public Node canReach(int key) { if (mChildren == null) { return null; } for (Node child : mChildren) { if (child.containsKey(key)) { return child; } } return null; } }
public Node canReach(int key) { if (mChildren == null) { return null; } for (Node child : mChildren) { if (child.containsKey(key)) { return child; } } return null; } }