v=AfJpvLMTUAs

47. Doubly linked list remove first code +algo

https://www.youtube.com/watch?v=b-h8V71Rq84

46. Doubly linked list add first code

https://www.youtube.com/watch?v=_NfOQ_Xuoj8

46. Doubly linked list add first code

https://www.youtube.com/watch?v=_NfOQ_Xuoj8

45. Doubly linked list add first algorithm

https://www.youtube.com/watch?v=QqRVR-Y6MqQ

44. Doubly linked list add last code

https://www.youtube.com/watch?v=sfJWTNnmOhI

43. Doubly linked list add last algorithm

https://www.youtube.com/watch?v=suAyg4mGprQ

42. Doubly linked list intro

https://www.youtube.com/watch?v=qhHAeJG1f_0