fixed init nodes
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@ -3,7 +3,7 @@ package graph;
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import java.util.ArrayList;
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import java.util.ArrayList;
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public class Graph {
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public class Graph {
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private ArrayList<Node> nodes;
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private ArrayList<Node> nodes = new ArrayList<>();
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public ArrayList<Node> getNodes() {
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public ArrayList<Node> getNodes() {
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return nodes;
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return nodes;
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