哈希表
func isValidSudoku(board [][]byte) bool {
row := make([]map[byte]uint8,9,9) // 定义记录器
col := make([]map[byte]uint8,9,9)
x3 := make([]map[byte]uint8,9,9)
//记录器初始化
for i := 0;i < 9;i++ {
row[i] = make(map[byte]uint8)
col[i] = make(map[byte]uint8)
x3[i] = make(map[byte]uint8)
}
for i := 0;i < 9;i++ {
for j := 0;j<9; j++ {
curl := board[i][j]
if curl != '.' {
row[i][curl]++
col[j][curl]++
x3[(i/3)*3+j/3][curl]++
if row[i][curl]>1 || col[j][curl]>1 || x3[(i/3)*3+j/3][curl]>1 {
return false
}
}
}
}
return true
}