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* fix some bugs
* delete duplicate files
* format code
This commit is contained in:
yanglbme
2019-05-09 19:32:54 +08:00
parent 163db8521a
commit 29948363da
368 changed files with 4372 additions and 30841 deletions
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58
DataStructures/Trees/LevelOrderTraversalQueue.java
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@ -1,62 +1,48 @@
package DataStructures.Trees;
import java.util.Queue;
import java.util.LinkedList;
/* Class to represent Tree node */
class Node {
int data;
Node left, right;
public Node(int item) {
data = item;
left = null;
right = null;
}
}
/* Class to print Level Order Traversal */
public class LevelOrderTraversalQueue {
/* Class to represent Tree node */
class Node {
int data;
Node left, right;
public Node(int item) {
data = item;
left = null;
right = null;
}
}
Node root;
/* Given a binary tree. Print its nodes in level order
using array for implementing queue */
void printLevelOrder()
{
void printLevelOrder() {
Queue<Node> queue = new LinkedList<Node>();
queue.add(root);
while (!queue.isEmpty())
{
while (!queue.isEmpty()) {
/* poll() removes the present head.
For more information on poll() visit
http://www.tutorialspoint.com/java/util/linkedlist_poll.htm */
Node tempNode = queue.poll();
System.out.print(tempNode.data + " ");
/*Enqueue left child */
if (tempNode.left != null) {
queue.add(tempNode.left);
}
/*Enqueue right child */
if (tempNode.right != null) {
queue.add(tempNode.right);
}
}
}
public static void main(String args[])
{
/* creating a binary tree and entering
the nodes */
LevelOrderTraversalQueue tree_level = new LevelOrderTraversalQueue();
tree_level.root = new Node(1);
tree_level.root.left = new Node(2);
tree_level.root.right = new Node(3);
tree_level.root.left.left = new Node(4);
tree_level.root.left.right = new Node(5);
System.out.println("Level order traversal of binary tree is - ");
tree_level.printLevelOrder();
}
}