Hi, here's your problem today. This problem was recently asked by Apple:

Given a list of words, and an arbitrary alphabetical order, verify that the words are in order of the alphabetical order.

Example:
Input:
<pre lang=py>
words = ["abcd", "efgh"], order="zyxwvutsrqponmlkjihgfedcba"
</pre>

Output: False
Explanation: 'e' comes before 'a' so 'efgh' should come before 'abcd'

Example 2:
Input:
<pre lang=py>
words = ["zyx", "zyxw", "zyxwy"],
order="zyxwvutsrqponmlkjihgfedcba"
</pre>

Output: True
Explanation: The words are in increasing alphabetical order

Here's a starting point:

<pre lang=py>
def isSorted(words, order):
  # Fill this in.

print isSorted(["abcd", "efgh"], "zyxwvutsrqponmlkjihgfedcba")
# False
print isSorted(["zyx", "zyxw", "zyxwy"],
               "zyxwvutsrqponmlkjihgfedcba")
# True
</pre>