title: Creating new list with values from two prior lists
body: <p>Given the lists  list1 and  list2 that are of the same length, create a new list consisting of the last element of  list1 followed by the last element of  list2 , followed by the second to last element of  list1 , followed by the second to last element of  list2 , and so on (in other words the new list should consist of alternating elements of the reverse of  list1 and  list2 ). For example, if  list1 contained  [1, 2, 3] and  list2 contained  [4, 5, 6] , then the new list should contain  [3, 6, 2, 5, 1, 4] . Associate the new list with the variable  list3 . </p>
  
  <p>My code: </p>
  
  <pre><code>def new(list1,list2):
      i = 0
      j = 0
      new_list = []
      for j in list1:
          new_list[i-1] = list2[j-1]
          i+= 1
          j += 1
          new_list[i-1] = list2 [j-1]
          i+= 1
          j += 1
      return new_list
  </code></pre>
  
  <p>I know, it's messy =_=, help?</p>