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GeezerVison is showing github.com — JavaScript/Graphs/DepthFirstSearchIterative.js at master · TheAlgorithms/JavaScript Expand file tree/ Copy pathDepthFirstSearchIterative.jsMore file actions 57 lines (51 loc) · 1.49 KB / Copy pathDepthFirstSearchIterative.jsFile metadata and controls57 lines (51 loc) · 1.49 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 class GraphUnweightedUndirected { // Unweighted Undirected Graph class constructor() { this.connections = {} } addNode(node) { // Function to add a node to the graph (connection represented by set) this.connections[node] = new Set() } addEdge(node1, node2) { // Function to add an edge (adds the node too if they are not present in the graph) if (!(node1 in this.connections)) { this.addNode(node1) } if (!(node2 in this.connections)) { this.addNode(node2) } this.connections[node1].add(node2) this.connections[node2].add(node1) } DFSIterative(node, value) { // DFS Function to search if a node with the given value is present in the graph const stack = [node] const visited = new Set() while (stack.length > 0) { const currNode = stack.pop() // if the current node contains the value being searched for, true is returned if (currNode === value) { return true } // adding the current node to the visited set visited.add(currNode) // adding neighbours in the stack for (const neighbour of this.connections[currNode]) { if (!visited.has(neighbour)) { stack.push(neighbour) } } } return false } } export { GraphUnweightedUndirected } // Example // const graph = new GraphUnweightedUndirected() // graph.addEdge(1, 2) // graph.addEdge(2, 3) // graph.addEdge(2, 4) // graph.addEdge(3, 5) // graph.DFSIterative(5, 1) // graph.DFSIterative(5, 100) |
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