[Solved]Java Need Following Code Modified Duplicates Cannot Inserted Runs Red Black Binary Search Q37187226
In java, I need the following code to be modified so thatduplicates cannot be inserted and it runs as a red-black binarysearch tree
package application;
import java.util.LinkedList;
import java.util.Queue;
import java.util.Vector;
import javafx.geometry.Point2D;
import javafx.scene.canvas.Canvas;
import javafx.scene.canvas.GraphicsContext;
import javafx.scene.paint.Color;
public class Tree {
private Node root; // the root node of the tree
/******************************* Implementation Here:*****************************************/
/*
* The function below is to insert a new node to thetree. You need to modify it by imposing “Red-Black”constraints
* If a node is successfully inserted, it returns”true”
* If the node to be inserted has the value alreadyexist in the tree, it should not be inserted and return “false”. Soyou need to modify the code to forbid
* nodes with repeating values to be inserted.
*/
public boolean insertNode(Node node) {
//Here is just an example ofsetting colors for a node. So far, it is in green color. But youneed to modify the code to dynamically adjust the color to
//either RED or BLACK according tothe red-black logic
node.setColor(Node.RED);
// if the root exists
if (root == null) {
root = node; //let the root point to the current node
} else {
Nodecurrent_node = root;
while(current_node != null) {
int value = current_node.getValue();
if (node.getValue() < value) // go to theleft sub-tree
{
if (current_node.getLeft() !=null) // if the left node is
// not empty
{
current_node = current_node.getLeft();
} else // put node as theleft child of current_node
{
current_node.setLeft(node);
current_node = null;
}
} else // go to the right
{
if (current_node.getRight()!= null) // if the right node is
// notempty
{
current_node = current_node.getRight();
} else // put node as theright child of current_node
{
current_node.setRight(node);
current_node = null;
}
}
}
}
return true;
}
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