Valid Sudoku Determine if a Sudoku is valid, according to: Sudoku Puzzles - The Rules. The Sudoku board could be partially filled, where empty cells are filled with the character '.'. A partially filled sudoku which is valid. Note: A valid Sudoku boa…

问题描述:填充数独表中空元素.空元素为'.' 算法分析:没填充一个数,都要看这个数所在的行,列,小矩阵是否合法.然后还要看整个数独表是否正确,而判断整个数独表只能通过递归,因为前一个结果的判断要依赖后一个结果.这应该属于动态规划问题.要递归回溯. public void solveSudoku(char[][] board) { solve(board); } public boolean solve(char[][] board) { for(int i = 0; i < 9; i ++) {…

Write a program to solve a Sudoku puzzle by filling the empty cells. Empty cells are indicated by the character '.'. You may assume that there will be only one unique solution. A sudoku puzzle... ...and its solution numbers marked in red. 这道求解数独的题是在之…

题目: 给定一个不完整的数独,要求填充好数独:最初给出的数独是有效的,且假设一定有答案: 举例: A sudoku puzzle... 解题思路: 该题与青蛙走迷宫问题很相似,都是用深度优先: 代码如下: public class Solution { public void solveSudoku(char[][] board) { if(board == null || board.length < 9 || board[0].length < 9) return; solve(board…

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.…

题目: Write a program to solve a Sudoku puzzle by filling the empty cells. Empty cells are indicated by the character '.'. You may assume that there will be only one unique solution. A sudoku puzzle... ...and its solution numbers marked in red.  (Hard)…

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.…

Write a program to solve a Sudoku puzzle by filling the empty cells. Empty cells are indicated by the character '.'. You may assume that there will be only one unique solution. A sudoku puzzle... ...and its solution numbers marked in red. Hide Tags B…

写一个程序通过填充空格来解决数独.空格用 '.' 表示. 详见:https://leetcode.com/problems/sudoku-solver/description/ class Solution { public: bool solveSudoku(vector<vector<char> > &board) { for (int i = 0; i < 9; ++i) for (int j = 0; j < 9; ++j) { if ('.' == b…

Write a program to solve a Sudoku puzzle by filling the empty cells. Empty cells are indicated by the character '.'. You may assume that there will be only one unique solution. A sudoku puzzle... ...and its solution numbers marked in red. dfs,一直寻找,不行…