before we introduce the traversal algorithm of binary tree, we need to introduce the concepts of binary tree and traversal method.
Two fork Tree: is a special structure of the tree, in the binary tree, each node can have a maximum of two child nodes.
The most important operation in the two-fork tree is traversal, which usually has several ways of traversing the binary tree:
Pre-sequence traversal: First access to the root node, then access to the left node, the last access to the right node
turn from: http://blog.csdn.net/road_dongliang/article/details/48134993
When using the three-mesh operator, what we often see is:
X? X:y
is the shorthand for if else
If x is true, it returns x, and if x is false, it returns Y. This is the simplest and most basic usage.
But sometimes you see this usage.
X?: Y
。 And: There is no operand between, what is the use of this?
After experimenting with several examples, guess. With: omitted the x between
Which means X? : Y is x? X:y
It's going
First, in the middle of the display; (Reference: sky100articles1790515)
Copy Code code as follows:
. ordersearchdivcss
{
Position:absolute;
z-index:100;
Display:block;
Background-color: #6ec1df;
}
Js Code
Call: The JScript file gets the function of the object through the element ID
function $ (ID)
{
return document.getElementById (ID);
}
Copy Code code as follows:
function Sc1 (divid) {
var Div = $
a binary tree linked list is used as the storage structure to complete the establishment of the two-fork tree, the operation of the total number of leaves and nodes by the sequence, sequence and order and the operations of the hierarchy traversal.
#include #include #include using namespace Std;typedef int ELEMTYPE;typedef struct BITNODE{Elemtype data;//Data domainstruct bitnode* lchild,*rchild; Left and right sub-tree domains;}bitnode,*bitree;int Create (Bitree *t){Elemtype ch;Elemtype temp;sc
With the deepening of the application of educational informationization, the campus network of ordinary education system has changed from simple physical network to Business network, multimedia teaching, distance education and other integrated services are running simultaneously in the campus network, which requires the characteristic of highly intelligent network.
Campus Network topology Map
Middle School hope that the campus network can form cam
Author: Dodo
Author: dodo [website reconstruction] translator. The original Article is here: Website.
This idea is from KESO.Today, KESO said that for a page with three columns on the left and right, such as home.donews.com, what users want to see most is the information in the middle column, and the navigation portal for the website information in the left and right columns, therefore, the column information is the most important, and the page displa
of the left subtree traversal, and then traverse 5 of the right subtree 6, first traverse 6 of the left subtree, here does not, just traverse 6 right subtree 8, and then traverse 8 of the left subtree, and 7, of course, 7 No child node, so next is 9, then 11 10 similar.Finally we get the result of the first order traversal:5 2 1 4 3 6 8 7 9 11 10So be sure to remember that the operation to access the root node occurs before traversing its left and right subtree, in the case of tree A, Access 2
CSS implementation of the left and right two columns of the width of the adaptive middle column width fixed:More time may be set left and right two columns width fixed, the middle column width adaptive, but this chapter is the opposite, the following describes how to achieve the middle column width fixed, left and right two column width adaptive, about the left a
Topic One:The function of deleting the middle node of the linked list is realized by the head node of the given list.Ideas:Basic solution: Go through the list and calculate the number of nodes in the list. Then we calculate the position of the middle node, traverse the linked list again, find the previous position of the middle node, and delete the operation. How
The mature telecom-level IP technology makes the integration of voice, data, video, mobile and other applications inevitable, and unified communication has become a development trend. Network transformation with IP technology as the core and carrying a variety of new businesses to enhance competitiveness is the development direction of fixed network operators. Due to the high degree of standardization, wide application, strong bandwidth provision ability, good scalability, mature technology, hig
The middle key of the thinkpad in debiansqueeze is enabled. recently, the middle key cannot be used. The system debiansqueeze6.0.5x64 found the xorg. cof file without xinput, and the desktop environment gnome2.3www.2cto.com # apt-getinstallgpointi...
The middle key of the thinkpad in debian squeeze is enabled. recently, the
First, pre-sequence traversalAnalysis:1, the pre-sequence traversal is around, so the use of stacks, record the top root node of the stack at the same time, the first pressure on the right sub-tree, back pressure left sub-tree, thus first traversing the left subtree.2, the top node of each pop-up is in accordance with the sequence of the pre-order traversal, so it can be recorded directly.3, note: Because the stack is pressed into the tree node, so the data type in the stack is node*.struct node
right subtree of the node and the left subtree, access the left subtree of the root node, and if the left child of Zuozi is not empty, press left child's right node and left node, access left side of subtree, if empty, Access the right tree of the root node. void Prevorder_nonr () //Pre-order traversal (non-recursive) {stackthe middle Sequence Traversal: (1) The middle sequence accesses the left subtree,
Using the relative layout, the following view settings properties Layout_alignparentbottom:true, placed at the bottom,The middle view needs to be set separatelyAndroid:layout_above= ""Android:layout_below= ""This way the middle view automatically fills in the remainder of the middle and its height attribute is invalidated.:Layout file:1 Relativelayoutxmlns:androi
PHP output Two numbers in the middle of how many palindrome number method
This article mainly introduces the PHP output two numbers in the middle of how many palindrome number of methods, the case analysis of the concept of palindrome number and related judgment skills, the need for friends can refer to the next
This example describes how many palindrome numbers are in the
The left and right sides of the CSS three-column layout are fixed, the middle element is adaptive, And the css three columns areI recently learned several ways to adjust the left-right fixed width and the right-left adaptive three-column layout. I 've sorted it out and shared it with you here, I hope you can provide guidance on any of these shortcomings.First, I think of float-floating layout.
Use float to render the left and right elements, let them
The miscellaneous has previously written a demo about only taking images in a specific area, but it is relatively simple. It is not very rigorous in the conversion of the subject, and the effect of the dark center around the preview interface is not completed, I am sorry, but I have completed this today.
Before proceeding to the code, we should first explain that there are two conversion modes. First, it is converted based on the rectangular area on the screen. For example, a rectangle in the
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