adrien/sudoku-solver
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Rename field to grid because it is more clear and add time spent to find the solution

Browse Source
This commit is contained in:
adrien 2022-03-02 00:15:57 +01:00
parent 1bc9ef6af2
commit fa7857a98e
Signed by: adrien
GPG Key ID: 4F17BEA67707AC21
1 changed files with 16 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
main.go
View File

@ -1,8 +1,11 @@
package main
import "fmt"
import (
"fmt"
"time"
)
var field = [9][9]int{
var grid = [9][9]int{
{5, 3, 0, 0, 7, 0, 0, 0, 0},
{6, 0, 0, 1, 9, 5, 0, 0, 0},
{0, 9, 8, 0, 0, 0, 0, 6, 0},
@ -15,7 +18,7 @@ var field = [9][9]int{
}
func draw() {
for _, row := range field {
for _, row := range grid {
fmt.Println(row)
}
fmt.Println()
@ -29,7 +32,7 @@ func canPut(x int, y int, value int) bool {
func alreadyInVertical(x int, y int, value int) bool {
for i := range [9]int{} {
if field[i][x] == value {
if grid[i][x] == value {
return true
}
}
@ -38,7 +41,7 @@ func alreadyInVertical(x int, y int, value int) bool {
func alreadyInHorizontal(x int, y int, value int) bool {
for i := range [9]int{} {
if field[y][i] == value {
if grid[y][i] == value {
return true
}
}
@ -49,7 +52,7 @@ func alreadyInSquare(x int, y int, value int) bool {
sx, sy := int(x/3)*3, int(y/3)*3
for dy := range [3]int{} {
for dx := range [3]int{} {
if field[sy+dy][sx+dx] == value {
if grid[sy+dy][sx+dx] == value {
return true
}
}
@ -69,17 +72,17 @@ func solve(x int, y int) bool {
if y == 9 {
return true
}
if field[y][x] != 0 {
if grid[y][x] != 0 {
return solve(next(x, y))
} else {
for i := range [9]int{} {
var v = i + 1
if canPut(x, y, v) {
field[y][x] = v
grid[y][x] = v
if solve(next(x, y)) {
return true
}
field[y][x] = 0
grid[y][x] = 0
}
}
return false
@ -89,10 +92,12 @@ func solve(x int, y int) bool {
func main() {
fmt.Println("Grid to be completed:")
draw()
startSolving := time.Now()
if solve(0, 0) {
fmt.Println("I found a solution, see below")
stopSolving := time.Since(startSolving)
fmt.Printf("I found a solution (in %v):\n", stopSolving)
draw()
} else {
fmt.Println("I did not find a solution")
fmt.Println("I did not find a solution...")
}
}