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Revone 2023-09-07 22:28:00 +08:00
parent 26ab0be17b
commit c7e1887b96
4 changed files with 157 additions and 17 deletions
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2
README.md
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@ -358,6 +358,8 @@ import {UndirectedGraph} from 'data-structure-typed';
![](https://github.com/zrwusa/assets/blob/master/images/data-structure-typed/examples/dfs-pre-order.webp)
![](https://github.com/zrwusa/assets/blob/master/images/data-structure-typed/examples/map-graph.webp)
![](https://github.com/zrwusa/assets/blob/master/images/data-structure-typed/examples/test-graphs.webp)
![](https://github.com/zrwusa/assets/blob/master/images/data-structure-typed/examples/cut-off-trees-for-golf.webp)

113
src/data-structures/graph/map-graph.ts
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@ -1,18 +1,57 @@
import {MapGraphCoordinate, VertexId } from '../types';
import {MapGraphCoordinate, VertexId} from '../types';
import {DirectedEdge, DirectedGraph, DirectedVertex} from './directed-graph';
export class MapVertex<T = any> extends DirectedVertex<T> {
/**
* The constructor function initializes an object with an id, latitude, longitude, and an optional value.
* @param {VertexId} id - The `id` parameter is of type `VertexId` and represents the identifier of the vertex.
* @param {number} lat - The "lat" parameter represents the latitude of a vertex. Latitude is a geographic coordinate
* that specifies the north-south position of a point on the Earth's surface. It is measured in degrees, with positive
* values representing points north of the equator and negative values representing points south of the equator.
* @param {number} long - The "long" parameter represents the longitude of a location. Longitude is a geographic
* coordinate that specifies the east-west position of a point on the Earth's surface. It is measured in degrees, with
* values ranging from -180 to 180.
* @param {T} [val] - The "val" parameter is an optional value of type T. It is not required to be provided when
* creating an instance of the class.
*/
constructor(id: VertexId, lat: number, long: number, val?: T) {
super(id, val);
this.lat = lat;
this.long = long;
this._lat = lat;
this._long = long;
}
private _lat: number;
get lat(): number {
return this._lat;
}
set lat(value: number) {
this._lat = value;
}
private _long: number;
get long(): number {
return this._long;
}
set long(value: number) {
this._long = value;
}
lat: number;
long: number;
}
export class MapEdge<T = any> extends DirectedEdge<T> {
/**
* The constructor function initializes a new instance of a class with the given source, destination, weight, and
* value.
* @param {VertexId} src - The `src` parameter is the source vertex ID. It represents the starting point of an edge in
* a graph.
* @param {VertexId} dest - The `dest` parameter is the identifier of the destination vertex for an edge.
* @param {number} [weight] - The weight parameter is an optional number that represents the weight of the edge.
* @param {T} [val] - The "val" parameter is an optional parameter of type T. It is used to store additional
* information or data associated with the edge.
*/
constructor(src: VertexId, dest: VertexId, weight?: number, val?: T) {
super(src, dest, weight, val);
}
@ -20,19 +59,69 @@ export class MapEdge<T = any> extends DirectedEdge<T> {
export class MapGraph<V extends MapVertex<V['val']> = MapVertex, E extends MapEdge = MapEdge> extends DirectedGraph<V, E> {
constructor(topLeft: MapGraphCoordinate, bottomRight: MapGraphCoordinate) {
/**
* The constructor function initializes the origin and bottomRight properties of a MapGraphCoordinate object.
* @param {MapGraphCoordinate} origin - The `origin` parameter is a `MapGraphCoordinate` object that represents the
* starting point or reference point of the map graph. It defines the coordinates of the top-left corner of the map
* graph.
* @param {MapGraphCoordinate} [bottomRight] - The `bottomRight` parameter is an optional parameter of type
* `MapGraphCoordinate`. It represents the bottom right coordinate of a map graph. If this parameter is not provided,
* it will default to `undefined`.
*/
constructor(origin: MapGraphCoordinate, bottomRight?: MapGraphCoordinate) {
super();
this.topLeft = topLeft;
this.bottomRight = bottomRight;
this._origin = origin;
this._bottomRight = bottomRight;
}
topLeft: MapGraphCoordinate;
bottomRight: MapGraphCoordinate;
private _origin: MapGraphCoordinate = [0, 0];
override createVertex(id: VertexId, val?: V['val'], lat: number = this.topLeft[0], long: number = this.topLeft[1]): V {
get origin(): MapGraphCoordinate {
return this._origin;
}
set origin(value: MapGraphCoordinate) {
this._origin = value;
}
private _bottomRight: MapGraphCoordinate | undefined;
get bottomRight(): MapGraphCoordinate | undefined {
return this._bottomRight;
}
set bottomRight(value: MapGraphCoordinate | undefined) {
this._bottomRight = value;
}
/**
* The function creates a new vertex with the given id, value, latitude, and longitude.
* @param {VertexId} id - The id parameter is the unique identifier for the vertex. It is of type VertexId, which could
* be a string or a number depending on how you define it in your code.
* @param [val] - The `val` parameter is an optional value that can be assigned to the `val` property of the vertex. It
* is of type `V['val']`, which means it should be of the same type as the `val` property of the vertex class `V`.
* @param {number} lat - The `lat` parameter represents the latitude of the vertex. It is a number that specifies the
* position of the vertex on the Earth's surface in the north-south direction.
* @param {number} long - The `long` parameter represents the longitude coordinate of the vertex.
* @returns The method is returning a new instance of the `MapVertex` class, casted as type `V`.
*/
override createVertex(id: VertexId, val?: V['val'], lat: number = this.origin[0], long: number = this.origin[1]): V {
return new MapVertex(id, lat, long, val) as V;
}
/**
* The function creates a new instance of a MapEdge with the given source, destination, weight, and value.
* @param {VertexId} src - The source vertex ID of the edge. It represents the starting point of the edge.
* @param {VertexId} dest - The `dest` parameter is the identifier of the destination vertex for the edge being
* created.
* @param {number} [weight] - The `weight` parameter is an optional number that represents the weight of the edge. It
* is used to assign a numerical value to the edge, which can be used in algorithms such as shortest path algorithms.
* If the weight is not provided, it can be set to a default value or left undefined.
* @param [val] - The `val` parameter is an optional value that can be assigned to the edge. It can be of any type,
* depending on the specific implementation of the `MapEdge` class.
* @returns a new instance of the `MapEdge` class, casted as type `E`.
*/
override createEdge(src: VertexId, dest: VertexId, weight?: number, val?: E['val']): E {
return new MapEdge(src, dest, weight, val) as E;
}

13
tests/unit/data-structures/binary-tree/overall.test.ts
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@ -33,11 +33,14 @@ describe('Overall BinaryTree Test', () => {
objBST.add(11, {id: 11, keyA: 11});
objBST.add(3, {id: 3, keyA: 3});
objBST.addMany([{id: 15, keyA: 15}, {id: 1, keyA: 1}, {id: 8, keyA: 8},
{id: 13, keyA: 13}, {id: 16, keyA: 16}, {id: 2, keyA: 2},
{id: 6, keyA: 6}, {id: 9, keyA: 9}, {id: 12, keyA: 12},
{id: 14, keyA: 14}, {id: 4, keyA: 4}, {id: 7, keyA: 7},
{id: 10, keyA: 10}, {id: 5, keyA: 5}]);
objBST.addMany([15, 1, 8, 13, 16, 2, 6, 9, 12, 14, 4, 7, 10, 5],
[
{id: 15, keyA: 15}, {id: 1, keyA: 1}, {id: 8, keyA: 8},
{id: 13, keyA: 13}, {id: 16, keyA: 16}, {id: 2, keyA: 2},
{id: 6, keyA: 6}, {id: 9, keyA: 9}, {id: 12, keyA: 12},
{id: 14, keyA: 14}, {id: 4, keyA: 4}, {id: 7, keyA: 7},
{id: 10, keyA: 10}, {id: 5, keyA: 5}
]);
objBST.remove(11);

46
tests/unit/data-structures/graph/map-graph.test.ts Normal file
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@ -0,0 +1,46 @@
import {MapGraph, MapVertex} from '../../../../src';
describe('MapGraph Operation Test', () => {
it('dijkstra shortest path', () => {
const mapGraph = new MapGraph([5.500338, 100.173665]);
mapGraph.addVertex(new MapVertex('Surin', 5.466724, 100.274805));
mapGraph.addVertex(new MapVertex('Batu Feringgi Beach', 5.475141, 100.276670));
mapGraph.addVertex(new MapVertex('Lotus', 5.459044, 100.308767));
mapGraph.addVertex(new MapVertex('The Breeza', 5.454197, 100.307859));
mapGraph.addVertex(new MapVertex('Hard Rock Hotel', 5.467850, 100.241876));
mapGraph.addVertex(new MapVertex('Mira', 5.456749, 100.286650));
mapGraph.addVertex(new MapVertex('Penang Bible Church', 5.428683, 100.314825));
mapGraph.addVertex(new MapVertex('Queensbay', 5.332760, 100.306651));
mapGraph.addVertex(new MapVertex('Saanen Goat Farm', 5.405738, 100.207699));
mapGraph.addVertex(new MapVertex('Trinity Auto', 5.401126, 100.303739));
mapGraph.addVertex(new MapVertex('Penang Airport', 5.293185, 100.265772));
mapGraph.addEdge('Surin', 'Lotus', 4.7);
mapGraph.addEdge('Lotus', 'The Breeza', 1);
mapGraph.addEdge('Batu Feringgi Beach', 'Hard Rock Hotel', 5.2);
mapGraph.addEdge('Surin', 'Mira', 2.8);
mapGraph.addEdge('Mira', 'Penang Bible Church', 7.0);
mapGraph.addEdge('Lotus', 'Penang Bible Church', 5.7);
mapGraph.addEdge('Penang Bible Church', 'Queensbay', 13.9);
mapGraph.addEdge('Hard Rock Hotel', 'Saanen Goat Farm', 18.5);
mapGraph.addEdge('The Breeza', 'Trinity Auto', 9.1);
mapGraph.addEdge('Trinity Auto', 'Saanen Goat Farm', 26.3);
mapGraph.addEdge('The Breeza', 'Penang Airport', 24.8);
mapGraph.addEdge('Penang Airport', 'Saanen Goat Farm', 21.2);
const expected1 = ['Surin', 'Lotus', 'The Breeza', 'Trinity Auto', 'Saanen Goat Farm'];
const minPathBetween = mapGraph.getMinPathBetween('Surin', 'Saanen Goat Farm');
expect(minPathBetween?.map(v => v.id)).toEqual(expected1);
const surinToSaanenGoatFarmDij = mapGraph.dijkstra('Surin', 'Saanen Goat Farm', true, true);
expect(surinToSaanenGoatFarmDij?.minPath.map(v => v.id)).toEqual(expected1);
expect(surinToSaanenGoatFarmDij?.minDist).toBe(41.1);
mapGraph.addEdge('Surin', 'Batu Feringgi Beach', 1.5);
const expected2 = ['Surin', 'Batu Feringgi Beach', 'Hard Rock Hotel', 'Saanen Goat Farm'];
const minPathBetweenViaBFB = mapGraph.getMinPathBetween('Surin', 'Saanen Goat Farm', true);
expect(minPathBetweenViaBFB?.map(v => v.id)).toEqual(expected2);
const surinToSaanenGoatFarmViaDij = mapGraph.dijkstra('Surin', 'Saanen Goat Farm', true, true);
expect(surinToSaanenGoatFarmViaDij?.minPath.map(v => v.id)).toEqual(expected2);
expect(surinToSaanenGoatFarmViaDij?.minDist).toBe(25.2);
});
});