枫叶绕城
#!/usr/bin/python
def sqrt_iter(guess,x):
if(good_enough(guess, x)):
print guess
else:
sqrt_iter(improve(guess, x),x)
def improve(guess, x):
return average(guess, x/guess)
def average(x,y):
return (x+y)/2
def good_enough(guess,x):
if(abs(guess * guess -x) < 0.0001):
return True
else:
return False
def sqrt_oliver(x):
sqrt_iter(1.0,x)
sqrt_oliver(5)
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