# sudoku solver code

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### [Leetcode 36&amp;37] Valid Sudoku &amp; SudokuSolver (Sudoku problem)

Title Link: Valid-sudokuImport java.util.arrays;/** * Determine if a Sudoku is valid, according To:sudoku puzzles-the rules.the Sudoku Board Co Uld be partially filled, where empty cells is filled with the character '. A partially filled sudoku which is valid. Note:a Valid Sudoku board (partially filled) is not necessa

### [Leetcode] SudokuSolver Solving Sudoku

numbers are legal, which can make the program more efficient, as shown in the code:classSolution { Public: voidSolvesudoku (vectorChar> > Board) { if(Board.empty () | | board.size ()! =9|| board[0].size ()! =9)return; Solvesudokudfs (board,0,0); } BOOLSolvesudokudfs (vectorChar> > board,intIintj) {if(i = =9)return true; if(J >=9)returnSolvesudokudfs (board, i +1,0); if(Board[i][j] = ='.') { for(intK =1; K 9; ++k) {Board[i][j]= (Char) (k +'0'); if(isValid (board, I, J))

### The implementation method of C + + for programming beauty SudokuSolver

Programming the beauty of the first chapter of the 15th section, talking about the construction of Sudoku, a start to get this problem really no idea, but read the book in the introduction, found that the original solution of the idea and the N queen problem is consistent, but do not know why, anyway, at first did not think of this backtracking method, know that is solved by backtracking, The problem becomes much easier.Here we do not intend to implem

### Leetcode Notoginseng SudokuSolver (C,c++,java,python)

Solvesudoku (vectorPython source code (636MS):Class Solution: # @param {character[][]} board # @return {void} do not return anything, modify board In-place Instea D. def solvesudoku (self, Board): self. SudoKu (board,0,0) def SudoKu (self,board,i,j): If I==8 and J==9:return True if j==9:i+=1;j=0 if boa Rd[i][j]!= '. ': if self.

### [Leetcode] Algorithm topic-SudokuSolver

. ***********************************************************/My code is as follows:BOOLIsValid (Char*board[9],intRowintColumnCharNumber ) { for(inti =0; I 9; i++){ if(Board[row][i] = =Number ) { return false; } if(Board[i][column] = =Number ) { return false; } } for(inti =0; I 9; i++){ intA = (Row/3) *3+ I/3; intb = (column/3) *3+ i%3; if(Board[a][b] = =Number ) { return false; } }

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### [Leetcode] SudokuSolver

Sudoku SolverWrite a program to solve a Sudoku puzzle by filling the empty cells.Empty cells is indicated by the character ‘.‘ .Assume that there would be is only one unique solution.A Sudoku Puzzle ...... and its solution numbers marked in red.Problem Solving Ideas:I didn't play Sudoku before, so I went to the interne

### [Leetcode] (python): 037-sudokuSolver

Source of the topic https://leetcode.com/problems/sudoku-solver/Write a program to solve a Sudoku puzzle by filling the empty cells.Empty cells is indicated by the character ‘.‘ .Assume that there would be is only one unique solution. Test instructions Analysis Input:a Unsolved SudokuOutput:a solved SudokuConditions: Meet the

### [Leetcode] (python): 037-sudokuSolver

Source of the topic:https://leetcode.com/problems/sudoku-solver/ Test Instructions Analysis:This topic is the evolutionary version of the previous question. Fill out a Sudoku. Topic Ideas:This problem is solved directly with DFS violence. Please fill in the "*" with (1-9) directly. The complexity of time is relatively high. Note that the title require

### [Leetcode] [Python]37:sudokuSolver

#-*-Coding:utf8-*-‘‘‘__author__ = ' [email protected] '37:sudoku Solverhttps://oj.leetcode.com/problems/sudoku-solver/Write a program to solve a Sudoku puzzle by filling the empty cells.Empty cells is indicated by the character '.Assume that there would be is only one unique solution.===comments by dabay===Progressive

### Leetcode problem Notoginseng--SudokuSolver

Solving SudokuWrite a program to solve a Sudoku puzzle by filling the empty cells.Empty cells is indicated by the character ‘.‘ .Assume that there would be is only one unique solution.A Sudoku Puzzle ...Ideas:Search Plus pruning.First set up 3 auxiliary two-dimensional arrays: rows, columns, grids to maintain the current Sudoku State, Rows[i][k] (1It then reads t

### Java [Leetcode 37]sudokuSolver

Title Description:Write a program to solve a Sudoku puzzle by filling the empty cells.Empty cells is indicated by the character ‘.‘ .Assume that there would be is only one unique solution.A Sudoku Puzzle ...... and its solution numbers marked in red.Problem Solving Ideas:The subject uses backtracking and HashSet methods. For each blank position, the temptation is to use a number between ' 1 '-' 9 ', if the

### [Leetcode] SudokuSolver @ Python

Original title address: https://oj.leetcode.com/problems/sudoku-solver/Test instructionsWrite a program to solve a Sudoku puzzle by filling the empty cells.Empty cells is indicated by the character ‘.‘ .Assume that there would be is only one unique solution.A Sudoku Puzzle ...... and its solution numbers marked in red.

### Leetcode 36 SudokuSolver

Label: Java leetcode 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. Idea 1: use violent DFS public class Solution {private boolean isValidSudoku(char[][] board, int row, int column) {int i, j;int[] va

### Leetcode 36th -- SudokuSolver

Label: style blog HTTP color Io AR for SP Div Question: 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. This question is more difficult than determining whether the question value is valid. Ther

### Leetcode Note: SudokuSolver

Leetcode Note: Sudoku Solver I. Description 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. The following photo is a sudoku puzzle... ... And its solution numbers marked in red: VcD4NCjxw

### Leetcode Notoginseng SudokuSolver java

Seek Sudoku, only ask to make an answer.Just beginning to understand test instructions wrong, think the answer is unique, so did not do it for a long time, found that the answer is not unique after using backtracking. (or a reference to others)public class Solution {public void Solvesudoku (char[][] board) {hashset[] HashSet = new Hashset[27];for (int i = 0; I Backtracking is still relatively simple, that is, in the implementation of the time, if you

### LeetCode: SudokuSolver, leetcodesudoku

LeetCode: Sudoku Solver, leetcodesudoku Sudoku Solver Total Accepted: 13937 Total Submissions: 66832My Submissions 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

### [Leetcode] SudokuSolver

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. The sudoku solver was finally reached. With the basis of valid

### Leetcode DFS SudokuSolver

Sudoku Solver Total accepted:11799 Total submissions:56732 My submissions 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

### Leetcode---37. SudokuSolver

complexity: O (n2)1 class Solution2 {3 int used1[9][9], Used2[9][9], used3[9][9];4 5 Public:6 void Solvesudoku(VectorVectorChar> > Board)7 {8 VectorVectorint>> Place;9 for(int I = 0; I Board.size(); ++ I)Ten for(int J = 0; J Board[I].size(); ++ J) One { A if(Board[I][J] == '. ') - Place.push_back({I, J}); - Else the { - int Num = Board[I][J] - '

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