Top new questions this week:

Simple math quiz in C#

I am only a beginner when it comes to programming, but after reading tons of tutorials on and offline, I have been able to create this simple math quiz. It does work as intended, and I'm really just ...

c# beginner quiz

asked by Clol7 11 votes answered by asibahi 12 votes

List of all possible monetary totals from a set of cash

This code prints out a list of all the possible sums that can be made from a set of cash. For example, say you have 2 fives and 2 tens in your wallet. With these, you can make exact change for $0, ...

python beginner python-3.x

asked by Vermillion 8 votes answered by Gareth Rees 7 votes

3n + 1 programming challenge in Python

I am trying to find a efficient solution for the 3n + 1 problem on uvaonlinejudge. The code I have uses memoization using a dictionary. I am getting a 'Time limit Exceeded' error when I submit the ...

python programming-challenge time-limit-exceeded collatz-sequence

asked by Omar Khan 7 votes answered by Graipher 6 votes

Inserting a DBNull value into a database

I have code which works pretty well. I just need some of your opinions on how to write it better with fewer line of code. I want to use a ternary operator but I couldn't make it work so I did an if ...

c# database null

asked by Dikong Prigm 7 votes answered by t3chb0t 6 votes

Search in a JSON structure after a key

This code is supposed to search for a specific key in a object or an array or a mix between both. Is there anything I can improve? function getAllObjectsIn(key, data, casesensitive){ var ...

javascript oop array search

asked by Kastel 6 votes answered by Mike Brant 4 votes

mini-(Docker)-shell

I was given an assignment to write a mini-shell: To write your own shell, you will need to start with a C program that will prompt the user for input and accept in a number of arguments from a ...

c homework linux shell namespaces

asked by syb0rg 6 votes answered by vnp 2 votes

Python! (Snake)

This is now an Iterative Review. Next Iteration Nowhere near a full game yet. Just a basic overview and initialisation of a Snake() class. Thoughts? Snake.py import numpy ''' Game Board: ...

python beginner python-3.x numpy snake-game

asked by Kaz 6 votes answered by Thomas Ward 7 votes

Greatest hits from previous weeks:

Determining triangle type from three integer inputs

The logic is simple, but I was wondering if anyone could help with rewriting the conditional logic. Also, the only error conditions I can think of are the sides should not be equal to or less than ...

java

asked by Phoenix 6 votes answered by codesparkle 5 votes

Generating all combinations of an array

I'm generating all combinations of an array, so for instance, ["a", "b", "c", "d"] will generate: [ "a", "b", "ab", "c", "ac", "bc", "abc", "d", "ad", "bd", "abd", "cd", ...

javascript combinatorics

asked by Incognito 37 votes answered by Wayne Burkett 31 votes

Can you answer these?

React Image component that loads and blurs an image onto a canvas

My react.js Image component will load an image from a URL or base64 string, do some processing on it and put it on a canvas. The "preload" prop is a 10x10 pixel image that is blurred just a little bit ...

javascript performance image canvas react.js

asked by Sebastian Olsen 2 votes

Glossary Lookup Function

I'm looking to identify any weak points and unnecessarily slow/expensive operations to optimize this function: https://jsfiddle.net/vkoc22kh/24/ Any help is much appreciated!!! Thank you!!! ...

javascript performance jquery

asked by j-man86 2 votes

Simple factory pattern for cooking a pizza

I have developed a command line application which prompts the user to initially select an oven and then requests that they cook a pizza. The oven affects the pizzas cooking time. The pizzas ...

php factory-method

asked by ExohJosh 3 votes