文章目录：
求用C语言编一个解九宫格数独的程序
前两天刚写完,还没优化,已运行通过了.
晕，一维的好麻烦，这个也是碰巧前两天刚写好的，你看着自己修改下
#include stdio.h
typedef struct
{
int line;
int row;
int num;
}Node;
int main()
{
/*
int a[9][9]={
{4,0,3,6,0,0,0,0,0},
{0,0,0,0,0,1,0,2,4},
{0,1,0,0,4,0,5,0,0},
{0,0,0,9,0,4,0,6,0},
{3,0,2,0,0,0,4,0,9},
{0,7,4,1,0,3,0,0,0},
{0,0,1,0,9,0,0,4,0},
{2,4,0,3,0,0,0,0,0},
{0,0,0,4,0,8,2,0,7}};
*/
int a[9][9]={
{0,0,0,8,0,0,0,6,0},
{8,7,0,0,0,0,0,0,0},
{2,9,0,0,4,1,0,0,5},
{0,0,5,7,0,0,0,0,9},
{0,2,0,0,0,0,0,1,0},
{9,0,0,0,0,4,3,0,0},
{7,0,0,6,1,0,0,9,8},
{0,0,0,0,0,0,0,5,2},
{0,6,0,0,0,9,0,0,0}};
/*
int a[9][9]={
{0,2,0,0,6,0,0,0,0},
{0,9,0,4,0,5,1,3,0},
{0,0,8,7,0,0,0,0,5},
{6,0,0,3,0,0,4,0,0},
{0,0,0,9,0,6,0,0,0},
{0,0,7,0,0,1,0,0,3},
{4,0,0,0,0,7,3,0,0},
{0,8,5,2,0,4,0,7,0},
{0,0,0,0,9,0,0,1,0}};
*/
/*
int a[9][9]={
{0,0,3,0,2,0,0,0,6},
{0,0,2,0,9,0,0,0,4},
{7,0,0,8,0,0,2,0,3},
{0,8,0,0,7,0,5,0,0},
{0,7,0,1,0,6,0,3,0},
{0,0,0,2,0,0,0,9,0},
{4,0,6,0,0,8,0,0,5},
{6,0,0,0,4,0,3,0,0},
{9,0,0,0,1,0,7,0,0}};
*/
int i,j,n,en,flag,y,k=0,x,qu,p,q;
Node b[70];
for(i=0;i9;i++)
{
for(j=0;j9;j++)
{
if(!a[i][j])
{
b[k].line=i;
b[k].row=j;
b[k].num=0;
k+=1;
}
}
}
en=k;
/*从b[0]开始试，若b[k].num9,则k-1,否则k+1*/
for(k=0;ken;)
{
++b[k].num;
i=b[k].line;
j=b[k].row;
a[i][j]=b[k].num;
n=0;
while(n9b[k].num=9)
{
if(n==i)
{
for(y=0;y9;y++)
{
if(y==j)
continue;
if(a[n][y]==a[i][j])
flag=1;
}
}
else if(n==j)
{
for(y=0;y9;y++)
{
if(y==i)
continue;
if(a[y][n]==a[i][j])
flag=1;
}
}
/*判断同一块中有没有相同值*/
qu=3*(i/3)+j/3;
switch(qu)
{
case 0:x=0;
y=0;
break;
case 1:x=0;
y=3;
break;
case 2:x=0;
y=6;
break;
case 3:x=3;
y=0;
break;
case 4:x=3;
y=3;
break;
case 5:x=3;
y=6;
break;
case 6:x=6;
y=0;
break;
case 7:x=6;
y=3;
break;
default :x=6;
y=6;
break;
}
p=x;
q=y;
for(;xp+3;x++)
{
for(;yq+3;y++)
{
if(x==iy==j)
continue;
if(a[x][y]==a[i][j])
{
flag=1;
break;
}
}
if(flag==1)
break;
}
if(flag==1)
{
a[i][j]=++b[k].num;
flag=0;
n=0;
continue;
}
n++;
}
if(b[k].num9)
{
a[i][j]=b[k].num=0;
k--;
if(k0)
{
printf("error!\r\n");
return -1;
}
}
else
k++;
}
for(i=0;i9;i++)
{
for(j=0;j9;j++)
{
printf("%d",a[i][j]);
}
printf("\r\n");
}
return 1;
}
基于SAT的数独游戏求解程序，求C语言代码
用0代表要填的数
#include stdio.h
#include stdlib.h
#define SIZE 9
#define get_low_bit(x) ((~x(x-1))+1)
struct{
int left;
char num;
char try;
}board[SIZE][SIZE];
int bit2num(int bit)
{
switch(bit){
case 16:
case 256:
return 9;
基础解法
排除法（摒除法）
摒除法：用数字去找单元内唯一可填空格，称为摒除法，数字可填唯一空格称为排除法 (Hidden Single)。
根据不同的作用范围，摒余解可分为下述三种：
数字可填唯一空格在「宫」单元称为宫排除（Hidden Single in Box），也称宫摒除法。
数字可填唯一空格在「行」单元称为行排除法（Hidden Single in Row），也称行摒除法。
数独 算法 C语言 代码
一、步骤：
1.对每一个空格，根据规则推断它可能填入的数字，并存储它的所有可能值；
2.根据可能值的个数，确定填写的顺序。比如说，有些空格只有一种可能，那必然是正确的结果，首先填入。
3.将所有只有一种可能的空格填写完毕以后，回到步骤1，重新确定剩下空格的可能值；
4.当没有只有一种可能的空格时（即每个空格都有两种以上可能），按照可能值个数从小到大的顺序，使用深度（广度）优先搜索，完成剩下空格。
二、例程：
#include windows.h
#include stdio.h
#include time.h
char sd[81];
bool isok = false;
//显示数独
void show()
{
if (isok) puts("求解完成");
else puts("初始化完成");
for (int i = 0; i 81; i++)
{
putchar(sd[i] + '0');
if ((i + 1) % 9 == 0) putchar('\n');
}
putchar('\n');
}
//读取数独
bool Init()
{
FILE *fp = fopen("in.txt", "rb");
if (fp == NULL) return false;
fread(sd, 81, 1, fp);
fclose(fp);
for (int i = 0; i 81; i++)
{
if (sd[i] = '1' sd[i] = '9') sd[i] -= '0';
else sd[i] = 0;
}
show();
return true;
}
//递归解决数独
void force(int k)
{
if (isok) return;
if (!sd[k])
{
for (int m = 1; m = 9; m++)
{
bool mm = true;
for (int n = 0; n 9; n++)
{
if ((m == sd[k/27*27+(k%9/3)*3+n+n/3*6]) || (m == sd[9*n+k%9]) || (m == sd[k/9*9+n]))
{
mm = false;
break;
}
}
if (mm)
{
sd[k] = m;
if (k == 80)
{
isok = true;
show();
return;
}
force(k + 1);
}
}
sd[k] = 0;
}
else
{
if (k == 80)
{
isok = true;
show();
return;
}
force(k + 1);
}
}
int main()
{
system("CLS");
if (Init())
{
double start = clock();
force(0);
printf("耗时%.0fms", clock() - start);
}
else puts("初始化错误");
getchar();
}
求用C语言编写一个解数独的程序，急
用0代表要填的数
#include stdio.h
#include stdlib.h
#define SIZE 9
#define get_low_bit(x) ((~x(x-1))+1)
struct{
int left;
char num;
char try;
}board[SIZE][SIZE];
int bit2num(int bit)
{
switch(bit){
case 1:case 2:
return bit;
case 4:
return 3;
case 8:
return 4;
case 16:
return 5;
case 32:
return 6;
case 64:
return 7;
case 128:
return 8;
case 256:
return 9;
}
}
void printf_res()
{
int i, j, k;
for(i=0; iSIZE; i++)
{
if(i%3==0)
{
for(j=0; jSIZE*2+4; j++)
putchar('-');
putchar('\n');
}
for(j=0; jSIZE; j++)
{
if(j%3==0)
putchar('|');
if(board[i][j].num 0)
printf("\033[0;31m%2d\033[0m", board[i][j].num);
else
printf("%2d", board[i][j].try);
}
printf("|\n");
}
for(i=0; iSIZE*2+4; i++)
putchar('-');
putchar('\n');
}
void sub(int i, int j, int bit)
{
int k, m;
for(k=0; kSIZE; k++)
{
board[k][j].left = ~bit;
board[i][k].left = ~bit;
}
for(k=i/3*3; k(i/3+1)*3; k++)
for(m=j/3*3; m(j/3+1)*3; m++)
board[k][m].left = ~bit;
}
void init()
{
int i, j;
for(i=0; iSIZE; i++)
for(j=0; jSIZE; j++)
if(board[i][j].num 0)
sub(i, j, 1(board[i][j].num-1));
else if(board[i][j].try 0)
sub(i, j, 1(board[i][j].try-1));
}
void add(int i, int j, int bit)
{
int k, m;
for(k=0; kSIZE; k++)
{
board[k][j].left |= bit;
board[i][k].left |= bit;
}
for(k=i/3*3; k(i/3+1)*3; k++)
for(m=j/3*3; m(j/3+1)*3; m++)
board[k][m].left |= bit;
}
void solve(int pos)
{
int i=pos/SIZE;
int j=pos%SIZE;
int bit, left;
if(pos == SIZE*SIZE)
{
printf_res();
exit(0);
}
if(board[i][j].num 0)
solve(pos+1);
else
for(left=board[i][j].left; left; left=(left-1))
{
bit = get_low_bit(left);
sub(i, j, bit);
board[i][j].try = bit2num(bit);
solve(pos+1);
add(i, j, bit);
board[i][j].try=0;
init();
}
}
int main()
{
int i, j, c;
for(i=0; iSIZE; i++)
for(j=0; jSIZE; j++)
{
while((c=getchar())'0' || c'9')
;
board[i][j].num = c-'0';
board[i][j].try = 0;
board[i][j].left = 0x0001FF;
}
init();
solve(0);
return 0;
}
if (sd[i] = '1' sd[i] = '9') sd[i] -= '0'; else sd[i] = 0; } show(); return true;} //递归解决数独void force(int k){ if (isok) return; if (!sd[