Define a function shuffle that takes a sequence with an even number of elements (cards) and creates a new list that interleaves the elements of the first half with the elements of the second half. Let's better understand what it means to shuffle a list in this way. Let's say there is some list [1, 2, 3, 4, 5, 6, 7, 8]. interleave the first half [1, 2, 3, 4] with the second half [5, 6, 7, 8] means that your final list should contain the first element from the first half, then the first element from the second half, then the second element of the first half, then the second element of the second half and so on. So the interleaved version of [1, 2, 3, 4, 5, 6, 7, 8] would be [1, 5, 2, 6, 3, 7, 4, 8]. def card (n):

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Define a function shuffle that takes a sequence with an even number of elements (cards) and creates a new list that
interleaves the elements of the first half with the elements of the second half.
Let's better understand what it means to shuffle a list in this way. Let's say there is some list [1, 2, 3, 4, 5, 6, 7, 8]. To
interleave the first half [1, 2, 3, 4] with the second half [5, 6, 7, 8] means that your final list should contain the first
element from the first half, then the first element from the second half, then the second element of the first half, then the
second element of the second half and so on.
So the interleaved version of [1, 2, 3, 4, 5, 6, 7, 8] would be [1, 5, 2, 6, 3, 7, 4, 8].
def card (n):
"""Return the playing card numeral as a string for a positive n <= 13."""
assert type(n) == int and n > 0 and n <= 13, "Bad card n"
specials = {1: 'A', 11: 'J', 12: 'Q', 13: 'K'}
return specials.get(n, str(n))
def shuffle (cards):
"""Return a shuffled list that interleaves the two halves of cards.
>>> shuffle (range(6))
[0, 3, 1, 4, 2, 5]
>>> suits = ['H', 'D', 'S', 'C']
>>> cards = [card (n) + suit for n in range (1,14) for suit in suits]
>>> cards [:12]
['AH', 'AD', 'AS', 'AC', '2H', '2D', '25', '2C', '3H', '3D', '3S', '3C']
>>> cards [26:30]
['7S', '7C', '8H', '8D']
>>> shuffle (cards) [:12]
['AH', '7S', 'AD', '7C', 'AS', '8H', 'AC', '8D', '2H', '8S', '2D', '8C']
>>> shuffle (shuffle (cards)) [:12]
['AH', '4D', '75', '10C', 'AD', '4S', '7C', 'JH', 'AS', '4C', '8H', 'JD']
>>> cards [:12] # Should not be changed
['AH', 'AD', 'AS', 'AC', '2H', '2D', '25', '2C', '3H', '3D', '3S', '30']
|| || ||
assert len(cards) % 2 == 0, 'len(cards) must be even'
"*** YOUR CODE HERE ***"
Transcribed Image Text:Define a function shuffle that takes a sequence with an even number of elements (cards) and creates a new list that interleaves the elements of the first half with the elements of the second half. Let's better understand what it means to shuffle a list in this way. Let's say there is some list [1, 2, 3, 4, 5, 6, 7, 8]. To interleave the first half [1, 2, 3, 4] with the second half [5, 6, 7, 8] means that your final list should contain the first element from the first half, then the first element from the second half, then the second element of the first half, then the second element of the second half and so on. So the interleaved version of [1, 2, 3, 4, 5, 6, 7, 8] would be [1, 5, 2, 6, 3, 7, 4, 8]. def card (n): """Return the playing card numeral as a string for a positive n <= 13.""" assert type(n) == int and n > 0 and n <= 13, "Bad card n" specials = {1: 'A', 11: 'J', 12: 'Q', 13: 'K'} return specials.get(n, str(n)) def shuffle (cards): """Return a shuffled list that interleaves the two halves of cards. >>> shuffle (range(6)) [0, 3, 1, 4, 2, 5] >>> suits = ['H', 'D', 'S', 'C'] >>> cards = [card (n) + suit for n in range (1,14) for suit in suits] >>> cards [:12] ['AH', 'AD', 'AS', 'AC', '2H', '2D', '25', '2C', '3H', '3D', '3S', '3C'] >>> cards [26:30] ['7S', '7C', '8H', '8D'] >>> shuffle (cards) [:12] ['AH', '7S', 'AD', '7C', 'AS', '8H', 'AC', '8D', '2H', '8S', '2D', '8C'] >>> shuffle (shuffle (cards)) [:12] ['AH', '4D', '75', '10C', 'AD', '4S', '7C', 'JH', 'AS', '4C', '8H', 'JD'] >>> cards [:12] # Should not be changed ['AH', 'AD', 'AS', 'AC', '2H', '2D', '25', '2C', '3H', '3D', '3S', '30'] || || || assert len(cards) % 2 == 0, 'len(cards) must be even' "*** YOUR CODE HERE ***"
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