THIS IS GNU OCTAVE QUESTION

4. Write a function that takes an adjacency list representation of a graph as a cell array and returns its edge-node listing representation as a matrix having two columns that holds edge information and a single number that gives the number of nodes. Example: Input cell array: {[2,4,5),(1,2,3,4),(2,4),(1,3,5,2),(4,5,1],[]} Output: N=6 12 14 15 22 23 24 314 4 15 55 Hints: Edges in the output matrix appears as unordered pairs. For example (1,2) and (2,1) represents the same edge. So it does not matter which one is used. While writing your function be careful that an edge will appear just once in the output edge matrix. For example, if a row contains (1,4), this should not appear again as neither (1,4) nor (4,1). Rows of the edge matrix do not have to be in the order shown in the example. As long as all edges are listed they can be shown in any order. For example, it would be fine if the edge matrix were given as follows. So feel free to create it any row order that you want. ALSO TEST YOUR FUNCTION WITH THE "Input cell array" above (the result should be the "Output" above) and take a screenshot of your OCTAVE, MATLAB or OCTAVE ONLINE screen and include it in your answer. NO SCREENSHOT = 0 marks for this