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Sudoku Solver leetcode: sudoku_solver
Write a program to solve a Sudoku puzzle by filling the empty cells.
A sudoku solution must satisfy all of the following rules:
- Each of the digits
1-9
must occur exactly once in each row. - Each of the digits
1-9
must occur exactly once in each column. - Each of the the digits
1-9
must occur exactly once in each of the 93x3
sub-boxes of the grid. - Empty cells are indicated by the character
'.'
.

A sudoku puzzle…

…and its solution numbers marked in red.
Note:
- The given board contain only digits
1-9
and the character'.'
. - You may assume that the given Sudoku puzzle will have a single unique solution.
- The given board size is always
9x9
.
Functions§
- is_
valid - solve
- solve_
sudoku - Solutions