1.6.2 扫雷 Minesweeper

思路&题解

PC/UVA 110102/10189
水题。看样例输入输出即可明白题意。我的做法是用一个hash直接处理就成

//author: CHC
//First Edit Time:	2014-01-10 23:39
//Last Edit Time:	2014-01-10 23:39
//Filename:1.cpp
#include <iostream>
#include <cstdio>
#include <string.h>
#include <queue>
#include <algorithm>
using namespace std;
int n,m;
char map[120][120];
int main()
{
    int cas=0;
    int flag=0;
    while(~scanf("%d%d",&n,&m)&&(n||m))
    {
        if(flag)puts("");
        memset(map,'0',sizeof(map));
        for(int i=1;i<=n;i++)
        for(int j=1;j<=m;j++)
        {
            char x;
            scanf(" %c",&x);
            if(x=='*')
            {
                map[i][j]='*';
                for(int ii=i-1;ii<=i+1;ii++)
                for(int jj=j-1;jj<=j+1;jj++)
                    if(map[ii][jj]!='*')++map[ii][jj];
            }
        }
        printf("Field #%d:\n",++cas);
        for(int i=1;i<=n;i++,puts(""))
        for(int j=1;j<=m;j++)
            putchar(map[i][j]);
        flag=1;
    }
    return 0;
}

Minesweeper

Have you ever played Minesweeper? This cute little game comes with a certain operating system whose name we can’t remember. The goal of
the game is to find where all the mines are located within a M x N field.
The game shows a number in a square which tells you how many mines there are adjacent to that square. Each square has at most eight adjacent squares. The 4 x 4 field on the left contains two mines, each represented by a ‘*’ character. If we represent the same field by the hint numbers described above, we end up with the field on the right:

*...  
....  
.*..  
....  

*100  
2210  
1*10  
1110  

Input

The input will consist of an arbitrary number of fields. The first line of each field contains two integers n and m ( 0 < n, m < 100) which stand for the number of lines and columns of the field, respectively. Each of the next n lines contains exactly m characters, representing the field.
Safe squares are denoted by ‘.’ and mine squares by ‘*’ , both without the quotes. The first field line where n = m = 0 represents the end of input and should not be processed.

Output

For each field, print the message Field #x: on a line alone, where x stands for the number of the field starting from 1.
The next n lines should contain the field with the ‘.’ characters replaced by the number of mines adjacent to that square. There must be an empty line between field outputs.

Sample Input

4 4  
*...  
....  
.*..  
....  
3 5  
**...  
.....  
.*...  
0 0  

Sample Output

Field #1:  
*100  
2210  
1*10  
1110  

Field #2:  
**100  
33200  
1*100