Norman Silverstone wrote:
> > Heh, you will find that Python is practically executable pseudo-code!
> >
> > Untested:
> >
> >
> > def guess_number():
> > # please don't cheat the poor computer...
> > print "Guess a number."
> > lo = 0
> > hi = 100
> > while True:
> > guess = (lo+hi)//2
> > ans = raw_input("Is it %d? y/n " % guess)
> > if ans in ('y', 'yes'):
> > break
> > ans = raw_input("Too high? y/n ")
> > if ans in ("y", "yes"):
> > hi = guess-1
> > else:
> > lo = guess+1
> >
> > This should run, and it will *almost* do what you want.
>
> Thanks for that but I think it is too simplistic. It appears OK for the
> first guess, which is 50 but, what about the next guess.
did you test the script? here's a simulator:
import re
number = 0
guess = None
count = 0
def raw_input(prompt):
global count, guess
reply = "n"
m = re.search("\d+", prompt)
if m:
# guess a number
count = count + 1
guess = int(m.group())
if guess == number:
reply = "y"
else:
# check if too high
if guess > number:
reply = "y"
print prompt, reply
return reply
def guess_number():
# please don't cheat the poor computer...
print "Guess a number."
lo = 0
hi = 100
while True:
guess = (lo+hi)//2
ans = raw_input("Is it %d? y/n " % guess)
if ans in ('y', 'yes'):
break
ans = raw_input("Too high? y/n ")
if ans in ("y", "yes"):
hi = guess-1
else:
lo = guess+1
for number in range(0, 100+1):
print "NUMBER IS", number
count = 0
guess_number()
print "SUCCESS AFTER", count, "GUESSES"
# end
> Comments please.
if this had been a java "let's pretend you're the java runtime" certification
question, you would have failed.
</F>
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