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mac algorithm - php implements java's mac hmac_sha1 encryption algorithm

Please tell me how to implement Java's encryption algorithm hmac_sha1 in PHP?

迷茫 2017-05-16 13:13:28 0  1  697

javascript - Please explain the following algorithm code

It’s about the code of this algorithm, implemented in javascript, but I don’t understand the algorithm below. Ask God to explain. {code...}

習(xí)慣沉默 2017-07-05 10:41:45 0  1  1066

Signature verification - How to perform SHA512withRSA algorithm signature in PHP?

After searching, I only found [SHA1withRSA][1] algorithm signature, but not SHA512withRSA.

怪我咯 2017-05-16 13:05:17 0  1  1199

web - nginx location search algorithm problem! ?

First post my server configuration: {code...} The official location search path priority and algorithm are described as follows: To find location matching a given request, nginx first checks locations defined using the prefix strings (prefix lo.. .

黃舟 2017-05-16 17:27:37 0  1  1149

Java - Looking for an explanation of the following algorithm

It is known that the linear table A of length n adopts a sequential storage structure. Please write an algorithm with a time complexity of O(n) and a space complexity of O(1). This algorithm deletes all data elements whose value is item in the linear table. . {Code...} cannot run after rewriting. He...

扔個三星炸死你 2017-07-05 10:26:05 0  2  1209

Data Mining - How to use python to implement the algorithm in "Analysis of the Influence Maximization Problem of Multiple Social Networks"?

As a python novice, my instructor asked me to use python to implement the algorithm in the paper. I was confused about the technical points required and how to implement the algorithm. Currently, I have finished the Python tutorial by Teacher Liao and am currently reading the networkx documentation....

PHP中文網(wǎng) 2017-05-18 10:58:59 0  1  904

javascript - An algorithm question in front-end interview

Today, I have an interview in the afternoon. During the second interview, there was an algorithm question. I know nothing about algorithms. Please ask someone to help me. The question is to implement a function that calculates addition, subtraction, multiplication and division of parentheses. The in...

給我你的懷抱 2017-05-19 10:27:19 0  11  1657

A Java mac check domain algorithm. Can any expert help rewrite it into a PHP version?

A Java mac check domain algorithm. Can any expert help rewrite it into a PHP version? Message format: Domain 0 | Domain 1 | Domain 2 | ... | Domain n Domain n is the MAC verification domain {code...}

淡淡煙草味 2017-06-26 10:49:17 0  1  904

Use the BFS algorithm to explore the graph and output the shortest path

The goal of the program is to pass through various airports and output the shortest path between PHX and BKK using a breadth-first search algorithm. However, I'm having trouble printing the results. The expected output (shortest path) is: PHX->LAX->MEX->BKKconstairports='PHXBKKOKCJFKLAXMEXE...

P粉633075725 2023-09-03 11:42:48 0  2  768

Algorithm - How to implement QQ multi-person chat avatar in Java

As shown in the figure 1: Please note that pictures cannot be superimposed on each other 2: It is best to use a universal algorithm. It is best not to hard-code the x and y positions 3: It is best to be universal for N pictures. I tried drawing curves to intercept but failed. The amount of calculati...

高洛峰 2017-05-17 09:57:55 0  1  647

php search algorithm

One file has 300,000 pieces of data! One data per line, same word! For example, post stop tops is a peer word. How can you find out all the data in it? Please give me some ideas.

phpcn_u1582 2017-05-16 13:02:53 0  3  521

objective-c - ios obtains the RGB color in the photo, uses an algorithm to delineate the graphics that need to be taken out, and generates a new photo;

After the user takes a photo, the app detects the RGB on the photo and pulls out the required blocks; then uses the RGB correction algorithm to fill in the color of the picture; the specific requirement is that after a photo is taken, it first detects the color cast and uses RGB Convert to Lab. Then...

迷茫 2017-05-02 09:29:03 0  3  1009

Which built-in file is getExtention() in? Why can't I use it?

Which built-in file is getExtention() in? Why can’t I use it? initial;">hash_file(): Unknown hashing algorithm: getExtention Unknown hashing algorithm

whxn 2020-01-03 10:53:47 0  1  1226

Calculate the time complexity and space complexity of a program

Can you explain how to calculate the time complexity and space complexity of a program based on a specific algorithm (such as a sorting algorithm)?

Dream（☆_☆） 2019-10-17 22:02:47 0  2  1262

php - probabilistic algorithm sorting

How to sort data according to probability so that each probability interval has a result? For example, suppose there is a set of data as follows {code...} key is the value to be sorted, and value is the probability of each value appearing at that position in the array. For example, a, the probabilit...

過去多啦不再A夢 2017-05-24 11:33:58 0  2  889

javascript - programming, algorithm problems

I had a question in the interview the day before yesterday. Please use js, python, java, c, c++ and other languages ??to calculate 10 billion data in 10 seconds, and (can only be completed in 3 seconds). The format of even numbers before odd numbers is as follows 1 , 2, 3, 4, 5 output results are 2,...

PHP中文網(wǎng) 2017-06-12 09:25:56 0  4  1052

javascript - python small algorithm

There is a list of date strings, as follows: {code...} Find which date string in lst is most similar to s = ['2017-06-09'] Idea 1: Convert the values ????of s and lst into dates and traverse Compare the difference in seconds, and the smallest one is the date string you are looking for. Is there a be...

曾經(jīng)蠟筆沒有小新 2017-06-15 09:21:43 0  3  1252

javascript - Recursive algorithm problem.

If your boss gives you one yuan on the first day, he will give you double the amount of the previous day every day. That is 1, 2, 4, 8.... . Now, after 30 days, how much money have you received in total? Requirements: Use recursive functions to implement

我想大聲告訴你 2017-07-07 10:35:05 0  5  1486

c - Inertial navigation algorithm

Have you ever come across inertial navigation? Is there any information you can refer to?

巴扎黑 2017-05-02 09:33:10 0  0  680

How to use password_hash algorithm

I have been studying the use of password_hash to process passwords into the database these days, but I don’t know how to use it to process passwords entering the database. MD5 can be executed directly on the database statement: $query = "INSERT INTO member(urs_name,password,rt_time) VALUES ( '{...

鏡花水月 2017-09-21 16:22:32 0  1  1225