Reverse Polish, or Postfix notation is commonly used in Computer Science, particularly in reference to Stacks - but what are stacks and how does postfix work? Professor David Brailsford takes us through it.

Upside Down (Huffman) Trees: http://youtu.be/umTbivyJoiI
Quick Sort: http://youtu.be/XE4VP_8Y0BU
Getting Sorted: http://youtu.be/kgBjXUE_Nwc

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This video was filmed and edited by Sean Riley.

Computer Science at the University of Nottingham: http://bit.ly/nottscomputer

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