6-1 + 6-2

#! /usr/bin/env python3.2
# -*- coding: utf-8 -*-

# main.py
""" Task: Exercise 6.1
    Write a while loop that starts at the last character in the string and
    works its way backwards to the first character in the string, printing each
    letter on a separate line, except backwards.

    fruit = 'banana'
    index = 0
    while index < len(fruit):
        letter = fruit[index]
        print(letter)
        index = index + 1
"""

''' Main '''
fruit = 'banana'
index = len(fruit) - 1
while index >= 0:
    letter = fruit[index]
    print(letter)
    index -= 1

fruit = 'B' + fruit[1:]

print(fruit[:]) # Exercise 6.2, output: 'Banana'