算法竞赛入门经典-习题3-6 纵横字谜的答案(Crossword Answers, ACM/ICPC World Finals 1994,UVa232)
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习题3-6纵横字谜的答案(Crossword Answers, ACM/ICPC World Finals 1994,UVa232)
输入一个r行c列(1≤r,c≤10)的网格,黑格用“*”表示,每个白格都填有一个字母。 如果一个白格的左边相邻位置或者上边相邻位置没有白格(可能是黑格,也可能出了网格边界),则称这个白格是一个起始格。首先把所有起始格按照从上到下、 从左到右的顺序编号为1, 2, 3,…,如图3-7所示。
#include<stdio.h>
#include<string.h>int main()
{
char a[10][10];
int b[10][10];
int r,c;
int Num = 1;
int i,j;
while(scanf("%d",&r)!=EOF && r)
{
scanf("%d",&c);
printf("puzzle #%d:\n",Num++);
for(i = 0; i < r; i++)
{
scanf("%s",a[i]);
}
int n = 1;
memset(b,0,sizeof(b));
for(i = 0; i < r; i ++)
{
for(j = 0; j < c; j++)
{
if((i == 0 || j == 0 || a[i-1][j] == '*' || a[i][j-1] == '*') && a[i][j] != '*')
{
b[i][j] = n++;
}
}
}
printf("Across");
for(i = 0; i < r; i++)
{
int flag = 1;
for(j = 0; j < c; j++)
{
if(a[i][j] != '*')
{
if(flag)
{
printf("\n %d.",b[i][j]);
printf("%c",a[i][j]);
flag = 0;
}
else
{
printf("%c",a[i][j]);
}
}
if(a[i][j] == '*' || j == (c-1))
{
flag = 1;
}
}
}
printf("\nDown");
for(i = 0; i < r; i++)
{
for(j = 0; j < c; j++)
{
if(b[i][j])
{
printf("\n %d.",b[i][j]);
printf("%c",a[i][j]);
for(int x = i + 1, int y = j; x < r; x++)
{
if(a[x][y] != '*')
{
printf("%c",a[x][y]);
b[x][y] = 0;
}
else
{
break;
}
}
}
}
}
printf("\n");
}
return 0;
}
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