Baba wrote:
> Thank You for helping me out. Indeed i am not looking for the code but > rather for hints that direct my reasoning as well as hints as to how > to write basic programs like this. > > You have broken down the approach into 2 parts. I have tried to solve > part 1 but i'm not quite there yet. Here's my code: > > def can_buy(n_nuggets): > for a in range (1,n_nuggets): > for b in range (1,n_nuggets): > for c in range (1,n_nuggets): > if 6*a+9*b+20*c==n_nuggets: > #print a,b,c,'n_nuggets=',n_nuggets > return True > else: > return False > > > can_buy(55) > > as you can see i am trying to loop through all combinations of values > bewtween 1 and n_nuggets and when the equation resolves it should > return True, else it should return False. > > I was hoping that when i then call my function and ask it to test a > value nothing happens. What is wrong? My syntax? My semantic? Both? First, the function gives up too early; it should only return False when all combinations of a, b, c (technically: the product of the ranges) have been tried. Second, can_buy(0) should return True, but the solution 0*6 + 0*9 + 0*20 is never tried; fix your ranges accordingly. Peter -- http://mail.python.org/mailman/listinfo/python-list
