[python response] Here's the solution I came up with for this interview question on interviewcake.com: "Write a function to reverse a string in place. 'In place' means 'without creating a new string in memory.'" http://www.interviewcake.com/question/reverse-string-in-place

reverso.py

import sys

def reverso(str):
  i = 0
  str_len = len(str) - 1
  str = list(str)
  half_len = len(str)/2

  for x in str:
    temp = x
    str[i] = str[str_len]
    str[str_len] = temp
    str_len -= 1
    i += 1

    if half_len == str_len:
      print "".join(str)

reverso(sys.argv[1])