# Review for loop and while loop.
# Always trace through your code to make sure there is
# no *infinite* loop.


print('---- loop practice #1 ----')
# Write code the print every other int between 10 and 0
# (thus, do not include 10 and 0)
# note: for practice, write in 2 versions: for loop and while loop

print('for version ')
for i in range(9, 0, -2):
    print(i)

print('while version ')
i = 9
while i > 0:
    print(i)
    i -= 2


print('---- loop practice #2 ----')
# Write code the print every other int from 10 to 0
# (thus, can include 10 and 0)
# note: for practice, write in 2 versions: for loop and while loop

print('for version ')
for i in range(10, -1, -2):
    print(i)

print('while version ')
i = 10
while i > -1:
    print(i)
    i -= 2


print('---- loop practice #3 ----')
# Write code the print every other int from 10 to 0 but exclude 0
# (thus, can include 10, not include 0)
# note: for practice, write in 2 versions: for loop and while loop

print('for version ')
for i in range(10, 0, -2):
    print(i)

print('while version ')
i = 10
while i > 0:
    print(i)
    i -= 2