-
Notifications
You must be signed in to change notification settings - Fork 0
/
risolvi_sudoku.py
93 lines (77 loc) · 2.34 KB
/
risolvi_sudoku.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
tabella1 = [
[7, 8, 0, 4, 0, 0, 1, 2, 0],
[6, 0, 0, 0, 7, 5, 0, 0, 9],
[0, 0, 0, 6, 0, 1, 0, 7, 8],
[0, 0, 7, 0, 4, 0, 2, 6, 0],
[0, 0, 1, 0, 5, 0, 9, 3, 0],
[9, 0, 4, 0, 6, 0, 0, 0, 5],
[0, 7, 0, 3, 0, 0, 0, 1, 2],
[1, 2, 0, 0, 0, 7, 4, 0, 0],
[0, 4, 9, 2, 0, 6, 0, 0, 7]
]
tabella2 = [
[0, 0, 9, 0, 0, 0, 7, 0, 0],
[0, 4, 0, 5, 0, 9, 0, 1, 0],
[3, 0, 0, 0, 1, 0, 0, 0, 2],
[0, 1, 0, 0, 6, 0, 0, 7, 0],
[0, 0, 2, 7, 0, 1, 8, 0, 0],
[0, 5, 0, 0, 4, 0, 0, 3, 0],
[7, 0, 0, 0, 3, 0, 0, 0, 4],
[0, 8, 0, 2, 0, 4, 0, 6, 0],
[0, 0, 6, 0, 0, 0, 5, 0, 0]
]
tabella = tabella2
def stampa_tabella(tab):
print('==' * 12)
for i in range(len(tab)):
if i % 3 == 0 and i != 0:
print('- ' * 12)
for j in range(len(tab[0])):
if j % 3 == 0 and j != 0:
print(' | ', end='')
if j == 8:
print(tab[i][j])
else:
print(f'{tab[i][j]} ', end='')
print('==' * 12)
def trova_vuoti(tab):
for i in range(len(tab)):
for j in range(len(tab[0])):
if tab[i][j] == 0:
return (i, j) # riga, colonna
return None
def valido(tab, num, pos):
# controlla riga
for i in range(len(tab[0])):
if tab[pos[0]][i] == num and pos[1] != i:
return False
# controlla colonna
for i in range(len(tab)):
if tab[i][pos[1]] == num and pos[0] != i:
return False
# controlla quadrato
box_x = pos[1] // 3
box_y = pos[0] // 3
for i in range(box_y * 3, box_y * 3 + 3):
for j in range(box_x * 3, box_x * 3 + 3):
if tab[i][j] == num and (i, j) != pos:
return False
return True
def risolvi(tab):
# se la tabella è piena è risolta
vuoti = trova_vuoti(tab)
if not vuoti:
return True
else:
riga, colonna = vuoti
for num in range(1, 10):
if valido(tab, num, (riga, colonna)):
tab[riga][colonna] = num
if risolvi(tab):
return True
tab[riga][colonna] = 0
return False
if __name__ == "__main__":
stampa_tabella(tabella)
risolvi(tabella)
stampa_tabella(tabella)