每日一题3.30.2

代码实现：

#define _CRT_SECURE_NO_WARNINGS 1

#include<iostream>
#include<cstdio>
#include<algorithm>
using namespace std;
int map[10][10];
int vis[10][10];
int n, m;
int head, rear;
//四个方向 
int dx[4] = { 0, 1, -1, 0 };
int dy[4] = { 1, 0, 0, -1 };
struct node{
	int x;
	int y;
	int pre;
}num[1100];
void print(int n)
{

	if (num[n].pre != -1){
		print(num[n].pre);
		printf("(%d,%d)\n", num[n].x, num[n].y);
	}
}
void bfs(){
	head = 0;
	rear = 0;
	num[rear].x = 0, num[rear].y = 0, num[rear++].pre = -1;
	while (head<rear){
		for (int i = 0; i<4; i++){  //四个方向搜搜搜 
			int bj1 = num[head].x + dx[i];
			int bj2 = num[head].y + dy[i];
			if (bj1 >= n || bj2 >= m || bj1<0 || bj2<0 || map[bj1][bj2] == 1)
				continue;
			map[bj1][bj2] = 1;
			num[rear].x = bj1;
			num[rear].y = bj2;
			num[rear].pre = head;
			rear++;
			if (bj1 == n - 1 && bj2 == m - 1) //到达终点 
				print(head);

		}
		head++;
	}
}
int main()
{

	while (cin >> n >> m)
	{
		for (int i = 0; i < n; i++){
			for (int j = 0; j < m; j++){
				scanf("%d", &map[i][j]);
			}
		}
		printf("(0,0)\n");
		bfs();
		printf("(%d,%d)\n", n - 1, m - 1);
	}
	
	system("pause");
	return 0;
}

参考答案：