title: Compare strings based on alphabetical ordering
body: <p>Write a function that takes two strings as arguments and returns the one which is longer.  If the strings have equal length, return the one that comes first alphabetically.</p>
  
  <p>This is what i have so far:</p>
  
  <pre><code>    def strings(x,y):
          if len(x) &gt; len(y):
              return x
          if len(x)==len(y):
              return 
          else:
              return y
  </code></pre>
  
  <p>I am wondering how i would write the code so it would choose the string that comes first alphabetically for the second if statement.</p>