trees in java
package MyPackage;
public class Tree {
static class Node {
int value;
Node left, right;
Node(int value){
this.value = value;
left = null;
right = null;
}
}
public void insert(Node node, int value) {
if (value < node.value) { if (node.left != null) { insert(node.left, value); } else { System.out.println(" Inserted " + value + " to left of " + node.value); node.left = new Node(value); } } else if (value > node.value) {
if (node.right != null) {
insert(node.right, value);
} else {
System.out.println(" Inserted " + value + " to right of "
+ node.value);
node.right = new Node(value);
}
}
}
public void traverseInOrder(Node node) {
if (node != null) {
traverseInOrder(node.left);
System.out.print(" " + node.value);
traverseInOrder(node.right);
}
}
public static void main(String args[])
{
Tree tree = new Tree();
Node root = new Node(5);
System.out.println("Binary Tree Example");
System.out.println("Building tree with root value " + root.value);
tree.insert(root, 2);
tree.insert(root, 4);
tree.insert(root, 8);
tree.insert(root, 6);
tree.insert(root, 7);
tree.insert(root, 3);
tree.insert(root, 9);
System.out.println("Traversing tree in order");
tree.traverseLevelOrder();
}
}