深搜(DFS)广搜(BFS)详解

时间:2023-12-20 09:24:08

图的深搜与广搜

一、介绍:

BFS:这是一种基于队列这种数据结构的搜索方式,它的特点是由每一个状态可以扩展出许多状态,然后再以此扩展,直到找到目标状态或者队列中头尾指针相遇,即队列中所有状态都已处理完毕。

DFS:基于递归的搜索方式,它的特点是由一个状态拓展一个状态,然后不停拓展,直到找到目标或者无法继续拓展结束一个状态的递归。

优缺点:

BFS:对于解决最短或最少问题特别有效,而且寻找深度小,但缺点是内存耗费量大(需要开大量的数组单元用来存储状态)。

DFS:对于解决遍历和求所有问题有效,对于问题搜索深度小的时候处理速度迅速,然而在深度很大的情况下效率不高

总结:不管是BFS还是DFS,它们虽然好用,但由于时间和空间的局限性,以至于它们只能解决数据量小的问题。

二、过程

1.广度优先搜索(BFS

广度优先搜索在进一步遍历图中顶点之前,先访问当前顶点的所有邻接结点。

  a
.首先选择一个顶点作为起始结点,并将其染成灰色,其余结点为白色。
  b.
将起始结点放入队列中。
  c.
从队列首部选出一个顶点,并找出所有与之邻接的结点,将找到的邻接结点放入队列尾部,将已访问过结点涂成黑色,没访问过的结点是白色。如果顶点的颜色是灰色,表示已经发现并且放入了队列,如果顶点的颜色是白色,表示还没有发现。
  d.
按照同样的方法处理队列中的下一个结点。
基本就是出队的顶点变成黑色,在队列里的是灰色,还没入队的是白色。

用一副图来表达这个流程如下:

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" alt="" name="图片 1" width="218" height="215" align="bottom" border="0" vspace="1" />

1.初始状态,从顶点1开始,队列={1}

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*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" alt="" name="图片 2" width="232" height="225" align="bottom" border="0" vspace="1" />

2.访问1的邻接顶点,1出队变黑,2,3入队,队列={2,3,}

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*b98SwZtE4SFXCEeSFmIYJ4M9ssoad/AJiEe1FmwnHVqVlPy0nWBrgUoRkUN14bI0eGBPCG65yEulI5lZGRQdnZ2sWNAWBBm06ZNWXmbv78/czPxPNZ7eMDVFS2fvYnPEFg6RERRK4rdcfecuCas6/LZZGtguHcgytr8BPc1so4nRQS767JDRCl0K0AgdiSIAoEFRJAEIsLoeggpICCAbTWGbnpxzQjwetGVxXvE98Gi4oF/Q9D4vvFmnfYMUhXomFCja8IW0bUARUTrZFiuBgFhp9w7d+6wLnpESiFCUYBiMAciQ2IdD7wPXyFGceIZFx7HmtiEAIGhAEVhwZJBeHjA+uEh9hGKbiseeA9eL4pOFDQXH8fa2IwAgaFoICKIDcKC1RP3jzd+vfha8WH4PIdjbWxKgIaIYhQtnSmv53CUxmYFKMKFxdEyNi9ADkfLcAFyOCrCBcjhqAgXIIejIlyAHI6KcAFyOCrCBcjhqAgXIIejIlyAHI6KcAFyOCrCBcjhqAgXIIejIlyAHI6KcAFyOCrCBcjhqAgXIIejIv8Px/QfsAV9uxwAAAAASUVORK5CYII=" alt="" name="图片 3" width="224" height="225" align="bottom" border="0" vspace="1" />

3.访问2的邻接结点,2出队,4入队,队列={3,4}

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" alt="" name="图片 4" width="226" height="209" align="bottom" border="0" vspace="1" />

4.访问3的邻接结点,3出队,队列={4}

aaarticlea/png;base64,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" alt="" name="图片 5" width="231" height="199" align="bottom" border="0" hspace="1" vspace="1" />

5.访问4的邻接结点,4出队,队列={
空}

从顶点1开始进行广度优先搜索:

初始状态,从顶点1开始,队列={1}

访问1的邻接顶点,1出队变黑,2,3入队,队列={2,3,}

访问2的邻接结点,2出队,4入队,队列={3,4}

访问3的邻接结点,3出队,队列={4}

访问4的邻接结点,4出队,队列={
空}

结点5对于1来说不可达。

2.深度优先搜索(DFS

深度优先搜索在搜索过程中访问某个顶点后,需要递归地访问此顶点的所有未访问过的相邻顶点。

初始条件下所有节点为白色,选择一个作为起始顶点,按照如下步骤遍历:

a. 选择起始顶点涂成灰色,表示还未访问

b. 从该顶点的邻接顶点中选择一个,继续这个过程(即再寻找邻接结点的邻接结点),一直深入下去,直到一个顶点没有邻接结点了,涂黑它,表示访问过了

c. 回溯到这个涂黑顶点的上一层顶点,再找这个上一层顶点的其余邻接结点,继续如上操作,如果所有邻接结点往下都访问过了,就把自己涂黑,再回溯到更上一层。

d. 上一层继续做如上操作,知道所有顶点都访问过。

用图可以更清楚的表达这个过程:(注意:图画错了,请将3->4这条路径理解成4->3)

aaarticlea/png;base64,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" 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1.初始状态,从顶点1开始

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" alt="" name="图片 7" width="219" height="190" align="bottom" border="0" hspace="1" />

2.依次访问过顶点1,2,3后,终止于顶点3(注意,是4->3)

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" alt="" name="图片 8" width="229" height="207" align="bottom" border="0" hspace="1" vspace="1" />

3.从顶点3回溯到顶点2,继续访问顶点5,并且终止于顶点5

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" alt="" name="图片 9" width="225" height="206" align="bottom" border="0" hspace="1" />

4.从顶点5回溯到顶点2,并且终止于顶点2

aaarticlea/png;base64,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" alt="" name="图片 10" width="212" height="212" align="bottom" border="0" />

5.从顶点2回溯到顶点1,并终止于顶点1

aaarticlea/png;base64,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" alt="" name="图片 11" width="232" height="205" align="bottom" border="0" vspace="1" />

6.从顶点4开始访问,并终止于顶点4

从顶点1开始做深度搜索:

初始状态,从顶点1开始

依次访问过顶点1,2,3后,终止于顶点3(再次提醒,4->3)

从顶点3回溯到顶点2,继续访问顶点5,并且终止于顶点5

从顶点5回溯到顶点2,并且终止于顶点2

从顶点2回溯到顶点1,并终止于顶点1

从顶点4开始访问,并终止于顶点4

三、模板

  1.深搜

#include <iostream>
#include <cstdio>
#include <cstring>
#include <algorithm>
#include <cmath>
using namespace std;
char map[][];//用来存储图的信息 /*标记是否搜索过,本题目没有使用,因为是一次访问,直接将访问过的修改即可*/
int logo[][]; int m,n,sum; /*表示八个方向,四个方向时,将后面四组删掉就可以了*/
int dir[][]= {,, ,-, ,, -,, ,, ,-, -,, -,-}; void DFS(int x,int y)
{
if(x>=&&y>=&&x<n&&y<m)//这里是判断是否越界,根据题目要求改写
{
if(map[x][y]=='W')//如果符合条件就继续递归。
{
map[x][y]='.';//标记为‘.’防止多次访问
for(int i=; i<; i++)//因为八个方向,所以循环八次。
DFS(x+dir[i][],y+dir[i][]);
}
}
}
int main()
{
while(~scanf("%d%d",&n,&m))
{
sum=;
memset(logo,,sizeof(map));
getchar();
for(int i=; i<n; i++)
{
for(int j=; j<m; j++)
{
cin>>map[i][j];
}
getchar();
}
for(int i=; i<n; i++)
{
for(int j=; j<m; j++)
if(map[i][j]=='W')
{
DFS(i,j);
sum++;//计数
}
}
cout<<sum<<endl;
}
}

  2.广搜

#include <iostream>
#include <cstdio>
#include <cstring>
#include <algorithm>
#include <cmath>
#include <queue>
#define MAX 0x3f3f3f3f
using namespace std;
int map[][];//存节点信息
int vis[][];//标记数组
int dir[][]= {-,, ,, ,, ,-};//上下左右四个方向
int end;
struct node
{
int x,y;//两点表示节点位置
int time;
} start;//入队列使用
queue<node> q;//队列,自己维护用来存储节点信息
int bfs(int x,int y)
{
memset(vis,,sizeof(vis));
start.x=x,start.y=y,start.time=;//将传递过来的0.0节点放入结构体
vis[x][y]=;//标记为已搜过
q.push(start);//入队列
while(!q.empty())
{
node now=q.front();//取队头元素
q.pop();
if(map[now.x][now.y]==MAX)
{
return now.time;//如果符合条件,返回;根据题意自己写符合的条件。
}
for(int i=; i<; i++)//四个方向入队列
{
start.x=now.x+dir[i][],start.y=now.y+dir[i][];//将第一个方向的入队列
start.time=now.time+;
if(start.x>=&&start.y>=&&vis[start.x][start.y]==&&start.time<map[start.x][start.y])//判断是否越界
{
vis[start.x][start.y]=;
q.push(start);
}
}
}
return -;
}
int main()
{
int n;
while(~scanf("%d",&n))
{
memset(map,MAX,sizeof(map));
for(int j=; j<n; j++)
{
int x,y,time;
scanf("%d%d%d",&x,&y,&time);
if(map[x][y]>time)
map[x][y]=time;
for(int i=; i<; i++)//自己建图过程,一般不需要自己建图
{
int cx,cy;
cx=x+dir[i][],cy=y+dir[i][];
if(cx>=&&cy>=)
if(map[cx][cy]>time)
map[cx][cy]=time;
}
}
int ans=bfs(,);//从00点开始广搜,根据题目要求具体定
cout<<ans<<endl;
} }