title: How to interleave items from 2 lists backward
body: <p>Word Problem:</p>
  <p>Create a function to interleave the letters of two strings (starting with the first string from right to left) and return the resultant string.</p>
  <pre><code>def interleave(s1: str, s2: str) -&gt; str:
  </code></pre>
  <p>I was able to solve this word problem but I need help putting it in a function</p>
  <pre><code>def interleave(s1: str, s2: str) -&gt; str:
      string1 = s1[::-1]
      string2 = s2[::-1]
  
      for i in range(len(string1)):
          print(string2[i] + string1[i], end = &quot;&quot;)
      
      return print
  
  print(interleave(&quot;1234&quot;, &quot;5678&quot;))
  </code></pre>