[Learning Notes - Java Collection - 9] Set - HashSet Source Analysis

brief introduction Set, the concept is a little vague. Generally speaking, collections in Java refer to container classes under the java.util package, including all classes related to Collection and Map. Generally speaking, collections refer to Collection-related classes in java collections, not Map-related classes. In a narrow sense, a Set in ...

Posted on Sat, 17 Aug 2019 03:52:47 -0700 by mannyee

LEETCODE (21-30) OF JS ALGORITHM PROBLEMS

Topics come from leetcode Merge two ordered lists Topic Description Merge the two ordered lists into a new ordered list and return. The new linked list is composed of all the nodes of a given two linked list. Example Input: 1 - > 2 - > 4, 1 - > 3 - > 4 Output: 1 - > 1 - > 2 - > 3 - > 4 - > 4 Answer This problem is no ...

Posted on Sat, 17 Aug 2019 00:29:21 -0700 by vboctor

web Front-end Getting Started to Practice: Six Ways to Fix the Bottom of CSS Pages

When we write a page, we often encounter less content on the page, footer will be stamped in the middle of the page or what? Anyway, it's not displayed at the bottom, it's ugly anyway. The next layout is how to make elements stick to the bottom of t ...

Posted on Sat, 17 Aug 2019 00:15:01 -0700 by 9AF

Android OpenGLES 2.0 - Draw a triangle

Links to the original text: https://wuwang.blog.csdn.net/article/details/52801772 Drawing triangles was chosen as the first example of OpenGL ES 2.0 because, as mentioned earlier, points, lines and triangles are the graphical basis of th ...

Posted on Fri, 16 Aug 2019 23:29:52 -0700 by bradlybrown

JavaScript Object Array

Array Array is one of the most common types in JavaScript. Any type of data can be stored in the same array, and its length is dynamic and changes automatically as the data in the array is added or subtracted.Each array has a length attribute that represents its length (the number of elements in the array).And the index (subscript) of the array ...

Posted on Fri, 16 Aug 2019 22:40:55 -0700 by udendra

Improving classification performance with AdaBoost meta-algorithm (ensemble method)

When we make a decision, we may take into account the opinions of many individuals. One person's opinions may not be reliable. Meta-algorithm (integration method) is a way to combine other algorithms. AdaBoost is a meta-algorithm. The main co ...

Posted on Fri, 16 Aug 2019 02:19:19 -0700 by djumaka

Validation introduced by SpringMVC

Data validation on the client side is not safe and effective for any application, which requires us to validate the validity of data on the server side when developing.SpringMVC has its own good support for data validation on the server side. It can validate the validity of data we submit to the server side according to our prior conventions. F ...

Posted on Wed, 14 Aug 2019 23:53:57 -0700 by PHPGuru_2700

JavaScript Data Structure--Implementation of Diagram

In computer science, a graph is an abstract model of a network structure composed of a set of vertices connected by edges.A graph G = (V, E) consists of the following elements: V: A set of vertices E: A set of edges that connect the vertices in V The following diagram shows the structure of a graph: Before describing how to implement di ...

Posted on Wed, 14 Aug 2019 22:02:42 -0700 by RobNewYork

Eight Sorts of Data Structures

1. Direct insertion sort Green is the insertion element, red is the insertion element. For each number inserted, the element to be inserted is compared in turn with the element previously inserted. If it is larger than it, it covers the position o ...

Posted on Wed, 14 Aug 2019 06:40:20 -0700 by ozace

Viewing Linux System Resources--Learning Notes

Catalog 1. vmstat command Virtual Meomory Statistics 2. dmesg command III. free Order IV. Viewing CPU Information V. uptime 6. Viewing System and Kernel Related Information List file information that process calls or opens 1. vmstat comm ...

Posted on Wed, 14 Aug 2019 03:01:36 -0700 by pixelsoul