Depth-First Search Pre-Order traversal

BinraySearchTreeDFSPreOrder.java

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    // DSF pre-order print of all values in BST
	static void printPreOrder(Node current){
		// print current node data
		System.out.println(current.data);
				
		// print left child
		if(current.left != null) printInOrder(current.left);
		
		// print right child
		if(current.right != null) printInOrder(current.right);
	}
    
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