fig curves only of the solutions computed by the eight queens algorithm are essentially different the other ones can be derived by reflections about axes or the center point devise program that determines the principal solutions note thatfor examplethe search in column may be restricted to positions change the stable marriage program so that it determines the optimal solution (male or femaleit therefore becomes branch and bound program of the type represented by the program selection certain railway company serves stations sn- it intends to improve its customer information service by computerized information terminals customer types in his departure station sa and his destination sdand he is supposed to be (immediatelygiven the schedule of the train connections with minimum total time of the journey devise program to compute the desired information assume that the timetable (which is your data bankis provided in suitable data structure containing departure (arrivaltimes of all available trains naturallynot all stations are connected by direct lines (see also exercise the ackermann function is defined for all non-negative integer arguments and as followsa( nn ( ( - ( (mna( - (mn- )(mn design program that computes ( ,nwithout the use of recursion as guidelineuse the procedure nonrecursivequicksort from sec devise set of rules for the transformation of recursive into iterative programs in general references [ mcvitie and wilson the stable marriage problem comm acm no ( ) - [ mcvitie and wilson stable marriage assignment for unequal sets bit ( ) - [ space filling curvesor how to waste time on plotter software -practice and