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Copy path6-graph_remove_vertex.js
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184 lines (128 loc) · 3.94 KB
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//2020/10/16
//6:39pm -
// class Graph{
// constructor(){
// this.adjacencyList = {}
// }
// addVertex(vertex){
// if(!this.adjacencyList[vertex]){
// this.adjacencyList[vertex] = []
// }
// }
// addEdge(v1, v2){
// this.adjacencyList[v1].push(v2)
// this.adjacencyList[v2].push(v1)
// }
// removeEdge(v1, v2){
// this.adjacencyList[v1] = this.adjacencyList[v1].filter(v => v !== v2)
// this.adjacencyList[v2] = this.adjacencyList[v2].filter(v => v !== v1)
// }
// removeVertex(v){
// while(this.adjacencyList[v].length){
// let adjV = this.adjacencyList[v].pop()
// this.removeEdge(v, adjV)
// }
// delete this.adjacencyList[v]
// }
// }
// let g = new Graph
// g.addVertex("KEY1")
// g.addVertex("KEY2")
// g.addVertex("KEY3")
// g.addEdge("KEY2", "KEY3")
// g.addEdge("KEY1", "KEY3")
// g.addEdge("KEY1", "KEY2")
// //g.removeVertex("KEY3")
// console.log(g)
//10/16/2020
//4:42pm - 5:00pm 18min
//6:17pm - 6:37pm 20min
// class Graph {
// constructor(){
// this.adjacencyList = {}
// }
// addVertex(vertex){
// this.adjacencyList[vertex] = []
// }
// addEdge(v1, v2){
// this.adjacencyList[v1].push(v2)
// this.adjacencyList[v2].push(v1)
// }
// removeEdge(v1,v2){
// this.adjacencyList[v1] = this.adjacencyList[v1].filter(v => v !== v2)
// this.adjacencyList[v2] = this.adjacencyList[v2].filter(v => v !== v1)
// }
// removeVertex(v){
// while(this.adjacencyList[v].length){
// let adjacencyVortex = this.adjacencyList[v].pop()
// this.removeEdge(v, adjacencyVortex)
// }
// delete this.adjacencyList[v]
// }
// }
//4:00pm - 4:42pm
// class Graph{
// constructor(){
// this.adjacencyList = {}
// }
// addVertex(vertex){
// this.adjacencyList[vertex] = []
// }
// addEdge(v1, v2){
// this.adjacencyList[v1].push(v2)
// this.adjacencyList[v2].push(v1)
// }
// removeEdge(v1, v2){
// this.adjacencyList[v1] = this.adjacencyList[v1].filter(v => v !== v2)
// this.adjacencyList[v2] = this.adjacencyList[v2].filter(v => v !== v1)
// }
// removeVertex(v){
// while(this.adjacencyList[v].length){
// let adjacencyVertex = this.adjacencyList[v].pop()
// this.removeEdge(v, adjacencyVertex)
// }
// delete this.adjacencyList[v]
// }
// }
// class Graph{
// constructor(){
// this.adjacencyList = {};
// }
// addVertex(vertex){
// if(!this.adjacencyList[vertex]) this.adjacencyList[vertex] = [];
// }
// addEdge(v1,v2){
// this.adjacencyList[v1].push(v2);
// this.adjacencyList[v2].push(v1);
// }
// removeEdge(vertex1,vertex2){
// this.adjacencyList[vertex1] = this.adjacencyList[vertex1].filter(
// v => v !== vertex2
// );
// this.adjacencyList[vertex2] = this.adjacencyList[vertex2].filter(
// v => v !== vertex1
// );
// }
// removeVertex(vertex){
// while(this.adjacencyList[vertex].length){ //iterating
// const adjacentVertex = this.adjacencyList[vertex].pop(); //declare adjacentVertex, remove all the ele of arr of obj val
// this.removeEdge(vertex, adjacentVertex); //removing the edge //removing both vertex, and adjacentVertex
// }
// delete this.adjacencyList[vertex] //remove the vertex (the key)
// }
// // }
// let g = new Graph();
// g.addVertex("NY");
// g.addVertex("UTAH");
// g.addVertex("LA");
// g.addVertex("CHICAGO");
// g.addVertex("SEOUL")
// g.addEdge("NY", "CHICAGO");
// g.addEdge("CHICAGO", "LA");
// g.addEdge("LA", "UTAH");
// g.addEdge("UTAH", "SEOUL");
// g.addEdge("SEOUL", "LA");
// g.addEdge("LA", "NY");
// console.log(g)
// g.removeVertex("SEOUL")
// console.log(g)