题目描述: 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. 解题思路:…

三星机试也考了类似的题目,只不过是要针对给出的数独修改其中三个错误数字,总过10个测试用例只过了3个与世界500强无缘了 36. 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…

求数独,只要求做出一个答案就可以. 刚开始对题意理解错误,以为答案是唯一的, 所以做了很久并没有做出来,发现答案不唯一之后,使用回溯.(还是借鉴了一下别人) public class Solution { public void solveSudoku(char[][] board) { HashSet[] hashset = new HashSet[27]; for (int i = 0; i < 27; i++) hashset[i] = new HashSet<Character>…

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. 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.…

题目链接: https://leetcode.com/problems/sudoku-solver/?tab=Description   Problem : 解决数独问题,给出一个二维数组,将这个数独进行求解.   思路: 嵌套循环,三层循环体,每一行,每一列,填入从1到9的数字.判断填入之后是否合理 判断数独是否合理的函数   参考代码:    package leetcode_50; /*** * * @author pengfei_zheng * 求解数独问题 */ public clas…

1 题目: 根据给出的数独,全部填出来 2 思路: 为了做出来,我自己人工做了一遍题目给的数独.思路是看要填的数字横.竖.子是否已经有1-9的数字,有就剔除一个,最后剩下一个的话,就填上.一遍一遍的循环,直到填完为止. 后来发现,这个思路只能解决部分数独.还有部分数独是需要回溯的,比如,这个位置只能填3或5,那么就需要先填上3,看看能否继续填下去,不能的话,再回过来填5. 想了半天,想不出来,把别人的backtracking看懂了,写出来了.. 3 代码: 自己的: Hashtable<Inte…

# -*- coding: utf8 -*-'''__author__ = 'dabay.wang@gmail.com' 37: Sudoku Solverhttps://oj.leetcode.com/problems/sudoku-solver/ Write a program to solve a Sudoku puzzle by filling the empty cells.Empty cells are indicated by the character '.'.You may a…

Sudoku Solver 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 re…

Sudoku Solver 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 re…