• a.State the key feature that any data sequence should exhibit if run-length encoding (RLE) is to achieve good compression.

  (2 marks)

• b.The following data sequence represents an image, where each pixel has been encoded by a single character:

  AADACCFABAAEEFFFAEEE

  What is the RLE for this sequence? Hence briefly state whether this is an appropriate compression method to use for this particular sequence.

  (3 marks)