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8.1
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8.1
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###Question 1
def mystery(x, y):
result = (x + y) / (y - x)
return result
print(mystery(2,3))
##Question 2
def main():
a = 5
b = 7
print(mystery(a, b))
def mystery(x, y):
z = x + y
z = z / 2.0
return z
main()
## Question 3
def main():
a = 4
print(mystery(a + 1))
def mystery(x):
y = x * x
return y
main()
##Question 4
def evenPage(p):
if p % 2 == 0:
return True
else:
return False
p = int(input('Please input a page number: '))
if evenPage(p) == True:
print(p)
else:
print("%60s%d" % (" ", p))
##Question 5
def count_spaces(userinput):
spaces = 0
for char in userinput:
if char == " ":
spaces = spaces + 1
return spaces
def main():
userInput=input('enter sentence: ')
s = count_spaces(userInput)
print(s)
main()
###Question 6
def mystery(n):
if n <= 0 :
return 0
else:
return n + mystery(n - 1)
def main():
print(mystery(4))
main()
##question 7
def mystery(n) :
if n <= 0 :
return 0
else:
return mystery(n // 2) + 1
def main():
print(mystery(20))
main()
##Question 9
def f(a) :
if a < 0 :
return -1
n = a
while n > 0:
if n % 2 == 0: # n is even
n = n // 2
elif n == 1:
return 1
else:
n = 3 * n + 1
return 0
def main():
t = f(-1)
print(t)
t = f(0)
print(t)
t = f(1)
print(t)
t = f(2)
print(t)
t = f(10)
print(t)
t = f(100)
print(t)
main()