MIT OpenCourseWare http://ocw.mit.edu6.00 Introduction to Computer Science and ProgrammingFall 2008 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms.Lecture 7 handout 6.00 Fall Term 2008 import math #Get base inputOK = False while not inputOK: base = input('Enter base: ') if type(base) == type(1.0): inputOK = True else: print('Error. Base must be floating point number.') #Get Height inputOK = False while not inputOK: height = input('Enter height: ') if type(height) == type(1.0): inputOK = True else: print('Error. Height must be floating point number.') hyp = math.sqrt(base*base + height*height) print 'Base: '+str(base)+',height: '+str(height)+', hyp: '+ str(hyp) def getFloat(requestMsg, errorMsg): inputOK = False while not inputOK: val = input(requestMsg) if type(val) == type(1.0): inputOK = True else: print(errorMsg) return val base = getFloat('Enter base: ', 'Error: base must be a float') height = getFloat('Enter height: ', 'Error: height must be a float') hyp = math.sqrt(base*base + height*height) print 'Base: ' + str(base) + ',height: ' + str(height) + ', hyp: ' + str(hyp) def exp1(a,b): ans = 1 while (b>0): ans *= a b -= 1 return ans def exp2(a,b): if b == 1: return a else: return a*exp2(a,b-1) def exp3(a,b):if b == 1: return a if (b%2)*2 == b: return exp3(a*a, b/2) else: return a*exp3(a,b-1) def g(n): x = 0 for i in range(n): for j in range(n): x += 1 return x def Towers(size,fromStack,toStack,spareStack): if size == 1: print 'Move disk from ',fromStack, 'to ',toStack else: Towers(size-1,fromStack,spareStack,toStack) Towers(1,fromStack,toStack,spareStack)
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