-
Notifications
You must be signed in to change notification settings - Fork 0
/
sudokuSolver.py
70 lines (42 loc) · 1.24 KB
/
sudokuSolver.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
import numpy as np
grid = np.array([ [3, 0, 6, 5, 0, 8, 4, 0, 0],
[5, 2, 0, 0, 0, 0, 0, 0, 0],
[0, 8, 7, 0, 0, 0, 0, 3, 1],
[0, 0, 3, 0, 1, 0, 0, 8, 0],
[9, 0, 0, 8, 6, 3, 0, 0, 5],
[0, 5, 0, 0, 9, 0, 6, 0, 0],
[1, 3, 0, 0, 0, 0, 2, 5, 0],
[0, 0, 0, 0, 0, 0, 0, 7, 4],
[0, 0, 5, 2, 0, 6, 3, 0, 0] ])
def valid(col,row,num,grid):
for x in range(9):
if grid[row][x] == num:
return False
for x in range(9):
if grid[x][col] == num:
return False
startRow = row - row % 3
startCol = col - col % 3
for i in range(3):
for j in range(3):
if grid[i + startRow][j + startCol] == num:
return False
return True
def solve(x, y, grid):
if y == 8 and x == 9:
return True
if x == 9:
y += 1
x = 0
if grid[y][x]>0:
return solve(x+1,y,grid)
for i in range(1,10):
if valid(x,y,i,grid):
grid[y][x] = i
if solve(x+1,y,grid):
return True
grid[y][x] = 0
return False
print(grid)
solve(0,0,grid)
print (grid)