I repeat here the exact title of this question on stackoverflow. I first posted an answer with not finalized code, as a simple description of the solution I could think, without any test. But later I remained interested, so I worked to make it (hopefully) perfectly functional. To precisely defi...

Please critique my code. (Specifically, I'm not sure if my use of member variables is appropriate.) Here is the main structure of my BST class: public class bst { private Node root; public class Node { int data; Node left, right; private Node(int data) { ...

I used IntelliJ for "Inspect Code", and one of its results is:   Problem synopsis      Can be package local (at line 18) What does it mean, how can I fix it?

The title says it all. This is yet another FizzBuzz implementation where you can specify the words you want to use, though it autoselects the divisors as the first n primes other than 2, rather than having you enter them. I'm looking for tips on variable/function naming and that kind of thing; I...

Below is my source code for the implementation of a Ring/Circular buffer for use in audio processing. I have been using this implementation for several months now but I have some doubts about the efficiency of the insertion and removal functions as well as the correctness/necessity of my usage of...

I'm trying to learn dynamic programming and the most popular one is to find the minimum number of coins for the change. I come up with this but I just want to improve this code which I think it could be shorter in Python but I'm new to Python too. import sys coins = [1, 3, 5] min_coin = [sys.ma...

OK, so the problem was to find which phi(n) is a permuatation of n and n/phi(n) is minimum, as we all know that means: phi(n) should be a permutation of n. n should have least number of prime factors (but not one for which phi(n)=n-1) which can never be a permutation and none of them should be ...

I was trying to write lattice gas Monte Carlo code. This is my code import numpy as np import sys Np=input('How many number of particles do you want to simulate?'); Nsteps=input('How many steps do you want to perform?') L=input('What is the side length of square lattice?') if Np<L*L: print(...

I am creating a true or false quiz game and when the user chooses an answer a tick or cross will appear on the screen telling the user whether they are right or wrong and then automatically bring the next question in. Currently I am using 2 almost identical functions that draw the next question ...

As a new Java learner I would like to improve my coding style. I wrote a program which gets as an input a file name, and asks for two file names for the output. the first output file includes all the words from the input file with their number of occurrences. the second output file includes the...

I have this code for a digital clock. It runs fine with no errors but the frame comes up empty. Any ideas why? import java.awt.*; import java.awt.event.*; import java.awt.geom.*; import javax.swing.*; import java.util.*; public class D extends JPanel implements Runnable{ /** * */ private ...

I wrote my first app with backbone. Also try requirejs in second edition. I want to ask you to review my code and give feedback about it. What is wrong, how to fix it ? here is app with backbone and this is app with backbone and requirejs second app (which with require) better deploy on iis ...

I have a couple of models - User & Score. I am displaying data from those models to my template. Data from Score is filtered based on data from User. I am using nested for loops and an if condition within the template to get my desired result. However, I want to know if there is a better way of c...

Ok, I should probably start with a little background. I'm developing a small programming language for use in any project I have where I feel a small scripting language could be used well. I've written two emulators for the language, one in C++ and one in Java. The C++ performs faster except for a...

Generate as many distinct primes P such that reverse (P) is also prime and is not equal to P. Output: Print per line one integer( ≤ 10^15 ). Don't print more than 10^6 integers in all. Scoring: Let N = correct outputs. M = incorrect outputs. Your score will be max(0,N-M). ...

I am doing FizzBuzz on a take home test (in Unity). I am sure this is just a competency check, but I went ahead and followed some coding conventions such as using constant fields, dependency injection, comments, etc. Is this overkill? If I should "dumb it down", how should I do so? Also, as s...

I want to validate the input text to be only alphabets.If its empty or number then the user will be notified.I have written the code but its not working at all.Can anyone tell me what is wrong with my code and how to rectify it? < !DOCTYPE html > < html > < head > < script language = "...

I took the code from kostyas benchmarks for the Rust Brainfuck interpreter and tried to optimize it. There is also a discussion on Reddit about the poor performance of Rust in the Benchmark. Before my improvements the code needed 16.81s to complete the benchmark and used 6.2Mb of memory, after t...

I often observed that some of my questions were revised by moderators, and till now I always understood (and approved) the reason of the modification: correcting typos or language faults, adapting title to be more descriptive, and so on. But just now I faced a revision I can't understand. My que...

I am using opencv for face recognition task. It has two steps such as Feature extraction --I used Local Binary Patterns (LBP) Feature classification - SVM My implementation is that I will extract LBP feature from training image. Then, the feature is mapped to histogram (1D) for SVM input trai...

I was hoping someone could check the library I 'm working on to see if they could give any suggestions. My biggest issue right now is getting tuple to work with more than just the basic types and I also wanted to add exception safety; is this only necessary for the file save/load functions? I als...

Thanks for coming in and taking a look. My main concern right now is that I am turning the entire QuerySet into a list which could be problematic if there is a very large QuerySet. My other concern is speed, since this may be used in an e-commerce website I want it to be as quick as possible. ...

Dilemma The code below is in its infancy, but for now is an effort to crawl my entire file system and find duplicates whilst adhering to a variety of exclusion criteria. My current strategy for determining if two files are identical—comparing their checksums—seems unfeasible because it takes far...

I have developed an application using Spring Framework to manage Projects, where customers and designers can interact with a project. There are certain kind of interactions with projects that should be notified to the counterpart user, for example, when a designer requests the customer's aproval ...

I have a list of nested dictionaries: list_of_nested_dicts = [{'a': {'c': 2}, 'b': 3}, {'a': {'c': 1}, 'b': 4}] I want to sort it by the value associated with the key c. [{'a': {'c': 1}, 'b': 4}, {'a': {'c': 2}, 'b': 3}] Can I achieve this with operator.itemgetter() or operator.attrgetter()...

I am using Callable in my code which will be called by multiple threads as shown below. Given a user id in DataKey object, I will find out what are the hostnames I can use to get the data and then I will iterate that hostnames list one by one to get the data. As of now, whenever any RestClientE...

This is a Python 3 solution to the problem stated in Sales Tax Problem, rejected for not being up to their standards. It also seems like the same thing as the problem stated in Sales tax calculator, rejected for being not OOP. I'm not bothering with the requirement to round sales tax to the neare...

I work on a slideshow and like to receive some feedback about the performance. Do you think a Parallax Scrolling effect would reinforce the slider? What can be done better? http://codepen.io/anon/pen/VLbKKJ Browser support from IE 9+

I went through a question on SO, and optimized the code according to OP's requirements, i just want it to review if it is done properly or not. Here is the code snippet, there are 2 level buttons, when clicked 1st level button, it toggles second level button group. Second level button group tog...

Lights Off is a puzzle game consisting of an n x n grid of lights. At the beginning of the game, some of the lights are switched on. When a light is pressed, this light and the four adjacent lights are toggled, i.e., they are switched on if they were off, and switched off otherwise. The purpose o...