洛谷 P2670 [NOIP2015 普及组] 扫雷游戏 题解 C/C++

思路如下:

首先将地雷分布读入二维字符数组中,如果是地雷" * "就输出,否则在八个方向上遍历即可,可以用两个一维数组控制方向,详见代码sweep()函数

//#define LOCAL
#include <iostream>
#include <cstdio>
#include <cstring>
#include <string>
#include <cmath>
#include <algorithm>
#include <cctype>
#include <sstream>
#define inf 0x3f3f3f3f
#define eps 1e-6
using namespace std;
#define clr(x) memset(x,0,sizeof((x)))
const int maxn = 1e4+1;//2e6+1
#define MAX(a,b,c) ((a)>(b)?((a)>(c)?(a):(c)):((b)>(c)?(b):(c)))
#define _max(a,b) ((a) > (b) ? (a) : (b))
#define _min(a,b) ((a) < (b) ? (a) : (b))
#define _for(a,b,c) for(int a = b;a<c;a++)
char cb[105][105];
int n,m;
int readchar() {
    
    
	int ch;
	for(;;) {
    
    
		ch = getchar();
		if(ch!='\n'&&ch!='\r')return ch;
	}
}
int a[] = {
    
    -1,0,1};
int b[] = {
    
    -1,0,1};
void sweep(int x,int y) {
    
    
	int cnt = 0;
	for(int i = 0;i<3;i++) {
    
    
		for(int j = 0;j<3;j++) {
    
    
			if(x+a[i]>=0&&y+b[j]>=0&&x+a[i]<n&&y+b[j]<m) {
    
    
				if(cb[x+a[i]][y+b[j]]=='*')cnt++;
			}
		}
	}
	cout<<cnt;
}
int main()
{
    
    
#ifdef LOCAL 
	freopen("data.in","r",stdin);
	freopen("data.out","w",stdout);
#endif
	
	cin>>n>>m;
	_for(i,0,n) {
    
    
		_for(j,0,m) {
    
    
			cb[i][j] = readchar();
		}
	}
	for(int i = 0;i<n;i++) {
    
    
		for(int j = 0;j<m;j++) {
    
    
			if(cb[i][j]=='*') {
    
    
				cout<<cb[i][j];
			}
			else sweep(i,j);
		}
		cout<<endl;
	}
    return 0;
}

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转载自blog.csdn.net/Jason__Jie/article/details/113408109