Hi all
I posted earlier on this but have changed my approach so here is my
latest attempt at solving a problem. I have been working on this for
around 12 hours straight and am still struggling with it.
Write a program that reads the values for a random list of cards from
a file, where each line in the file specifies a single card with the
rank and then the suit separated by a space. The rank should be an
integer in the range of 1 to 13 (Ace:1, King:13), while the suit
should be a lower case character in the set { 'h', 'd', 'c', 's' }.
Sort the card entries into suits ordered by rank, and print out the
ordered list. Hint: sort the list first by rank, and then by suit.
The format of the cards.txt file is;
1 h
1 d
13 c
10 s
and so on for the whole deck.
Can someone help me to get the mycomp function to work.
Any help appreciated
J
def read_cards(filename):
cards = []
for card in open(filename, 'r'):
# strip the trailing newline character
cards.append(card.strip())
return cards
filename = 'cards.txt'
cards = read_cards(filename)
def cards_str2tup(cards):
cards_tup = []
for card in cards:
rank, suit = card.split()
cards_tup.append((suit, int(rank)))
return cards_tup
def cards_tup2str(cards_tup):
cards = []
space = ' '
for tup in cards_tup:
suit, rank = tup
s = str(rank) + space + suit
cards.append(s)
return cards
def mycmp( a, b):
#define the order in which the characters are to be sorted
order = [ 'h', 'd', 'c', 's' ]
# if the characters from each element ARENT the same
if a[1] <> b[1]:
#return the result of comparing the index of each elements
character in the order list
return cmp( order.index( a[1] ), order.index( b[1] ) )
#otherwise
else :
#return the result of comparing each elements number
return cmp( a[0], b[0] )
cards.sort( mycmp )
#print cards
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