Bulls and cows/Player: Difference between revisions
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raw_input = input |
raw_input = input |
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try: |
try: |
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izip |
from itertools import izip |
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except: |
except: |
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izip = zip |
izip = zip |
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answers = [] |
answers = [] |
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scores = [] |
scores = [] |
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found = False |
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print ("Playing Bulls & Cows with %i unique digits\n" % size) |
print ("Playing Bulls & Cows with %i unique digits\n" % size) |
Revision as of 14:37, 13 June 2010
![Task](http://static.miraheze.org/rosettacodewiki/thumb/b/ba/Rcode-button-task-crushed.png/64px-Rcode-button-task-crushed.png)
You are encouraged to solve this task according to the task description, using any language you may know.
The task is to write a player of the Bulls and Cows game, rather than a scorer. The player should give intermediate answers that respect the scores to previous attempts.
Python
<lang python> from itertools import permutations from random import shuffle
try:
raw_input
except:
raw_input = input
try:
from itertools import izip
except:
izip = zip
digits = '123456789' size = 4
def parse_score(score):
score = score.strip().split(',') return tuple(int(s.strip()) for s in score)
def scorecalc(guess, chosen):
bulls = cows = 0 for g,c in izip(guess, chosen): if g == c: bulls += 1 elif g in chosen: cows += 1 return bulls, cows
choices = list(permutations(digits, size)) shuffle(choices) answers = [] scores = []
print ("Playing Bulls & Cows with %i unique digits\n" % size)
while True:
ans = choices[0] answers.append(ans) #print ("(Narrowed to %i possibilities)" % len(choices)) score = raw_input("Guess %2i is %*s. Answer (Bulls, cows)? " % (len(answers), size, .join(ans))) score = parse_score(score) scores.append(score) #print("Bulls: %i, Cows: %i" % score) found = score == (size, 0) if found: print ("Ye-haw!") break choices = [c for c in choices if scorecalc(c, ans) == score] if not choices: print ("Bad scoring? nothing fits those scores you gave:") print (' ' + '\n '.join("%s -> %s" % (.join(an),sc) for an,sc in izip(answers, scores))) break</lang>
Sample output
Playing Bulls & Cows with 4 unique digits Guess 1 is 1935. Answer (Bulls, cows)? 0,2 Guess 2 is 4169. Answer (Bulls, cows)? 0,3 Guess 3 is 6413. Answer (Bulls, cows)? 1,1 Guess 4 is 9612. Answer (Bulls, cows)? 1,1 Guess 5 is 9481. Answer (Bulls, cows)? 3,0 Guess 6 is 9471. Answer (Bulls, cows)? 4,0 Ye-haw!
Sample bad output
If the scores are inconsistent you get output like:
Playing Bulls & Cows with 4 unique digits Guess 1 is 1549. Answer (Bulls, cows)? 0,0 Guess 2 is 3627. Answer (Bulls, cows)? 1,0 Bad scoring? nothing fits those scores you gave: 1549 -> (0, 0) 3627 -> (1, 0)