###Find the cube root of a perfect cube ##x = int(raw_input('Enter an integer: ')) ##ans = 0 ##while ans*ans*ans < abs(x): ## ans = ans + 1 ## #print 'current guess =', ans ##if ans*ans*ans != abs(x): ## print x, 'is not a perfect cube' ##else: ## if x < 0: ## ans = -ans ## print 'Cube root of ' + str(x) + ' is ' + str(ans) ###Find the cube root of a perfect cube ##x = int(raw_input('Enter an integer: ')) ##for ans in range(0, abs(x)+1): ## if ans**3 == abs(x): ## break ##if ans**3 != abs(x): ## print x, 'is not a perfect cube' ##else: ## if x < 0: ## ans = -ans ## print 'Cube root of ' + str(x) + ' is ' + str(ans) ## ##x = 25 ##epsilon = 0.01 ##numGuesses = 0 ##ans = 0.0 ##while abs(ans**2 - x) >= epsilon and ans <= x: ## ans += 0.00001 ## numGuesses += 1 ##print 'numGuesses =', numGuesses ##if abs(ans**2 - x) >= epsilon: ## print 'Failed on square root of', x ##else: ## print ans, 'is close to square root of', x ## ##x = 12345 ##epsilon = 0.01 ##numGuesses = 0 ##low = 0.0 ##high = x ##ans = (high + low)/2.0 ##while abs(ans**2 - x) >= epsilon and ans <= x: ## #print low, high, ans ## numGuesses += 1 ## if ans**2 < x: ## low = ans ## else: ## high = ans ## ans = (high + low)/2.0 ###print 'numGuesses =', numGuesses ##print ans, 'is close to square root of', x ##def withinEpsilon(x, y, epsilon): ## """x, y, epsilon all ints or floats ## returns true if x is within epsilon of y""" ## return abs(x - y) <= epsilon ## ##if withinEpsilon(25, 26, 1): ## print 'yes' ##else: ## print 'no' ## ##if withinEpsilon(25, 26, 0.9): ## print 'yes' ##else: ## print 'no'