Heap in C language and its implementation process

I. The concept and structure of heap If there is a set of key codes K = k0, k1, k2,... kn-1} stores all its elements in a one-dimensional array in the order of a complete binary tree, and satisfies: Ki <= K2i+1 and Ki <= K2i+2 (Ki >= K2i+ ...

Posted by Deanznet on Thu, 22 Aug 2019 05:32:37 -0700

Win32 Subwindow and Its Creation Application

Introduction: The so-called child window is a window in a parent window, which is also called the main window. Sub-window is also a window, it has its own callback function, its own window class, its own creation. It is located in an area of the main ...

Posted by gavinbsocom on Thu, 22 Aug 2019 03:06:26 -0700

kafka introductory learning @ the use of KafkaListener

1. @KafkaListener message listening springboot Kafka uses the @KafkaListener annotation to listen for consumer messages. Message listening can be divided into two types: single data consumption and batch consumption. The difference is the number of ...

Posted by justin.nethers on Thu, 22 Aug 2019 02:03:31 -0700

Flutter Learning Notes (21) --TextField Text Box Component and Card Card Component

If you need to reproduce it, please indicate the source: Flutter Learning Notes (21) --TextField Text Box Component and Card Card Component Today, let's learn about the TextField text box and Card card components. As long as the application is interactive, almost all applications will have username, password input box, search box and so on. W ...

Posted by HairyScotsman on Wed, 21 Aug 2019 10:43:12 -0700

Continuation of ndarray Notes on Machine Learning

Index and Slice of Array Index of multidimensional arrays 1 import numpy as np 2 arr=np.arange(1,25).reshape(2,3,4) 3 arr 4 # output array([[[ 1, 2, 3, 4], 5 [ 5, 6, 7, 8], 6 [ 9, 10, 11, 12]], 7 8 [[13, 14, 15, 16], 9 [17, 18, 19, 20], 10 [21, 22 ...

Posted by mmoussa on Tue, 20 Aug 2019 06:54:43 -0700

Knapsack Series Problems

I. 01 knapsack problem Concept: Every item can be taken only once Solution: See if the last item can go into the backpackMaximum type problem n items, known the weight of each item, backpack can bear the weight w, to find the maximum weight can be lo ...

Posted by weevil on Tue, 20 Aug 2019 02:12:11 -0700

FTL Basic Grammar

FTL Basic Grammar 1. Character output 2. Date Output 3. Digital Output (Take Digital 20 as an Example) 4. Declarative variables 5. COMPARISON OPERATOR 6. Arithmetic Operators 7. Logical Operators 8. Operator priorities in FreeMarker are as follows ...

Posted by jerr0 on Tue, 20 Aug 2019 01:08:37 -0700

Python Command Line Travel - Deep into argparse

Author: Hello GitHub-Prodesire Hello GitHub's "Explaining Open Source Projects" series, project address: https://github.com/HelloGitHu... Preface In the first article "A Preliminary Exploration of argparse", we have a preliminary grasp of the use of argparse's tetralogy, which has a basic sense of body.But what types of par ...

Posted by aaaaCHoooo on Tue, 20 Aug 2019 01:08:04 -0700

HDU 6681 Dendritic Array Euler Formula

To give a rectangular pin, a k-knife, each of which is a ray with non-coincident vertices and parallel axes in the cake, ask to cut the pin into several pieces. Euler's formula: V_E+F=2V-E+F=2V_E+F=2 points_edges+polygons=2 points-edges+polygons=2 po ...

Posted by deffe on Mon, 19 Aug 2019 20:04:20 -0700

Java implements maximum (small) heap and heap sorting, TopN problems

Java implements maximum (small) heap and heap sorting, TopN problems Articles Catalogue Java implements maximum (small) heap and heap sorting, TopN problems Java implementation heap Reactor Construction Insertion of heap Heap deletion Specific ...

Posted by perezf on Mon, 19 Aug 2019 05:00:41 -0700