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我觉得我的代码 ,挺好看的,贴出来晒晒。#include<stdio.h> #include<string.h> int map[10][10],ar[80][2],used1[10][10],used2[10][10]; int judge(int j,int k,int i)//宫,j/3*3很巧妙啊 { int p,q; for(p=j/3*3;p<=j/3*3+2;p++) { for(q=k/3*3;q<=k/3*3+2;q++) { if(map[p][q]==i)return 0; } } return 1; } int dfs(int num)//0的个数 { int i,j,k; j=ar[num][0],k=ar[num][1]; if(num<0)return 1; for(i=0;i<9;i++)//填数 { if(judge(j,k,i+1)&&!used1[j][i]&&!used2[k][i])//if这后面熟悉不? { used1[j][i]=used2[k][i]=1; map[j][k]=i+1; if(dfs(num-1))return 1; used1[j][i]=used2[k][i]=0; map[j][k]=0; } } return 0; } int main() { int i,j,T,num; char str[10]; scanf("%d",&T); while(T--) { memset(used1,0,sizeof(used1)); memset(used2,0,sizeof(used2)); num=0; for(i=0;i<9;i++) { scanf("%s",str); for(j=0;j<9;j++) { map[i][j]=str[j]-'0'; if(!map[i][j])//记录0的位置 { ar[num][0]=i; ar[num][1]=j; num++; } if(map[i][j])used1[i][map[i][j]-1]=1;//记录第i行的数 } } for(j=0;j<9;j++) { for(i=0;i<9;i++) { if(map[i][j])used2[j][map[i][j]-1]=1;//记录第j列的数 } } dfs(num-1); for(i=0;i<9;i++) { for(j=0;j<9;j++) printf("%d",map[i][j]); printf("\n"); } } return 0; } Followed by: Post your reply here: |
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