LC101 Class 1.10                                                          Name: ____________________

Review Questions (Ch. 10-11)

1. What is the printout of the following code?

1. universe_a = [1, 2, 3, 4, 5]  
2. universe_b = universe_a  
3.   
4. def parallel_universe(b):  
5.     b[2] = 42  
6.   
7. parallel_universe(universe_a)  
8. print(universe_b[2])  
9. print(universe_a[2]) 

2. Identify the compiler error. What might the user have intended to print?

1. def failing_to_scramble(ingredients):  
2.     for x in range(len(ingredients)):  
3.         temp = x  
4.         ingredients[x] = ingredients[x+1]  
5.         ingredients[x+1] = temp  
6.   
7. ingredients = ('e', 'g', 'g', 's')  
8. print(failing_to_scramble(ingredients))  

3. What is the printout of the following function?

1. def shuffle_n_cheat(deck):  
2.     new_deck = []  
3.     for card in deck:  
4.         new_deck.append(card)  
5.     new_deck[len(deck) - 1] = new_deck[0]  
6.     return new_deck  
8. deck = ["A♠", "4♥", "8♣", "J♦"]  
9. print(shuffle_n_cheat(deck)) 

4. What is the printout of the following code?

1. def control(the_matrix):  
2.     for i in range(len(the_matrix)):  
3.         for j in range(len(the_matrix[i])):  
4.             if i == j:  
5.                 the_matrix[i][j] = 0  
6.                   
7. the_matrix = [[1,0,0],  
8.               [0,1,0],  
9.               [0,0,1]]  
10. control(the_matrix)  
11. print(the_matrix)