idiotic reverse of words in a list

gistfile1.txt

while exists words:
  if first word == second word:
    exit()
  i := start of first word
  j := start of last word
  if length of first word != length of last word:
    MAGIC_SPECIAL_CASE()
  len := length of first word
  for len: swap(str[i++], str[j--])
  bounds are now second word and second last word