python mooc

values can cause changes in block 2hash values .... In turn ... (To change all chunks.) ）5. Build Your own BlockchainPart:(i). Implement a chain-type structure(b). Implement a simple HTTP server, externally exposed read-write interfaceSteps:Step1: Creating a block (development environment: Goland)A. Create a project DemochainDemichain/block.goB. Create a block fileC. Creating block structures and functionsStructure:Calculate hash valueGenerate new BlocksFounding blocksStep2: Create BlockchainVi

ordering.3. Merge sortIdea: Divide the whole sequence into multiple sub-sequences, sequence the subsequence sequentially, and finally merge into an ordered sequence, with the following algorithm:/** * Merge sort, time complexity O (NLOGN) * @param arr array to sort * @param the starting position of the lo to sort interval * @param hi to the end of the sort interval */public static void MergeSort ( Int[] arr, int lo, int hi) {//If there is only one element left in the interval, the recursive if

discovers that the X process is waiting for this I/O (at which point X has become blocked), and the handler sets X to Wake_up 6. process Management may set process X to the next process so that the get system invokes the data and returns to the user-state stack 7. from the point of view of the CPU execution instructions: 8. from a memory point of view, all physical addresses are mapped to more than 3G of address space. Because this part is shared for all processes: The experimental

node service (preferred to go to the school folder below.) Input command node Index.js)Show Results:School is also exposed to the outside. The5. The node. JS API usesnode. JS Core module: http/url/querystring module"1". URL URLs parsingVideo: https://www.imooc.com/video/6710URL Document directory: https://nodejs.org/dist/latest-v8.x/docs/api/url.html"2" QueryString parameter Processing tool (serialization/deserialization/escape/reversal semantics)https://www.imooc.com/video/6711//Video addressh

());a_2 = Beishu * R.geta ();b_2 = Beishu * R.GETB ();}return new fraction (a_1 + a_2, b_1);}Public fraction multiply (fraction r) {//multiplies its score and R's fraction to produce a new fraction object.return new Fraction (A_ * (R.geta ()), B_ * (R.GETB ()));}public void print () {//outputs itself as a "numerator/denominator" to the standard output with a carriage return with a newline. If the score is 1/1, you should output 1. When the numerator is greater than the denominator, there is no

Import Java.util.Scanner;public class Report {public static void Main (string[] args) {String[] s={"faint signals, barely perceptible","Very Weak signals","Weak signals","Fair signals","Fairly good signals","Good signals","Moderately strong signals","Strong signals","Extremely strong signals"};String[] r={"unreadable","Barely readable, occasional words distinguishable","Readable with considerable difficulty","Readable with practically no difficulty","Perfectly readable"};String rs= "";int i;Scan

TOP1: Academy Onlinehttp://www.xuetangx.com/TOP2: NetEase Cloud Classroomhttp://study.163.com/Top3:courserahttps://www.coursera.org/Top4:edxhttps://www.edx.org"C Language Program Design" by Zhejiang University: Link: http://pan.baidu.com/s/1o63Hs2e

Definition of supervised learning and unsupervised learning Idea of supervised learning is to teach computer how to do something. Idea of unsupervised learning is to let the computer learn by itself. Reinforcement Learning: Reinforcement Learning

1, MyStringRequired Input: ABC def 123 456 Require output ABC,ABC,ABC def,def,def 123,123,123 456,456,456 #include #include #include using namespace std; Class MyString {char * p; public:mystring (const char * s) {if (s) {p = new Char[strlen (s)

To achieve the QQ new account application and the old account landing simplified version of the function. The biggest challenge is: it is said that the current QQ number has 10 digits. Input format: The input first gives a positive integer nn (\le 10

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Simple integer Partitioning problem total time limit: 100ms memory limit: 65536kB description A positive integer n is represented as a sum of a series of positive integers, n=n1+n2+...+nk, where n1>=n2>=...>=nk>=1, K>=1.This representation of

Monday,9 months a day This day is the week of the past week summary, I find out what the day.This morning to computer tossing machine, the morning basically did not study, rest a morning.In the afternoon to write a summary last week, finished doing MOOC Reptile class Homework, "Think Python"Archimedes spiral function after class. Arrange this week's course at night.Tuesday,9 month This day did not wri

PYTHON blog record 0602, python blog 0602The following content is from the unicodestring in MOOC http://www.imooc.com/learn/177 python. There is another encoding problem in the string. Because the computer can only process numbers, if you want to process text, you must convert the text into numbers before processing.

Write Python,python, write Python programming, write Python programming, and write in Python for international students.I and write the team members are graduated from the domestic and overseas computer professional well-known institutions , are now employed in the domestic

Baptism soul, practice python (2) -- python installation and configuration, python -- python Install python and basic configurations: Python Official Website: www.python.org Open the website and download the corresponding version

Summary of Python Installation Problems and python Problems Today is the first time I came into contact with the Python tool. I wrote a video on MOOC and installed and used it. The instructor on the video did not elaborate on how to install and use Python, but briefly intr

Python learning notes-python program running, python-python I am a beginner in python and write down some of my ideas. Please ignore it. Install the python editor and configure the environment (see install and configure

. Net programmer Python path --- Python basics, python --- python Recently, I am curious about dynamic languages. So I chose the Python language. 　　I. Python basics: 1. print outputs data to P