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#include<bits/stdc++.h> using namespace std; int a[11][11]; bool visited[11]; void store_graph(){//邻接矩阵存储图 int i,j; for(i = 1; i <= 10; i++) for(j = 1; j <= 10; j++) cin>>a[i][j]; } void dfs_graph(){ void dfs(int v); memset(visited,false…
//采用不同的图存储结构结构邻接矩阵.邻接表分别dfs,我想我是寂寞了吧,应该试试并查集,看见可以用并查集的就用dfs,bfs代替......怕了并查集了 //邻接矩阵dfs #include<cstdio>#include<algorithm>using namespace std;const int maxn=1001;int g[maxn][maxn];int n,tmp;bool vis[maxn];void dfs(int v){ vis[v]=true; for(int…
深度优先搜索 深度优先搜索,我们以无向图为例. 图的深度优先搜索(Depth First Search),和树的先序遍历比较类似. 它的思想:假设初始状态是图中所有顶点均未被访问,则从某个顶点v出发,首先访问该顶点,然后依次从它的各个未被访问的邻接点出发深度优先搜索遍历图,直至图中所有和v有路径相通的顶点都被访问到. 若此时尚有其他顶点未被访问到,则另选一个未被访问的顶点作起始点,重复上述过程,直至图中所有顶点都被访问到为止. 显然,深度优先搜索是一个递归的过程. 邻接矩阵DFS package…
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写于一只蹲在角落的蒟蒻-Z__X... 2020.2.7,图论和 \(dp\) 终于告一段落.蓦然回首,好似已走过许多...不曾细细品味,太多太多又绵延不断地向我涌来... 谨以此纪念 逝去 的图论和 \(dp\); 图论 图的存储 首先,图论的基础:存储.这里介绍几种存储结构: 邻接矩阵 一种最简单,暴力的存储结构,二维数组存储: 注:这是读入方式的一种,具体看题目. cpp cin >> n >> m; for (int i=1;i=m;i++) { cin >>…
sdut 2140 图结构练习——判断给定图是否存在合法拓扑序列 Time Limit: 1000ms   Memory limit: 65536K  有疑问?点这里^_^ 题目描述  给定一个有向图,判断该有向图是否存在一个合法的拓扑序列. 输入  输入包含多组,每组格式如下. 第一行包含两个整数n,m,分别代表该有向图的顶点数和边数.(n<=10) 后面m行每行两个整数a b,表示从a到b有一条有向边.   输出  若给定有向图存在合法拓扑序列,则输出YES:否则输出NO.   示例输入 1…
数据结构之图 图(Graph) 包含 一组顶点:通常用V (Vertex) 表示顶点集合 一组边:通常用E (Edge) 表示边的集合 边是顶点对:(v, w) ∈E ,其中v, w ∈ V 有向边<v, w> 表示从v指向w的边(单行线) 不考虑重边和自回路 无向图:边是无向边(v, w) 有向图:边是有向边<v, w> 连通:如果从V到W存在一条(无向)路径,则称V和W是连通的 连通图(Connected Graph):如果对于图的任一两个顶点v.w∈V,v和w都是连通的,则称…