I'm trying to write a program that stores usernames and passwords. So I have created a Record class. Each record has an id, title, username, and password field. I want to write each record to a text file.
However, I am having some issues. When I compile I get the following errors.
'Record::get...
I created a command-line program that generates poker hands (5-52 cards) and compares their strength. On my Macbook Pro, it generates and compares 1m 5-card hands in ~2m.
Here's my code:
import copy
import distutils.core
from enum import Enum
from time import time
from random import shuffle
fro...
Lots of Prim's algorithm implementations seem long, and rely on a priority queue implementation.
If I use an adjacency matrix I can then calculate the next item to take using functional programming in Swift.
func prims (_ matrix : [[Int]]) {
var selected = 0
var selectedSoFar = Set<Int>...
im working in graph theory and sagemath or python.
for prove that R(3,3)=6 is necessary to find a counterexample of a graph where it has neither a triangle monochromatic red nor a K_3 blue, for this case, an adjacency matrix is designed with entries 1 and -1, where the entry in the matrix is 1 ...
I got this question during my interview.
Given an integer N, output an N x N spiral matrix with integers 1 through N.
Examples: Input: 3
Output: [[1, 2, 3],
[8, 9, 4],
[7, 6, 5]]
Input: 1
output: matrix filled out as a spiral [[1]]
/*PSEUDO:
rowMin =...
While trying to discover a way to calculate the digits of Pi faster with the Leibniz formula for Pi, I noticed that, if I took two consecuent numbers in the series, and calculate their average, I would get a number incredibly closer to Pi compared to these other two numbers, and furthermore, if I...
Trying to run this code, which is a function I wrote myself:
def next_batch(batch_size):
label = [0, 1, 0, 0, 0]
X = []
Y = []
for i in range(0, batch_size):
rand = random.choice(os.listdir(mnist))
rand = mnist + rand
img = cv2.imread(str(rand), 0)
img = np.array(img)
img = i...
I'm currently reading Mastering Perl for Bioinformatics; I'm using the book for learning bioinformatics while implementing the code in C++. I came across a situation where I needed to use the minimum of three numbers, which the author did using a function call min3 which, as expected, returns the...
I have the following simple function
__device__
mirror(int index , int lB, int uB)
{
while(index < lB || index >= uB)
{
if(index < lB){index = lB + (lB-index);}
if(index >= uB){index = uB-1 -(index-uB);}
}
return index;
}
It is used for every index to make give m...
My problem is to load items with different types , then to sort it by types
and return pair results:
type to items (for the type)
wrapping to object:
data class MyProfilesWrap(val type: MeStore.ProfileType, val profiles: ArrayList<MeStore.ProfileImpl>)
so after groupBy() i trying get it...
I am beginner and still learn about programming on macro VBA excel. I need help from community to solve my problem on macro code on excel
Sub export_data()
With Application
.ScreenUpdating = False
.Calculation = xlManual 'sometimes excel calculates values before saving files
End Wit...
for the past months I have been learning plain javascript without jquery or libraries/frameworks. So now, when I develop a website, I want to write all of the JS code by myself to fully understand what is going on and to learn the language.
So far so good. I tried to implement a slideshow with a...
Meme: Java vs. JAVA
Originator: Jamal(?) (to be determined)
Cultural Height: The 2nd Monitor (as usual), but also in various comments scattered across meta.
Background: Question with the word JAVA (instead of Java) in the title or body, is often an indication that the poster is a beginner and/...
I don't mean damage caused to the socket and prongs, but only to the appliance itself.
def foo(n):
total = 0
for i in range(n):
for j in range(i):
total = total+i^2
return total
How best to modify this code to count the number of times the + operator is used during the evaluation of this function.
var
fs = require('fs'),
target = 'test',
size = 2 * 1024 ** 3,
content = Buffer.from('TEST'),
fd = fs.openSync(target,'w');
console.time('Truncate')
fs.ftruncateSync(fd,size)
console.timeEnd('Truncate')
fs.closeSync(fd)
console.log(fs.statSync(target).size)
fd = fs.openSync(target,'r+')
conso...
Problem description:
Molly wants to purchase laptops for her school. Find out how many laptops she can purchase by comparing the vendors available.
Each vendor sells the laptops in batches, with a quantity identifying how many laptops on each batch, and a cost for the whole batch.
Sample ...
Suppose I need to extract the paths of images from a markdown string.
The images look like this:
I am using a regex to extract the paths as follows:
def imagePaths(s: String): List[String] = {
val regex ="""...
I need you help with my php session class. I can not understand, the class implements adequate work with sessions. By adequate work, I understand the security and correctness of the methods.
<?php
namespace Core;
class Session
{
/**
* @var string Название сесии
*/
private $n...
The background-thread is an UDP listener. As soon as a certain type of message is received, the main thread has some work to do. My current solution works. But I'm in doubt of the implementation.
My question:
Is this a proper way to handle these "simple" situations?
Is there another simple and...
I was asked to create a Java program that will navigate through a series of mazes. I would like to know if this is the optimal way of using a DFS or is there a better way and I am doing something wrong?
Example of a Maze File:
10 10
1 1
8 8
1 1 1 1 1 1 1 1 1 1
0 0 1 0 0 0 0 0 0 0
0 0 1 0 1 1 ...
I have the following code in which I return two values in a tuple (I'm new to tuples so not sure how to use them properly) - the processed urls without pipe delimited strings and the media assets got from our digital asset handler
private static (string[], IEnumerable<DigitalAssetSearchResult>) ...
The following source code is working Quad Tree Implementation in C++11.
How can I simplify the source code but also allow the user to bring his own Point Class Implementation?
#pragma once
#include <algorithm>
#include <array>
#include <cstddef>
#include <functional>
#include <vector>
namespac...
Mainly looking for feedback on my use of smart pointers to implement a standard stack. For interview level production code I have also include a namespace and asserts to test my class, let me know if that would be appropriate for an interview. I'd like feedback on my pointer management to avoid m...
So I am a college student and I am trying to create a GUI that has a file chooser that opens the txt file in a dialog. Then the user chooses a secret code and the program decodes it using the following rules:
a) If I1and I2 are found at the corners of a rectangle then O1 and O2 are the other two...
I started coding in August 2018, and I was wondering on how I can improve as a programmer. I'm more concerned about coding conventions. Particularly, how can I improve the structure of my code, organization, comments, variables, formatting, etc. Any other feedback is welcome and appreciated as we...
I'm new to python and not very decent at programming. Please have a look at my code and provide your feedback. I have handled the boundary cases with a little difficulty. Problem - https://www.spoj.com/problems/PRIME1/
My solution - https://github.com/gutcodes/SPOJrepo/blob/master/test_Prime.py...
I don't know why this piece of code isn't working
'''This is ta code to show whether the word given as input is a palindrome or
not'''
line=input("Enter your word")
a=[]
b=[]
a.append(line)
b.append(a.reverse)
if a==b:
print "This is a palindrome"
else:
print "this is not a palindrome...
We know that P-values (within t-test context as an example..) is highly sensitive to sample size. A larger sample will yield a smaller p-value remaining everything else constant. On the other hand, Cohen´s d effect size remains the same.
I'm inspired in this code here, but I´ve changed some pa...
The code in its full glory, complete with unit tests is here: https://github.com/edemo/PDEngine/pull/277/files
(And also some discussion of the issue)
I am struggling with how the principle of separating data structures and behaviour applies here.
This would be the data structure, only with pub...
