# Week 9 practice problems, by chaynes@indiana.edu

def emphasize(string):
    """
    Return a string with the characters in the given string separated by
    spaces and all upper case.
    
    >>> emphasize('The Knights said Ni!')
    'T H E   K N I G H T S   S A I D   N I !'
    >>>
    """
    # Hint: recall the string method upper()
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def whats_it_return():
    """
    >>> whats_it_return() 
    #...
    >>>
    """
    i = 0
    s = '[812]123-4567'
    while i <= 10:
        if s[i:].isdigit():
            return i
        i = i + 1
    return -1

def surname_first(name):
    """
    Takes a name string of the form "<first name> <last name>" and returns a
    string of the form "<last name>, <first name>".
    
    >>> surname_first("John Cleese")
    'Cleese, John'
    >>>
    """
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def given_name_first(name):
    """
    Takes a name string of the form "<last_name>,<whitespace><first_name>",
    where <whitespace> may be any number (possibly zero) of spaces,
    and returnsa string of the form first_name last_name. 

    >>> given_name_first("Cleese,John")
    'John Cleese'
    >>> given_name_first("Cleese,  John")
    'John Cleese'
    >>> 
    """
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def inches(length):
    """
    Return the number (an integer) of inches in the length string 
    measurement.. Assume the string format is <feet>'[<inches>], where <feet> 
    and <inches> are both non-empty sequences of digits, and <inches> is
    optional.

    >>> inches("1'3") # one foot three inches
    15
    >>> inches("2'") # two feet
    24
    >>>
    """
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def minutes(time):
    """
    Return the number of minutes indicated by the time string, which is
    in the format [h]h:mm, that is, there are one or two hour digits followed
    by a colon and two minutes digits. The maximum number of hours and minutes
    are 99 and 59, respectively. Return -1 if the time is not in this format.

    >>> minutes('2:05')
    125
    >>> minutes('10:58')
    658
    >>> minutes('123:45')
    -1
    >>> minutes('2:60')
    -1
    >>> minutes('255')
    -1
    >>> minutes('-3:23')
    -1
    >>>
    """
    # Hint: the string method isdigit() returns true only if the string contains
    # only digits.
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def military_time(standard_time):
    """
    Return the time represented by the string standard_time in the 
    military time form 'hhmm', where s is in the form '[h]h:mm AM' or 
    '[h]h:mm PM', and the hours and minutes are in the ranges 1 to 12 and
    0 to 59, resp. Return None if standard_time is not in one of these forms.
    Note: the following tests are far from inclusive.

    >>> military_time('8:40 PM')
    '2040'
    >>> military_time('4:10 AM')
    '0410'
    >>> military_time('12:30 AM')
    '0030'
    >>> military_time('12:00 PM')
    '1200'
    >>> military_time('1230 PM')
    >>> # None returned
    """
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