sudoku solver algorithm

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[Leetcode] Algorithm topic-Sudoku Solver

. ***********************************************************/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; } } return true;}BOOLSudokusolution (Char*board

[Leetcode 36&37] Valid Sudoku & Sudoku Solver (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] Sudoku Solver 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 Sudoku Solver

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] [Python]37:sudoku Solver

#-*-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 Notoginseng Sudoku Solver (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. SudoKu (board,i,j+1

[Leetcode] Sudoku Solver @ 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: Sudoku Solver, 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] 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 red. The sudoku solver was finally reached. With the basis of valid

Leetcode DFS Sudoku Solver

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. Sudoku Solver

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] - '

Leetcode Sudoku Solver

Topic Connectionhttps://leetcode.com/problems/sudoku-solver/Sudoku solverdescriptionWrite 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 .....

Leetcode Sudoku Solver

{ - return true; - } theBoard[i][j]= '. '; - } - return false; - } + } - } + return true; A } at Private BooleanIsvalidsudoku (Char[] board,intRowintColum) { - for(intj=0;j) - if(J! = Colum Board[row][j] = =Board[row][colum]) - return false; - -

[Leetcode] [Java] Sudoku Solver

Title: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.Test Instructions:Write a program to solve Sudoku problems by filling in whitespace.These spaces are characters‘.‘填充。You can as

[Leetcode] Sudoku Solver

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" Sudoku Solver

} - - - for(intj=0;j9; j + +) + { - if(j==j0)Continue; + if(board[i0][j]==target) A { at return false; - } - } - - for(inti=i0/3*3; i3*3+3; i++) - { in - for(intj=j0/3*3; j3*3+3; j + +) to { + if(i==i0j==j0)Continue; - if(board[i][j]==target) the { * return false; $

[Leetcode] (python): 037-sudoku Solver

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

Panax Sudoku Solver

/** 37. Sudoku Solver * 2015.12.13 by Mingyang * 1. Length standard: None * 2. Optional range: All the wood is worth the point, pick a number from 1 to 9 * 3. Take a step forward: if put in is validate, then Put * 4. Take a step back: if you put it in and the back is false, change the point back to * 5. Special case: No * 6. On repetition: none * The IsValid of this topic is difficult * row = I/3 * 3; Row *

[Leetcode] (python): 037-sudoku Solver

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

Panax Sudoku Solver (Graph; WFS)

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.classSolution { Public: voidSolvesudoku (vectorChar>> Board) {Backtracking (board,0); } BOOLBacktracking (vectorChar>> board,intLine ) { //Find first empty cell

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