Questions tagged [comparative-review]
This tag is used for questions which present a problem and multiple solutions, where the asker wishes to know which solution is best (and why).
739
questions
6
votes
2answers
57 views
Function invocation every second time
Recently I got test task at the project, it is fairly simple:
...
4
votes
2answers
54 views
Displaying IP addresses in Go using Stringer interface
I am trying out some Go code examples (while coding a private project) to get more "in-depth" knowledge about the language.
I have come across an exercise from the Go Tour website about displaying ...
0
votes
1answer
70 views
Adding a Node to the Linked List is taking a longer Time when using a reference to the Tail Node
I am trying to add two numbers in the form of linked List and return their result in a Linked List as given in https://leetcode.com/problems/add-two-numbers/
Question:
You are given two non-empty ...
2
votes
3answers
101 views
Finding the next available filename
We're having a small debate in work about the following piece of code:
...
7
votes
1answer
78 views
Function to send email, refactored based on SOLID principles
I have the below method that is responsible for generating and sending a MailMessage using a SmtpClient object:
...
3
votes
1answer
38 views
Evaluating π using Monte Carlo methods - Serial vs OMP
I wrote this simple code for evaluating the π using Monte Carlo method. This is the serial version:
...
5
votes
1answer
121 views
Detecting the presence of multiple URL segments
I have two versions of a function that performs the same task, however I'm not sure which one to use. Speed is something to take into consideration, but I also want to know what the best practice is. ...
0
votes
1answer
64 views
One try with multiple catch blocks vs nested try
I am creating program which will parse .csv file and I am using FileReader and Scanner classes from java API.
...
3
votes
3answers
77 views
Find minimum value in a BST: using boolean operators, and using conditionals
I've been studying the BST code in Paul Graham's ANSI Common Lisp.
He provides (my comments):
...
1
vote
1answer
84 views
Two solutions to 2-sum
I have written a solution for two sum problem in variation. first is simple with two loops and another one is one loop and hash map.
But I wonder why the simple solution is faster than the efficent ...
2
votes
1answer
45 views
Nodejs functions to load and save RSA keys
I'm creating my first real life Nodejs project. I've created some files and all work, but I'm not satisfied about what my files look likes. It's unreadeble.
For example, I work of a file to manage ...
4
votes
3answers
177 views
SkipLast of an IEnumerable<T> - Linq Extension
As my answer to this question, I came up with this solution:
...
3
votes
1answer
69 views
Pre-calculate the winning combinations for an n-sized tic tac toe board using C++ functional programming
This code pre-calculates the winning combinations for an n-sized tic tac toe board.
I first created my function using an imperative approach. This is just how I naturally write code most of the time....
1
vote
1answer
35 views
Aspect-oriented vs explicit style in Python [closed]
Readability counts, but is very subjective. The following snippets are equivalent in functionality and turn a generator iterator into a chunked HTTP response in Flask. Which of those two patterns is ...
6
votes
1answer
794 views
Avoid using C Strings on C++ code to trim leading whitespace
I'm learning C++ and wrote a function to remove all the spaces and tabs at the beginning of the input string. It removes them until it find a character different of space and tabs.
In the first ...
2
votes
1answer
31 views
Two ways to implement DND type abilities
I am creating a game in Java that uses the DND model for a lot of its components. I've hit a roadblock when it comes to creating and implementing abilities. I have ...
5
votes
1answer
85 views
EEPROM-based filesystem, aiming for Misra C++ 2008 compliance
I'm writing code for embedded systems (IAR compiler) and it should adhere to Misra C++ 2008. This limits the available features of the language quite a bit:
no C++1x features
use of the standard ...
2
votes
1answer
67 views
Fetching configuration or default value
I have two code snippets, doing exactly the same thing and both get the job done:
use defaults
use from config
Which is cleaner to use in golang and why?
first option:
...
4
votes
1answer
21 views
Showing a “back-to-top”-button after scrolling a certain amount
I have a "back to top"-button on the page, It should be visible after the user has scrolled a certain amount*.
This means I have to add or remove a class active ...
3
votes
1answer
81 views
Most efficient way to check if user is allowed to update an object
So I have an user which can create his own Locations.
I implemented a webservice in order to add and update locations. If the user is not the owner of the location i want to throw an appropriate ...
4
votes
1answer
98 views
Two ways of implementing a combat system
Below is a segment of a game I am writing to stay in practice with my Java.
EDIT The class this method is in is the Encounter class. This class just manages the encounter between the player and an ...
3
votes
2answers
68 views
Optimizing Luhn check digit algorithm
The internet as a whole and Code Review in special already provide a decent amount of implementations of the Luhn check digit algorithm. They often follow a relatively "naive" strategy, in that they ...
0
votes
0answers
49 views
Merge Two Sorted Lists in JavaScript
The task is taken from LeetCode
Merge two sorted linked lists and return it as a new list. The new list should be made by splicing together the nodes of the first two
lists.
...
2
votes
1answer
50 views
Populating dropdown lists, using SQL vs. using expression trees and reflection
I'm working with a large enterprise SQL Server database with dozens of tables that are used mainly as lookups to populate dropdown lists, etc. These tables all follow the convention of having (table)...
5
votes
0answers
90 views
Java multithreading many readers one writer implementations
I have a shared data object with writer threads and reader threads. Number of threads can read from the shared data at the same time (in the code getmethod), and ...
2
votes
1answer
55 views
Length of the longest consecutive run of 1s in its binary representation
The task
Given an integer n, return the length of the longest consecutive run
of 1s in its binary representation.
For example, given 156, you should return 3
My function solution 1
Style 1
...
0
votes
1answer
31 views
Filling in the card expiry date from transaction data
I'm integrating my app with a payment gateway, and have the following code which returns an array to populate the transaction info:
...
2
votes
2answers
70 views
Python program for Jump game II
This is a Leetcode problem:
Given an array of non-negative integers, you are initially positioned at the first index of the array.
Each element in the array represents your maximum jump length ...
-3
votes
3answers
126 views
Python program to find the first missing positive integer in a list
This is a Leetcode problem:
Given an unsorted integer array, find the smallest missing positive
integer.
Note:
Your algorithm should run in O(n) time and uses constant extra space.
...
7
votes
1answer
200 views
Usage of TPL vs Parallel.ForEach() on file processing
i've been working on an implementation of a my own from scratch set of library Astron and I wanted to get my TPL usage reviewed because i'm not confident with this technology :/
My app is currently ...
3
votes
1answer
79 views
API for multiple printer attributes [closed]
I have network printers which have different attributes (e.g. supported network protocols, languages, status, print modes).
...
4
votes
2answers
84 views
Create a min stack
The task
is taken from leetcode
Design a stack that supports push, pop, top, and retrieving the
minimum element in constant time.
push(x) -- Push element x onto stack.
pop() -- Removes ...
3
votes
3answers
46 views
Counting duration values
I have a durations as such:
[{'duration': 3600}, {'duration': 3600}]
And I want the output to be ...
5
votes
1answer
79 views
Container with most water
The task
is taken from leetcode
Given n non-negative integers a1, a2, ..., an , where each represents
a point at coordinate (i, ai). n vertical lines are drawn such that
the two endpoints of ...
4
votes
1answer
158 views
Return all valid paren strings with a given length
The problem is
Given a non-negative integer n, return all valid parentheses strings
with n open parens and ...
6
votes
5answers
564 views
Checks user level and limit the data before saving it to mongoDB
I have a function that checks user level and limits the data before saving it to mongoDB database (pre 'save' middleware for mongoose).
It have been getting complexity warnings and tried to rewrite it,...
7
votes
3answers
1k views
malloc in main() or malloc in another function: allocating memory for a struct and its members
When initializing a struct in C, we can allocate memory inside the main function or within another function and return a pointer to the newly created struct. This ...
1
vote
1answer
68 views
Simple MySql or MySqli Class
Which one of these methods is better/safer to use? And what benefits could I get using one or other?
Simple mysqli:
connection.php
...
4
votes
1answer
45 views
Comparing 2 iOS and Android versions
Please review and let me know which version is better. I'm just trying to find any caveats or better ways to accomplish the a version comparison independent from Android and iOS.
Formats accepted: '1....
1
vote
1answer
102 views
Given a list and a number k return whether any two numbers from the list add up to k
The task:
Given a list of numbers and a number k, return whether any two numbers
from the list add up to k.
For example, given [10, 15, 3, 7] and k of 17, return true since 10 +
7 is 17.
...
1
vote
1answer
49 views
Clone Vector in rust except at one index [closed]
Let's consider you want to clone all items of a vector orig except the item of index i should be taken from alternative value <...
5
votes
1answer
68 views
Two cross-platform implementations of getline in C
I created my cross-platform implementations of getline function in C.
It takes different arguments and have different return values than 'original' ...
1
vote
0answers
60 views
No performance gain with SIMD 3D vector for ray tracer
I wrote two versions of vector class for my ray tracer. Non-SIMD version and SIMD version. You can find the code below. I want to ask what things should I keep in mind to get max performance with SIMD....
3
votes
0answers
81 views
A Node and a Socket, template or inheritance? [closed]
I'm trying to create a node based scripting/computation system.
I've come up with 2 solution that seems to work. One involves template, the other one inheritance. Basically what I want to achieve is: ...
0
votes
1answer
60 views
Formatting milliseconds as days, hours, minutes, and seconds [closed]
This is a function which aims to convert an amount of milliseconds to a more human-interpretable Day(s) Hour(s) Minute(s) Second(s) format:
...
0
votes
0answers
94 views
Kadane's algorithms to leetcode “121 Best Time to Buy and Sell Stock”
I employed the conventional Kadane's algorithms to solve a maximum subarray problem in leetcode Best Time to Buy and Sell Stock - LeetCode
Best Time to Buy and Sell Stock
Say you have ...
3
votes
1answer
59 views
4 solutions to leetcode 202. Happy Number have almost same performance
I am working on an easy math question Happy number Happy Number - LeetCode
Happy Number
Write an algorithm to determine if a number is "happy".
A happy number is a number defined by ...
3
votes
0answers
31 views
Two solutions to leetcode 127.wordLadder
I am working on Word Ladder - LeetCode
Given two words (beginWord and endWord), and a dictionary's word list, find the length of shortest transformation sequence from beginWord to endWord, such ...
4
votes
1answer
85 views
Time(n) Complexity of Fibonacci Algorithms
It is my first use of classes in Python. I wanted to create something useful and try some new things as I learn this cool language: strategy pattern, testing with nanoseconds precision, curve/poly ...
0
votes
0answers
59 views
Median of three partitioning taking more time than standard quicksort in java
I implemented a standard quicksort and I have a project where I need to improve it. I am trying to make quicksort faster by implementing median of 3 partitioning. I copied codes from trusted ...
