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@ -1,18 +1,48 @@
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package com.pahimar.ee3.emc.graph;
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import java.util.ArrayList;
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import java.util.Comparator;
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import java.util.HashMap;
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import java.util.Iterator;
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import java.util.List;
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import java.util.Map;
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import java.util.NoSuchElementException;
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import java.util.SortedSet;
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import java.util.TreeSet;
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public class WeightedDirectedGraph<T, E> implements Iterable<T> {
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private final Map<T, SortedSet<E>> graph = new HashMap<T, SortedSet<E>>();
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private List<T> orderedNodes = new ArrayList<T>();
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public boolean addNode(T node)
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{
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// Ignore nodes already added
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if (graph.containsKey(node)) {
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return false;
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}
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orderedNodes.add(node);
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graph.put(node, new TreeSet<E>(new Comparator<E>()
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{
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public int compare(E o1, E o2) {
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return orderedNodes.indexOf(o1)-orderedNodes.indexOf(o2);
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}
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}));
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return true;
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}
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public void addEdge(T from, T to)
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{
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if (!(graph.containsKey(from) && graph.containsKey(to)))
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{
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throw new NoSuchElementException("Missing nodes from graph");
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}
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//graph.get(from).add((E) to);
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}
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@Override
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public Iterator<T> iterator() {
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