I've recently gotten into discrete math and graphs. I'm trying to implement a few functions related to graphs and I'm not sure if I'm covering every test case that could possibly be thrown at my program.
Input constraints:
Graph is connected
Graph is undirected
Graph is unweighted
Graph has ...
[This is my first question to Code Review and it might be a bit too much.]
I want to give users the means to draw a simple diagram in the browser, and because it is partly a self-education project about the low-level entities and relationships in the browser, I haven't used one of the bigger f...
I wrote a function which takes a byte and shifts the bits around. That is, there shall be the same number of 1 bits and 0 bits in the output but the bits will be shifted in position:
global _main
default rel
section .text
_main:
; Given 1 byte, shift the positions of the bits in the form 7...
I have a list like this:
seq = [-2,3-2,3,5,3,7,1,4,-5,1,4,-5,1,4,-5]
I want to get all the sequential recurrences and where it happens, I feel the way I'm doing its too brute force and in reality I want this for several lists of len 300ish
dic = {}
for p1 in range(len(seq)):
for p2 in ran...
Preface: I am learning Rust through the Advent of Code
The task is to read lines from a file, parse each as an integer, then provide a summation of all the numbers. My solution looks like this:
use std::fs::File;
use std::io::{self, prelude::*, BufReader};
fn main() -> io::Result<()> {
let...
I am creating routes from an array of menuItems. I have written a recursive function, which works fine but I think the code can be improved. So, I need you guys to review my code and suggest me some changes.
Here is the code:
const accumulator = [];
const renderRoutes = (_menuItems) => {
_men...
I am trying to make an IOS tool similar to Android's ValueAnimator... more or less
This is useful for situations where you simply want a value to "animate" over time, but rather than necessarily attaching that value to some view property, it is available to use as you wish. Imagine applying it ...
I noticed this suggest edit:
This suggested edit does two things:
Replace using namespace std;, which is considered bad practice in C++, with std::.
Fix a divide-by-zero bug by special-casing zero.
This edit was rejected by πάντα ῥεῖ, and then approved by Mathieu Guindon ♦.
I disagree wit...
I have the following query:
SELECT * FROM "topic"
WHERE "is_deleted" = 0
AND "topic_type" IN ('19','15','27','13','1','7','25','4','6','3','2','9','26','23','24','22')
AND "id" IN
(SELECT "record_id" FROM "notes"
WHERE
"record_id" IN (select "id" FROM "topic"
...
So I'm using the event emitter as some sort of an event bus(If I'm allowed to call it that).
The problem I've stumbled upon is that my listeners might want different data than another listener. Since I don't want to add too much and listener specific information where things get emitted. I'm usi...
I'm trying to develop a c++ library that provide two kind of times:
UTC time(self explainitory)
System time(time since the system has went on)
I have looked into the chrono library in cpp and im trying to implement my library, more of the same like chrono. the implementation is very complicat...
I have made a simple Timer class used for scheduling tasks. While defining the interface, I have followed the interface of a java.util.Timer class.
Class is being written by using only C++11.
timer.hpp
#include <atomic>
#include <chrono>
#include <future>
#include <utility>
template<typename ...
What is the smallest positive number that is evenly divisible by all of the numbers from 1 to 20?
Is there a more elegant solution in C++?
#include <iostream>
using namespace std;
int main(){
long long num = 1;
int divMin = 1;
int divMax = 20;
int tempDivMax = divMax;
whi...
Below is a code to update a google sheet using the database values.The script is working fine but it is rather slow because of the sleep function which i have to put because of the "Quota exceeding error" below.If i remove the sleep time it would work much faster but after a certain number of row...
My neural network is not giving the expected output after training in Python. Is there any error in the code? Is there any way to reduce the mean squared error (MSE)?
I tried to train (Run the program) the network repeatedly but it is not learning, instead it is giving the same MSE and output. ...
Say you have two strings :- exp->aaccbb comp-> aa2bb
The above example will return true as there are 2 chars between aa and bb.
I have written the code snippet. Just wondering if there is a better way do solve this problem and if I am missing any edge cases.
Follow up -> either side can have co...
I wrote this singly linked list and it worked fine,Now can anyone review my code.I want to do some more clean my delete and add function.And some abstraction.
#include<stdlib.h>
typedef struct q_9
{
int data;
struct q_9 *link;
}*node;
node head=NULL;
node tail=NULL;
node newnode(int x);...
I am trying to make it possible to run a program like this in Haskell:
factorial :: Integer -> Integer
factorial n = def $ do
result <- var 1
i <- var n
while i (>0) $ do
result *= i
i -= lit 1
return result
Below is my program. At this point, I cannot understand why ...
One operation of my Android project is to decrypt one file (chosen in a set of ~30 files for pagination1) of ~10 Mb each and I do this with the following:
fun InputStream.cipherDecryptWithSessionPwd(password: String): String {
var payloadArray: List<Byte>? = this.readBytes().toList()
var...
I have the following code for reading a json file into pandas dataframe and parsing the fields, but it is too slow for large files. Is there a way to make the code more efficient?
def extract_text(json_train_path):
with open(json_train_path, 'r') as json_file:
train = {'example_i...
I'm writing a scheme interpreter in rust, and the first step is the parser. I've finished the lexer, and would like to see what people think of it before I go any further.
#[derive(Debug, PartialEq)]
enum LexToken {
Num(f64),
Symbol(String),
String(String),
LeftBracket,
Right...
Recently I started looking and refreshing about algorithms and decided to try to do the 3 sum algorithm. I did the code below:
public static int[] tripletSum(int[] A, int sum) {
HashMap<Integer, Boolean> data = new HashMap<>();
for (int i = 0; i < A.length; i++) {
data.put(A[i...
I apologize in advance if this is the wrong place to ask for this type of help but I was wondering if anyone could make any suggestions to how I could write the following more concisely and reduce the number of IF statements? Is it at all possible to simultaneously assign values to variables and ...
![[proudly greeting the hotel manager at the door] "Did I do aa good job?"](https://imgs.xkcd.com/comics/hotel_room_party.png "[proudly greeting the hotel manager at the door] \"Did I do aa good job?\"")
Need to merge data per column if records in the first column are the same.
I wrote a VBA code and it works but it works very slow as it executes "merge" function per each row no matter if consequent cells are the same or different.
Sub DuplicateValues()
'Declare All Variables:
Dim myCell As R...
Okay so I am needing to find differences between to nested lists. I set the lists from CSV files, they look like so:
list1 = [{"UniqueID": '123', "Name": "John Smith", "Date": "11/22/2019"},
{"UniqueID": '124', "Name": "Bob Smith", "Date": "11/22/2019"},
{"UniqueID": '125', "Na...
If any help, I'm using Google Chrome Version 78.0.3904.108 (Official Build) (64-bit) on a Mac.
When I nominate a question to be reopened, the prompt window is still present after I click "Reopen". The queue moves on to the next question, but the prompt is still there. Clicking "Reopen" again sho...
Following is a take to convert non terminated char array (e.g. buffer, string_view etc) into signed or unsigned integer.
#include <limits>
#include <type_traits>
#include <string_view>
#include <utility>
namespace impl{
template<typename T>
T x10(T a){
return a * 10;
}
...
here is how i am using my location component:
<LocationContainer opts={{timeout: 5000}}>
{(address, error) => {
if (error) {
return <div>Could not determine address (why...? <span style={{color: 'red'}}>{error.message}</span>)</div>
} else if (address) {
...
I have made a class which is a thread-safe implementation supporting Deposit, Withdrawal, Check Balance Querying and Transferring of money.
I have a class Account:
public class Account {
private int balance;
private String address;
private String userId;
final ReentrantReadWriteL...
I have a simple code, but I receiving (sometimes) wrong results, it's because of NodeJS async, I know.
So to solve the issue of async for NodeJS I used the require("async") library. But now my simple code got quite complex, and i'm still receiving a wrong result sometimes.
then i figure that I...
