Stack and Queue

Stack Concepts

[embedyt] https://www.youtube.com/watch?v=5NsaDN7W8cM[/embedyt]

Questions on Stack Part_1

[embedyt] https://www.youtube.com/watch?v=bvQr-A9risk[/embedyt]

Questions on Stack Part_2

[embedyt] https://www.youtube.com/watch?v=jTDbG0w2JrY[/embedyt]