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Jay See
6,880 PointsAny help on reverse evens?
Works in atom. Yes I know shouldn't use txt editor but no output here to debug so I cannot see why it is failing here.
def reverse_evens(arg):
nums = arg[:]
if (nums[-1] % 2) == 0:
return nums[::-2]
else:
return nums[-2::-2]
def odds(args):
odds = args[:]
return odds[1::2]
def first_4(arg):
first = arg[:]
return first[0:4]
def first_and_last_4(arg):
first = arg[:]
last = arg[:]
return first[0:4] + last[-4:]
3 Answers
Kenneth Love
Treehouse Guest Teacherdef reverse_evens(arg):
nums = arg[:]
if (nums[-1] % 2) == 0:
return nums[::-2]
else:
return nums[-2::-2]
Why are you checking if the last number is even or not?
Jay See
6,880 PointsI went from the position of thinking "I don't know whether the last number is even or not". So with that I worked literally in reverse and allowed the function to know if the last number was even or not to find a start point of where to reverse from.
I know it is a really inefficient and verbose route from looking at others solutions, I am just keen to know why it didn't pass?
Kenneth Love
Treehouse Guest TeacherThe challenge is to give a reversed list of items with an even index. The value of the item doesn't matter at all.