Homework for Gaussian Elimination with tournament pivoting

Tournament pivoting homework (using the debugger)
Consider the example below. Use the Matlab debugger (or in Octave add lines with no semicolons to
appropriate places in the code) answer the following questions.
(a) At the end of the second game in the tournament which selects the pivoting for the first block
column, who are the challenger, players and winners.
(b) What is the four by two matrix inside the routine play_games for the last (or third) game used in
the competition to choose the winning rows for the first block column. If you are using Matlab
Include a printout of the variable editor window and workspace window.