File, FileReader, Blob, Fromdata object

File The File interface provides information about the File and allows JavaScript in the web page to access its content. The File object can be used to obtain the information of a File and read the contents of the File. In general, the File object is the FileList object returned after the user selects a File on a < input > element, or the ...

Posted on Sun, 01 Dec 2019 00:32:50 -0500 by DarkWater

POJ 3080 Blue Jeans KMP algorithm + violence matching

Title: Given n groups of test data, each group of test data has m strings. Find out the longest common string in these strings. If there are multiple groups of the same length, the output dictionary order is the smallest. If the length of the common string is less than 3, output no significant Communications Explanation: For ...

Posted on Sat, 30 Nov 2019 22:48:47 -0500 by nickmanners

1002 write this number

Read in a positive integer n, calculate the sum of its digits, and write each digit of the sum in Chinese pinyin. Input format: Each test input contains one test case, that is, it gives the value of natural number n. It is guaranteed that n is less than 1. Output format: For each digit of the sum of the digits output in a line, there is a space ...

Posted on Sat, 30 Nov 2019 21:56:18 -0500 by pagod

There are three ways to create accounts through EOS source code analysis.

The first method is to create the system account eosio. Directly call the create native account method to create. And set the resource to infinite. void create_native_account( account_name name, const authority& owner, const authority& active, bool is_privileged = false ) { //create account directly creates an account without any ...

Posted on Sat, 30 Nov 2019 21:25:14 -0500 by sasito

[P2402] cow hiding

Binary answer + maximum flow. If the length of the answer is less than or equal to the answer, it can be connected with the edge. (the shortest circuit between pre-treatment points) Of course, we have to break it down. (otherwise, for this problem, there will be a situation that the traffic x-y does not walk on the shortest side of the x-y Road ...

Posted on Sat, 30 Nov 2019 20:37:51 -0500 by mchaggis

A general explanation of Java

Why use generics? 1. Solve the security problem of element storage. 2. Solve the problem of strong type conversion when obtaining data elements. Where to use generics? 1. Comparison between using generics in sets and not using generics import java.util.*; public class TestGenericParadigm { public static void main(St ...

Posted on Sat, 30 Nov 2019 20:11:24 -0500 by robot_nader

New features of Java 8 lambda expression

A functional interface is an interface that explicitly declares only one abstract method. To ensure that the number of methods is small, java8 provides a special annotation @ functional interface, so that when there is more or less than one abstract method declared in the interface, an error will be reported. As shown in the ...

Posted on Sat, 30 Nov 2019 18:52:35 -0500 by lando

PAT A1033 key questions

This problem is a relatively difficult problem in greedy algorithm. The key is that it is difficult to summarize the specific steps. Here, the steps given in the following examples are explained in detail: First, the gas stations are arranged in distance order;The example divides the selection of the next node within the reachable range into t ...

Posted on Sat, 30 Nov 2019 18:20:48 -0500 by refined

Convert from BitArray to Byte

I have an eight BitArray , I need a function to convert it to a byte. How do you do it? Specifically, I need a correct ConvertToByte function: BitArray bit = new BitArray(new bool[] { false, false, false, false, false, false, false, true }); //How to write ConvertToByte byte myByte = ConvertToByte(bit); var recoveredBit = new Bit ...

Posted on Sat, 30 Nov 2019 18:12:22 -0500 by zc1

Several sort implementations for data structure - Quick sort, Bubble sort, Insert sort directly, Select sort directly, Heap sort

1. Insert Sort Directly Select one value to be sorted at a time to insert into the existing sorting sequence; (4,2,6,5,1,8) For an example of incremental ordering: key=2; less than 4, 4 move right, 2 insert 4, 246518 key=6; position fixed, 246518 key=5; 6 moved backward, 5 inserted; 245618 .... Repeat the above steps unt ...

Posted on Sat, 30 Nov 2019 16:20:09 -0500 by motofzr1000