apple

Finished
1from itertools import permutations
2
3
14def drinks_water() -> str:
2 pass
5 """
6 Solve the Zebra Puzzle to find who drinks water.
7 Returns the nationality of the person who drinks water.
8 """
9 solution = solve_zebra_puzzle()
10 return solution['water_drinker']
311
412
513def owns_zebra() -> str:
6 pass
14 """
15 Solve the Zebra Puzzle to find who owns the zebra.
16 Returns the nationality of the person who owns the zebra.
17 """
18 solution = solve_zebra_puzzle()
19 return solution['zebra_owner']
20
21
22def solve_zebra_puzzle():
23 """
24 Solve the Zebra Puzzle using constraint satisfaction.
25 Returns a dictionary with the answers to the puzzle.
26 """
27 # Define the possible values for each category
28 colors = ['red', 'green', 'ivory', 'yellow', 'blue']
29 nationalities = ['Englishman', 'Spaniard', 'Ukrainian', 'Norwegian', 'Japanese']
30 pets = ['dog', 'snail', 'fox', 'horse', 'zebra']
31 drinks = ['coffee', 'tea', 'milk', 'orange juice', 'water']
32 hobbies = ['dancing', 'painting', 'reading', 'football', 'chess']
33
34 # Try all permutations of colors
35 for colors_perm in permutations(colors):
36 # Constraint 10: Norwegian lives in the first house
37 # Constraint 15: Norwegian lives next to the blue house
38 # So blue must be in position 2
39 if colors_perm[1] != 'blue':
40 continue
41
42 # Constraint 6: green house is immediately to the right of ivory house
43 try:
44 ivory_index = colors_perm.index('ivory')
45 if ivory_index == 4 or colors_perm[ivory_index + 1] != 'green':
46 continue
47 except ValueError:
48 continue
49
50 # Try all permutations of nationalities
51 for nat_perm in permutations(nationalities):
52 # Constraint 10: Norwegian lives in the first house
53 if nat_perm[0] != 'Norwegian':
54 continue
55
56 # Constraint 2: Englishman lives in the red house
57 try:
58 english_index = nat_perm.index('Englishman')
59 if colors_perm[english_index] != 'red':
60 continue
61 except ValueError:
62 continue
63
64 # Try all permutations of drinks
65 for drinks_perm in permutations(drinks):
66 # Constraint 9: person in the middle house drinks milk
67 if drinks_perm[2] != 'milk':
68 continue
69
70 # Constraint 4: person in the green house drinks coffee
71 try:
72 green_index = colors_perm.index('green')
73 if drinks_perm[green_index] != 'coffee':
74 continue
75 except ValueError:
76 continue
77
78 # Constraint 5: Ukrainian drinks tea
79 try:
80 ukrainian_index = nat_perm.index('Ukrainian')
81 if drinks_perm[ukrainian_index] != 'tea':
82 continue
83 except ValueError:
84 continue
85
86 # Try all permutations of pets
87 for pets_perm in permutations(pets):
88 # Constraint 3: Spaniard owns the dog
89 try:
90 spaniard_index = nat_perm.index('Spaniard')
91 if pets_perm[spaniard_index] != 'dog':
92 continue
93 except ValueError:
94 continue
95
96 # Try all permutations of hobbies
97 for hobbies_perm in permutations(hobbies):
98 # Constraint 8: person in the yellow house is a painter
99 try:
100 yellow_index = colors_perm.index('yellow')
101 if hobbies_perm[yellow_index] != 'painting':
102 continue
103 except ValueError:
104 continue
105
106 # Constraint 7: snail owner likes to go dancing
107 try:
108 snail_index = pets_perm.index('snail')
109 if hobbies_perm[snail_index] != 'dancing':
110 continue
111 except ValueError:
112 continue
113
114 # Constraint 13: person who plays football drinks orange juice
115 try:
116 football_index = hobbies_perm.index('football')
117 if drinks_perm[football_index] != 'orange juice':
118 continue
119 except ValueError:
120 continue
121
122 # Constraint 14: Japanese person plays chess
123 try:
124 japanese_index = nat_perm.index('Japanese')
125 if hobbies_perm[japanese_index] != 'chess':
126 continue
127 except ValueError:
128 continue
129
130 # Constraint 11: person who enjoys reading lives next to person with fox
131 try:
132 reading_index = hobbies_perm.index('reading')
133 fox_index = pets_perm.index('fox')
134 if abs(reading_index - fox_index) != 1:
135 continue
136 except ValueError:
137 continue
138
139 # Constraint 12: painter's house is next to house with horse
140 try:
141 painter_index = hobbies_perm.index('painting')
142 horse_index = pets_perm.index('horse')
143 if abs(painter_index - horse_index) != 1:
144 continue
145 except ValueError:
146 continue
147
148 # All constraints satisfied! Find the answers
149 water_index = drinks_perm.index('water')
150 zebra_index = pets_perm.index('zebra')
151
152 return {
153 'water_drinker': nat_perm[water_index],
154 'zebra_owner': nat_perm[zebra_index]
155 }
156
157 # No solution found (shouldn't happen with valid puzzle)
158 return {
159 'water_drinker': 'Unknown',
160 'zebra_owner': 'Unknown'
161 }
Test NameStatus
test_resident_who_drinks_water
Pass
test_resident_who_owns_zebra
Pass
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