private void BFS(Graph g, int v)
{
Queue <int> queue = new Queue <int>();
marked[v] = true;
queue.Enqueue(v);
ListBag <int> adj = g.adj[v];
BagNode <int> node = adj.first;
while (queue.Count != 0)
{
int s = queue.Dequeue();
Debug.Log("出队:" + s);
//遍历周围的点
while (node.next != null)
{
node = node.next;
if (!marked[node.t])
{
marked[node.t] = true;
edgeTo[node.t] = v;
BFS(g, node.t);
//queue.Enqueue(node.t);
}
}
}
}
private void Visit(EdgeWeightedGraph g, int v)
{
marked[v] = true;
ListBag <Edge> list = g.Adj()[v];
BagNode <Edge> node = list.first;
while (node != null)
{
int w = node.t.Other(v);
if (!marked[w])
{
//更新权值最小的边
if (node.t.Weight() < distTo[w])
{
edgeTo[w] = node.t;
distTo[w] = node.t.Weight();
//记录最近的顶点
if (same)
{
pq[pq.Count - 1] = w;
}
else
{
same = true;
pq.Add(w);
}
}
}
node = node.next;
}
}
public EdgeWeightedGraph(int v)
{
this.v = v;
this.e = 0;
adj = new ListBag <Edge> [v];
for (int i = 0; i < v; i++)
{
adj[i] = new ListBag <Edge>();
}
}
public Graph(int v)
{
this.v = v;
this.e = 0;
adj = new ListBag <int> [v];
for (int i = 0; i < v; i++)
{
adj[i] = new ListBag <int>();
}
}
public async void RefreshListBag()
{
await Task.Run(() =>
{
var taskListBag = _diceDataBase.GetBagAsync();
var listBag = taskListBag.Result;
ListBag.Clear();
foreach (var item in listBag)
{
ListBag.Add(item);
}
});
}
private void DFS(Digraph g, int v)
{
marked[v] = true;
ListBag <int> list = g.Adj(v);
BagNode <int> node = list.first;
while (node != null)
{
if (!marked[node.t])
{
DFS(g, node.t);
}
node = node.next;
}
}
private void Visit(EdgeWeightedGraph g, int v)
{
marked[v] = true;
ListBag <Edge> list = g.Adj()[v];
BagNode <Edge> node = list.first;
while (node != null)
{
if (!marked[node.t.Other(v)])
{
pq.Add(node.t);
}
node = node.next;
}
}
/// <summary>
/// 有向图取反
/// adj可以获取每个顶点所连向的点
/// 取反后可以获取每个顶点被谁指向
/// </summary>
public Digraph Reverse()
{
Digraph r = new Digraph(v);
for (int i = 0; i < v; i++)
{
ListBag <int> list = adj[i];
BagNode <int> node = list.first;
while (node != null)
{
//把值作为key添加进新的图里
r.AddEdge(node.t, i);
node = node.next;
}
}
return(r);
}
private void DFS(Digraph g, int v)
{
pre.Add(v);
marked[v] = true;
ListBag <int> list = g.Adj(v);
BagNode <int> node = list.first;
while (node != null)
{
if (!marked[node.t])
{
DFS(g, node.t);
}
node = node.next;
}
post.Add(v);
reversePost.Push(v);
}
/// <summary>
/// 遍历该顶点的领接表
/// 相邻的用marked=true
/// </summary>
private void DFS(Graph g, int v, int w)
{
marked[v] = true;
count++;
ListBag <int> adj = g.adj[v];
BagNode <int> node = adj.first;
if (node == null)
{
return;
}
while (node != null)
{
Debug.Log("下一个点:" + node.t);
if (!marked[node.t])
{
//marked[node.t] = true;
//count++;
//一个点不会赋值两次
edgeTo[node.t] = v;
//相邻两点颜色值不同
colors[node.t] = !colors[v];
DFS(g, node.t, v);
}
else if (node.t != w)
{
hasCycle = true;
}
if (colors[node.t] == colors[v])
{
isTwoColor = false;
}
node = node.next;
}
}
public KruskalMST(EdgeWeightedGraph g)
{
mst = new List <Edge>();
pq = new List <Edge>();
ListBag <Edge>[] list = g.Adj();
for (int i = 0; i < list.Length; i++)
{
ListBag <Edge> e = list[i];
BagNode <Edge> node = e.first;
while (node != null)
{
//Debug.Log(node.t.Weight());
pq.Add(node.t);
node = node.next;
}
}
//每次添加一条权值最小的边
//多花一个数组空间检测是否形成环
while (pq.Count != 0 && mst.Count < g.V() - 1)
{
int min = GetMinWeight();
Edge e = pq[min];
pq.RemoveAt(min);
if (!Connected(e))
{
int v = e.Either();
int w = e.Other(v);
//Debug.Log(v + "," + w);
mst.Add(e);
}
}
}
private void DFS(Graph g, int v)
{
marked[v] = true;
id[v] = count;
ListBag <int> adj = g.adj[v];
BagNode <int> node = adj.first;
if (node == null)
{
return;
}
while (node.next != null)
{
node = node.next;
if (!marked[node.t])
{
DFS(g, node.t);
}
}
}
private void DFS(Digraph g, int v)
{
onStack[v] = true;
marked[v] = true;
ListBag <int> list = g.Adj(v);
BagNode <int> node = list.first;
//遍历v的有向路径
while (node != null)
{
if (HasCycle())
{
return;
}
else if (!marked[node.t])
{
edgeTo[node.t] = v;
DFS(g, node.t);
}
else if (onStack[node.t])
{
//onStack记录了当前这条路径中已经遍历过的顶点
//所以重复的顶点肯定形成了有向环
cycle = new List <int>();
for (int i = v; i != node.t; i = edgeTo[i])
{
cycle.Add(i);
}
cycle.Add(node.t);
cycle.Add(v);
}
}
onStack[v] = false;
}
public DirectedDFS(Digraph g, ListBag <int> sources)
{
marked = new bool[g.V()];
}