public static void Main() { BinaryHeapPriorityQueue<int> heap = new BinaryHeapPriorityQueue<int>(8); heap.Enqueue(new Node<int>(5, true)); heap.Enqueue(new Node<int>(1, true)); heap.Enqueue(new Node<int>(1, true)); heap.Enqueue(new Node<int>(1, true)); heap.DFS(); heap.DisplayAllValues(); }
protected override void OnSetUp() { base.OnSetUp(); _priorityQueue = new BinaryHeapPriorityQueue<int>(); for(int i = 0; i < ItemCount; i++) _priorityQueue.Enqueue(Rnd.Next(ItemCount)); }
public void MSAGLAstarSSSP(Vertex[] vList, Edge[,] eList, int[] degList, int source, Dictionary <Node, int> nodeId, GeometryGraph _mainGeometryGraph, int NofNodesBeforeDetour, int n, Tiling g, Tiling g1) { var q = new BinaryHeapPriorityQueue(n); vList[source].Dist = 0; q.Enqueue(source, vList[source].Dist); for (int i = 0; i < n; i++) { if (vList[i].Id != source) { vList[i].Dist = double.MaxValue; q.Enqueue(i, vList[i].Dist); } vList[i].Parent = null; vList[i].Visited = false; } Distance = 0; while (q.Count > 0) { var deq = q.Dequeue(); Vertex u = vList[deq]; u.Visited = true; if (u == null || u.Invalid) { return; } for (int neighb = 0; neighb < degList[u.Id]; neighb++) { var neighborId = eList[u.Id, neighb].NodeId; int discourage = 0; if (u.Id < NofNodesBeforeDetour && u.Id != source) { discourage = 1000; } Vertex neighbor = vList[neighborId]; double edist = MsaglUtilities.EucledianDistance(u.XLoc, u.YLoc, neighbor.XLoc, neighbor.YLoc); var tempDist = u.Dist + edist + discourage; if (tempDist >= neighbor.Dist) { continue; } neighbor.Dist = tempDist; neighbor.Parent = u; if (neighbor.Visited) { neighbor.Visited = false; q.Enqueue(neighbor.Id, neighbor.Dist); } else { q.DecreasePriority(neighbor.Id, neighbor.Dist); } } } foreach (var node in _mainGeometryGraph.Nodes) { int target = nodeId[node]; if (target == source) { continue; } Vertex route = vList[target]; int zoomlevel = Math.Max(vList[source].ZoomLevel, vList[target].ZoomLevel); Edgelist.Clear(); while (route.Parent != null) { ShortestPath.Add(route.Id); for (int neighb = 0; neighb < degList[route.Id]; neighb++) { if (eList[route.Id, neighb].NodeId == route.Parent.Id) { SetUsed(vList, eList, degList, route.Id, eList[route.Id, neighb].NodeId, zoomlevel); Edgelist.Add(new VertexNeighbor(route.Id, neighb)); break; } } route = route.Parent; } if (route.Id != source) { Debug.WriteLine("path not found"); } foreach (VertexNeighbor vn in Edgelist) { g1.AddEdge(vn.A, g.EList[vn.A, vn.Neighbor].NodeId, g.EList[vn.A, vn.Neighbor].Selected, g.EList[vn.A, vn.Neighbor].Used); } } return; }
public List <int> MSAGLAstarShortestPath(Vertex[] vList, Edge[,] eList, int[] degList, int source, int target, int n) { var q = new BinaryHeapPriorityQueue(n); vList[source].Dist = 0; vList[source].Weight = vList[source].Dist + MsaglUtilities.EucledianDistance( vList[source].XLoc, vList[source].YLoc, vList[target].XLoc, vList[target].YLoc); q.Enqueue(source, vList[source].Weight); for (int i = 0; i < n; i++) { if (vList[i].Id != source) { vList[i].Dist = double.MaxValue; vList[i].Weight = double.MaxValue; q.Enqueue(i, vList[i].Weight); } vList[i].Parent = null; vList[i].Visited = false; } Edgelist.Clear(); ShortestPath.Clear(); Distance = 0; while (q.Count > 0) { var deq = q.Dequeue(); Vertex u = vList[deq]; u.Visited = true; if (u == null || u.Invalid) { return(new List <int>()); } for (int neighb = 0; neighb < degList[u.Id]; neighb++) { var neighborId = eList[u.Id, neighb].NodeId; int discourage = 0; if (eList[u.Id, neighb].Selected == 1) { discourage = 1000; //continue; } if (eList[u.Id, neighb].NodeId == source || eList[u.Id, neighb].NodeId == target) { discourage = 0; } if (u.Id == source || u.Id == target) { discourage = 0; } Vertex neighbor = vList[neighborId]; double edist = MsaglUtilities.EucledianDistance(u.XLoc, u.YLoc, neighbor.XLoc, neighbor.YLoc); var tempDist = u.Dist + edist + discourage; if (tempDist >= neighbor.Dist) { continue; } neighbor.Dist = tempDist; var tempWeight = neighbor.Dist + MsaglUtilities.EucledianDistance(vList[target].XLoc, vList[target].YLoc, neighbor.XLoc, neighbor.YLoc); neighbor.Weight = tempWeight; neighbor.Parent = u; if (neighbor.Visited) { neighbor.Visited = false; q.Enqueue(neighbor.Id, neighbor.Weight); } else { q.DecreasePriority(neighbor.Id, neighbor.Weight); } } if (u.Id == target) { break; } } Vertex route = vList[target]; int zoomlevel = Math.Max(vList[source].ZoomLevel, vList[target].ZoomLevel); while (route.Parent != null) { ShortestPath.Add(route.Id); for (int neighb = 0; neighb < degList[route.Id]; neighb++) { if (eList[route.Id, neighb].NodeId == route.Parent.Id) { SetUsed(vList, eList, degList, route.Id, eList[route.Id, neighb].NodeId, zoomlevel); Edgelist.Add(new VertexNeighbor(route.Id, neighb)); Distance += Math.Sqrt((route.XLoc - route.Parent.XLoc) * (route.XLoc - route.Parent.XLoc) + (route.YLoc - route.Parent.YLoc) * (route.YLoc - route.Parent.YLoc)); break; } } route = route.Parent; } ShortestPath.Add(route.Id); if (route.Id != source) { Debug.WriteLine("path not found"); } return(ShortestPath); }
public void Solve() { var n = sc.Integer(); var q = sc.Integer(); var a = new List <long>() { n }; for (int i = 0; i < q; i++) { a.Add(sc.Long()); } a.Reverse(); var A = new BinaryHeapPriorityQueue(); var last = -1L; foreach (var x in a) { if (A.Count == 0) { A.Enqueue(new KeyValuePair <Number, Number>(x, 1)); } else { if (last <= x) { continue; } while (A.Any()) { if (A.Peek().Key <= x) { break; } var y = A.Dequeue(); var l = y.Key; var v = y.Value; if (A.Any() && A.Peek().Key == l) { var z = A.Dequeue(); v += z.Value; } var k = l / x; A.Enqueue(new KeyValuePair <Number, Number>(x, k * v)); if (l % x != 0) { A.Enqueue(new KeyValuePair <Number, Number>(l % x, v)); } } } last = x; } var ans = new long[n + 1]; while (A.Any()) { var p = A.Dequeue(); ans[p.Key] += p.Value; } for (int i = n - 1; i >= 0; i--) { ans[i] += ans[i + 1]; } for (int i = 0; i < n; i++) { IO.Printer.Out.WriteLine(ans[i + 1]); } }
public void Solve() { var pp = new Point(sc.Integer(), sc.Integer()); var qq = new Point(sc.Integer(), sc.Integer()); var n = sc.Integer(); var P = new Point[n + 2]; P[n] = pp; P[n + 1] = qq; var R = new int[n + 2]; for (int i = 0; i < n; i++) { P[i] = new Point(sc.Integer(), sc.Integer()); R[i] = sc.Integer(); } var dist = new double[n + 2]; for (int i = 0; i < n + 2; i++) { dist[i] = 1e18; } dist[n] = 0; var pq = new BinaryHeapPriorityQueue <KeyValuePair <int, double> >((l, r) => l.Value.CompareTo(r.Value)); pq.Enqueue(new KeyValuePair <C, double>(n, 0)); var used = new bool[n + 2]; foreach (var x in P) { Debug.WriteLine(x); } foreach (var x in R) { Debug.WriteLine(x); } while (pq.Count > 0) { var p = pq.Dequeue(); if (used[p.Key]) { continue; } Debug.WriteLine(p); used[p.Key] = true; for (int i = 0; i < n + 2; i++) { if (used[i]) { continue; } var cost = get(P[i], P[p.Key], R[i] + R[p.Key]); if (dist[i] > p.Value + cost) { dist[i] = p.Value + cost; pq.Enqueue(new KeyValuePair <C, double>(i, dist[i])); } } } IO.Printer.Out.WriteLine(dist[n + 1]); }