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var assert = require('assert');
class Graph {
constructor() {
// fill in this method
}
addVertex(nodeVal) {
// fill in this method
}
addEdge(src, dest) {
// fill in this method
}
removeVertex(val) {
// fill in this method
}
removeEdge(src, dest) {
// fill in this method
}
printNeighbors() {
const result = [];
for (let vertex of this.adjacencyList.keys()) {
OUTPUT
Results will appear here.