if I have a string AYUKB17053UI903TBC. I want a function to return ABKUY01357IU039BCT. So every alphabetical part of the string is sorted, as well as the numerical part. But they retain their original orders in the string...
We can assume that the input only contains number and English letters
...
I've came up with the following implementation of a very simple cache:
use std::cmp::Eq;
use std::collections::HashMap;
use std::hash::Hash;
pub struct Cache<I, R, F>
where I: Copy + Eq + Hash, F: Fn(I) -> R
{
calculation: F,
values: HashMap<I, R>,
}
impl<I, R, F> Cache<I, R, F> wh...So I am new to Databases.Recently I was asked this question in an interview where they expected me to come with a schema for storing and retrieving categories for an E-commerce website in an RDBMS. Each category could have many sub-categories. But each sub-category could have just one parent cate...
I tried to Transfer/get videos to Fembed.com via API but got error.
Please take a look and tell me where is the mistake/modifications should be done?
I tried to contact Fembed, they send me a sample API PHP File : https://pastebin.com/6mc5JaWu
$data = array(
'data' => 'FILE_ID'
);
$links =...
What is the best way to refactoring code and best performance Here Is what I do In getData function I query get Data from databae using async/await
then I got some ugly data I try to map and delete element that duplicate data
async getData({req,res}) {
let data = await this.getData()
...
I created this code for deforming SVG files
html
<div id="svg_opt"></div>
<div class="frame_1">
<svg width="580" height="400" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 621.69 605.5"><defs><style>.patch1{fill:#ff0;stroke:#000;stroke-miterlimit:10;}</style></defs><title>1</title>
<path...
i have some bug for 2048 game this is my method move right
public static void right(int[][] mat) {
for (int j = 3; j > 0; j--) {
for (int i = 0; i < 4; i++) {
while ((mat[i][j] == 0) && (mat[i][j - 1] != 0)) {
mat[i][j] = mat[i][j - 1];
ma...
I'm completed the Reddit challenge #380 (source). I done the best I can but wanted a few insights to what I could do that would be better.
Code
The code is the solution to the Reddit challenge. In the main method, the class is initialised then prints each of the solutions out. Please note that...
How can I make a generator or simplify this loop? I am looping through pdf files, appending list type data into dataframe then exporting to excel for end user to easily search info. Below is method breakdown of this script:
Find duplicate files from selenium webdriver download
Delete duplicate ...
I made the following regular expression for parsing ngnix log
log_1 = "1.169.137.128 - - [29/jun/2017:07:10:50 +0300] "GET /api/v2/banner/1717161 http/1.1" 200 2116 "-" "Slotovod" "-" "1498709450-2118016444-4709-10027411" "712e90144abee9" 0.199"
My test cases (https://regex101.com/r/Eyhxod/1)...
In order to learn about multithreading programming in C++ I am implementing a basic multithreaded logger.
I use a std::deque to store messages inside a FileLogger class. Each time a thread logs a message; that message is pushed to the back of the deque.
In a separate thread the FileLogger check...
I have an array of values. (cols)
I want to find out which index of cols contains the value closest to the mean of cols.
Can I combine these functions so that I'm not repeating loops?
let mean = cols.reduce((prev, curr) => prev + curr) / cols.length;
let closest = cols.reduce((prev, curr) => (...
Code explained
I wrote a few identical functions for each table to filter them with the use of input fields in jQuery. My code is a bit flawed because I have one function for each selector or class, which is messy and can definitely be improved but after countless hours of investigating I'm exha...
So, after this functional(?) approach and thanks to the great improvement of @CDP1802, I've decided to try an OOP approach to filtering an two-dimensional array.
In my opinion, the result is way more elegant and has also performance improvements.
Now the user is able to choose the order of the ...
I have the following code: It works completely as expected, but I feel there is a better way to refactor it out.
public async Task<IEnumerable<Invoice>> GetAllInvoicesAsync()
{
const string endPoint = @"foo/{0}/invoices?pageNum={1}&itemsPerPage={2}";
const int itemsPerPage = xxx;
In...
I am relatively new to Code Review, so I don't know if this Stack Exchange site suffers particularly from negative interaction by arrogant and bullying seniors but I'm certainly seeing it with the last question I asked.
I asked a question, 3 days ago, about how best to structure PHP arrays:
Wha...
I have code which takes a text file as input and creates a special binary output form of the input. Specifically, the test input I'm using is the plain text of Samuel Coleridge's poem "Kubla Khan".
Processing
Each line of the text is turned into a counted string (also sometimes called a "Pas...
Problem Statement
I'm reading each line from a .csv file and parsing each comma-delimited value and casting it to the appropriate type:
string[] words = filelines[i].Split(delimiter); // "i" is the 0-based line number
// Remove double quotes encasing the timestamp
DateTime tmStamp = Convert.T...
My code is written down bellow and I have attached to files that show the psuedocode. If someone could compare my code to the psuedocode that would be great. It's not sorting correctly, but its compiling, so im assuming something is off. Im just trying to write a basic QuickSort code.
My code
...
I am implementing recursive backtracking algorithm for sudoku. Below is the code to create board with random filling. I wonder if I can make it better in any terms of readable coding especially validation methods. in Board class.
public class Board {
private int[][] board;
public final static i...
I wanted to make a library thing which provides specific extensions for collections/collection-like containers in kotlin:
fun <T> Collection<T>.extendEntries(length: Int) = this.flatMap { x -> List(length) { x } }
fun String.extendEntries(length: Int) = this.toList().extendEntries(length)
fun <T>...
I have a table in Hadoop that looks like this (with up to hundreds of columns and millions of rows):
+--------+-----------+--------+-----+
| field0 | field1 | field2 | ... |
+--------+-----------+--------+-----+
| 0.66 | 0.4364153 | 0.31 | |
| 0.28 | 0.281724 | -1 | |
| 0.4...
My goal is to scrap the suggestion no. 1 of the suggestion list on https://finance.yahoo.com for any entry. If there is no suggestion the code should write f"nan_{what_ever_the_entry_was}".
As basis I used the solution from https://stackoverflow.com/questions/50355120/how-to-scrape-the-yahoo-fin...
