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Sudoku
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Create Sudoku.cpp

Windows-GUI v1.0
dnomd343 5 years ago
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  1. 315
      Sudoku.cpp

315
Sudoku.cpp
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#include<iostream>
#include<vector>
#include<fstream>
using namespace std;
ifstream File_Input;
ofstream File_Output;
struct Sudoku_Class{ //一个宫格的内容
unsigned char Data; //数字1~9，0表示未完成
bool May[9]; //假设数
};
struct Try_Point_Class{ //假设链上的节点
unsigned char Block_Num; //被假设的宫格编号
unsigned char Point_Num; //当前正在被假设的Item编号
vector <unsigned char> Item; //节点中的所有假设数
};
struct Sudoku_Class Base[81]; //全部81个宫格
struct Sudoku_Class Backup[81]; //进行假设的时候暂存使用
unsigned char Addr_Kind[3][9][9]; //行列宫对应的位置表
unsigned char Addr_Block[81][3]; //宫格所在行列宫的编号
vector <struct Try_Point_Class> Try; //假设链
struct Try_Point_Class Empty_Point; //空的假设节点
unsigned char Mode;
void Init();
void Analyse();
void Engine();
bool Check_Compete();
bool Check_Error();
void Create_New_Point();
void Solve_Output();
bool Try_Next();
void Data_Input();
unsigned int Calculate();
unsigned char Next_Empty_Block(unsigned char Start);
void Init_Point(unsigned char Block_Num,unsigned char Point_Num);
int main(){
unsigned int Solve_Num,Dat;
Init();
cout<<"Welcome to Sudoku-Calculator!"<<endl;
Restart:;
Data_Input();
cout<<endl<<"The Input Data:"<<endl;
Solve_Output();
cout<<"0.Go back and edit the data"<<endl;
cout<<"1.Show all solutions one by one"<<endl;
cout<<"2.Find the number of solutions in all cases"<<endl;
cout<<"3.Find all solutions and output them to file"<<endl;
cout<<endl<<"Select a mode and continue : ";
cin>>Dat;
if((Dat>=1)&&(Dat<=3)){Mode=Dat;}else{goto Restart;}
cout<<"The mode is "<<int(Mode)<<" ,Press ENTER to Start Calculate...";
cin.get();cin.get();
cout<<"Please Wait..."<<endl;
Solve_Num=Calculate();
if(Solve_Num==0){
cout<<"Error or No solve!!!"<<endl;
}
else{
cout<<"Found "<<Solve_Num<<" Solution"<<endl;
}
cout<<"Press ENTER to Exit...";
cin.get();
return 0;
}
void Data_Input(){ //接受命令行下输入数独内容
unsigned int Num,i;
char Dat;
char Data[82];
cout<<"Please Input the Data:"<<endl;
Num=0;
Next:;
cout<<endl<<endl<<endl<<endl<<endl<<endl;
cout<<"You can Input the Command and then Press the ENTER"<<endl;
cout<<"'+' : Next Block '-' : Last Block"<<endl;
cout<<"'*' : Next Line '/' : Last Line"<<endl;
cout<<"'=' : Compete '0' : Empty Block"<<endl;
cout<<"'1' to '9' : The Number"<<endl<<endl;
for(i=0;i<=80;i++){
Data[i]=Base[i].Data+48;
}
Data[81]=0;
for(i=0;i<=80;i++){
if(i==Num){
cout<<"_"<<" ";
}
else{
if(Data[i]=='0'){cout<<"?"<<" ";}else{cout<<Data[i]<<" ";}
}
if(i%3==2){cout<<" ";}
if(i%9==8){cout<<endl;}
if(i%27==26){cout<<endl;}
}
cin>>Dat;
if(Dat==43){ // ‘+’
if(Num<=79){Num++;}
goto Next;
}
else if(Dat==45){ // '-'
if(Num>=1){Num--;}
goto Next;
}
else if(Dat==42){ // '*'
if(Num<=71){Num=Num+9;}
goto Next;
}
else if(Dat==47){ // '/'
if(Num>=9){Num=Num-9;}
goto Next;
}
else if(Dat==61){} // '='
else if((Dat>=48)&&(Dat<=57)){
Base[Num].Data=int(Dat-48);
if(Num<=79){Num++;}
goto Next;
}
else{goto Next;}
}
void Solve_Output(){
unsigned char i;
char Data[82];
if(Mode==2){return;}
for(i=0;i<=80;i++){Data[i]=Base[i].Data+48;}
Data[81]=0;
if(Mode==0){
cout<<endl;
for(i=0;i<=80;i++){
if(Data[i]==48){cout<<"-"<<" ";}else{cout<<Data[i]<<" ";}
if(i%3==2){cout<<" ";}
if(i%9==8){cout<<endl;}
if(i%27==26){cout<<endl;}
}
}
else if(Mode==1){
cout<<endl;
for(i=0;i<=80;i++){
cout<<Data[i]<<" ";
if(i%3==2){cout<<" ";}
if(i%9==8){cout<<endl;}
if(i%27==26){cout<<endl;}
}
cout<<"Press ENTER to Show Next Solution...";
cin.get();
cout<<endl;
}
else if(Mode==3){
File_Output<<Data<<endl;
}
}
unsigned int Calculate(){ //主计算函数
unsigned char i;
int Solve_Num=0;
if(Mode==3){File_Output.open("Data_Output.txt");}
Engine(); //初步排除运算
if(Check_Error()==true){File_Output.close();return 0;} //输入的数独有误
if(Check_Compete()==true){Solve_Output();File_Output.close();return 1;} //输入的数独已完成
for(i=0;i<=80;i++){Backup[i]=Base[i];} //备份数据 假设时暂存
Create_New_Point(); //创建假设链根节点
while(1){
for(i=0;i<=(Try.size()-1);i++){ //装载假设链
Base[Try[i].Block_Num].Data=Try[i].Item[Try[i].Point_Num];
}
Engine(); //进行排除运算
if(Check_Error()==true){ //当前假设错误
if(Try_Next()==false){break;} //没有下一个假设，则该数独无解，退出
}
else{ //当前假设可能正确
if(Check_Compete()==false){ //若仍未完成，则创建新的假设节点
Create_New_Point();
}
else{ //已完成
Solve_Output();
Solve_Num++; //答案数目+1
if(Try_Next()==false){break;} //没有下一个假设，求解完成，退出
}
}
}
File_Output.close();
return Solve_Num;
}
bool Try_Next(){ //当前假设错误，装载下一个假设
unsigned char i;
while((Try[Try.size()-1].Point_Num>=(Try[Try.size()-1].Item.size()-1))){
if(Try.size()==1){return false;}
Try.resize(Try.size()-1);
}
Try[Try.size()-1].Point_Num++; //假设链末节点指向下一个Item
for(i=0;i<=80;i++){ //将备份数据重新装载
Base[i]=Backup[i];
}
return true; //成功
}
void Create_New_Point(){ //创建新的假设链节点
Try.push_back(Empty_Point);
if(Try.size()==1){ //若为根节点
Init_Point(Next_Empty_Block(0),0); //从第一格开始搜索未完成宫格
}
else{ //若不是根节点
Init_Point(Next_Empty_Block(Try[Try.size()-2].Block_Num+1),Try.size()-1); //从上一节点指向的宫格开始搜索未完成宫格
}
}
void Init_Point(unsigned char Block_Num,unsigned char Point_Num){ //初始化假设链节点 Block_Num->被假设宫格的编号 Point_Num->节点的编号
unsigned char i;
Try[Point_Num].Block_Num=Block_Num;
for(i=0;i<=8;i++){
if(Base[Try[Point_Num].Block_Num].May[i]==true){ //遍历目标宫格的所有假设数并加入到该节点的Item中
Try[Point_Num].Item.push_back(i+1);
}
}
Try[Point_Num].Point_Num=0; //指向Item中的第一个假设数
}
unsigned char Next_Empty_Block(unsigned char Start){ //找到下一个未确定答案的宫格并返回其编号
unsigned char i;
for(i=Start;i<=80;i++){
if(Base[i].Data==0){return i;}
}
return 0; //没有未确定宫格
}
bool Check_Error(){ //检查数独是否存在错误
unsigned char kind,num,add,item;
for(kind=0;kind<=2;kind++){ //分别扫描行列宫
for(num=0;num<=8;num++){
for(item=1;item<=9;item++){
add=0;
for(unsigned char k=0;k<=8;k++){
if(Base[Addr_Kind[kind][num][k]].Data==item){add++;}
}
if(add>=2){return true;} //若一组行列宫中存在两个相同的数 -> 错误退出
}
}
}
for(num=0;num<=80;num++){ //扫描全部宫格
if(Base[num].Data==0){ //若未完成
add=0;
for(unsigned char k=0;k<=8;k++){ //遍历其所有假设数
if(Base[num].May[k]==true){add++;}
}
if(add==0){return true;} //没有可能的数 -> 错误退出
}
}
return false; //暂时未发现错误
}
bool Check_Compete(){ //判断数独是否完成
unsigned char i;
for(i=0;i<=80;i++){
if(Base[i].Data==0){return false;}
}
return true;
}
void Engine(){ //使用排除法
unsigned char kind,num,item,add,dat;
bool Could_Solve;
Again:;
Analyse(); //每次排除前应先消去假设数
Could_Solve=false;
for(kind=0;kind<=2;kind++){ //分别扫描行列宫
for(num=0;num<=8;num++){
for(item=0;item<=8;item++){
add=0;
for(unsigned char k=0;k<=8;k++){
if((Base[Addr_Kind[kind][num][k]].Data==0)&&(Base[Addr_Kind[kind][num][k]].May[item]==true)){add++;dat=k;} //记录一组行列宫中的可能数
}
if(add==1){Base[Addr_Kind[kind][num][dat]].Data=item+1;Could_Solve=true;} //若仅有唯一可能数，则该宫格答案确定
}
}
if(Could_Solve==true){goto Again;} //一直循环直到没有排除对象
}
}
void Analyse(){ //消去假设数
unsigned char num,kind,item;
for(num=0;num<=80;num++){ //遍历所有宫格
if(Base[num].Data!=0){ //若该宫格已完成
for(kind=0;kind<=2;kind++){ //分别对行列宫操作
for(item=0;item<=8;item++){
Base[Addr_Kind[kind][Addr_Block[num][kind]][item]].May[Base[num].Data-1]=false; //消去同行同列同宫的假设数
}
}
}
}
}
void Init(){ //初始化容器
unsigned char i,j,x,y;
for(i=0;i<=8;i++){ //初始化行与列的位置表
for(j=0;j<=8;j++){
Addr_Kind[0][i][j]=i*9+j;
Addr_Kind[1][i][j]=j*9+i;
}
}
for(x=0;x<=2;x++){ //初始化九宫格的位置表
for(y=0;y<=2;y++){
for(i=0;i<=2;i++){
for(j=0;j<=2;j++){
Addr_Kind[2][y*3+x][j*3+i]=(y*3+j)*9+(x*3+i);
}
}
}
}
for(i=0;i<=2;i++){ //初始化宫格所在行列宫的编号
for(x=0;x<=8;x++){
for(y=0;y<=8;y++){
Addr_Block[Addr_Kind[i][x][y]][i]=x;
}
}
}
for(i=0;i<=80;i++){ //清空所有假设数
for(j=0;j<=8;j++){
Base[i].May[j]=true;
}
}
for(i=0;i<=80;i++){ //清空所有数字
Base[i].Data=0;
}
}
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