This question is an extension of this one, which is my implementation of a coordinate system using the Java learning software Karel J. Robot. With the below code, I created a way to automatically make the robot place beepers on spots on the coordinate plane to imitate drawing letters.
Here is th...
I have recently started writing C# from a strong JavaScript background, and found myself wanting to do something I do all the time in JavaScript: events.
Since I have a type system at my disposal, I figured I'd make use of it and make the event system type safe.
A quick note on existing options...
Simon's Guide for posting a good question
There are a lot of questions that appear on Code Review, and all questions are fighting for reviewer attention. This is a non-exhaustive list of items that I am looking for in a Code Review question when determining whether or not I should review it and ...
I am quite new to Go but have found it to be very useful for my use case (game server).
I have a routine that encrypts/decrypts the game packets which was written in C++ which can be seen here and here as DecryptDirect.
My current Go code:
type Crypto struct {
nkey [256]byte
b...
I want to get the feedback on the below code about the best practice I should follow and if I am using the connection pooling properly.
I have classes as follows:
DAOConnectionFactory- to fetch pooled connections from the Datasource.
WatcherService- the REST WS.
WatcherDAO- called by WatcherSe...
I have 3 variables and each one has their own percentage to win out of 99.99...%. (The 3 percentages don't act up to 100% perfectly)
When button1 is clicked, it will go through 100,000 simulations and afterwards it will output how many times each variable "won" in a MessageBox.
I would like som...I have refactored this. Once again, the running time can be anything between \$\Omega(n)\$ and \$\mathcal{O}(n^2)\$, yet it adapts to "smoothness" of the input array.
AdaptiveCountingSort.java:
package net.coderodde.util.sorting;
/**
* This class implements an adaptive counting sort that adap...
I am using C language as my programming language for basic cryptography. Then I saw this exercise in the book but I don't know how to do this one, it also seems that it is not clear what it is telling about.
"Your application should read a four-digit integer entered by the user and encrypt it as...
public boolean getYesOrNoAnswer(String yesNoPrompt)
is all I got.
Also it should be a method that can be called latter on in the code
I am new to this field.I am using google authentication to pull the data And i am using function check user.This is the line.But when i used mysqli_real_escape_string it simple insert a empty data to database.Ok just wait let me come to the point Is it already safe right when i am pulling data fr...
I answered a question on SO today, however it did't receive any up-votes, so I want to know what's wrong with my code.
The requirement is to compare the input numbers(granted to be positive), and insert the corresponding comparison sign between them. For example:
input: 4 6
output: 4 < 6
input...I have this algorithm for sorting integer arrays. Basically, it's a balanced tree sort which creates a tree node for each distinct integer, and in each tree node it maintains a counter counting how many times the integer key appeared so for in the array being scanned. After the array is scanned, ...
Here is my OrderBy method which includes concatenated column names.
Can this be achieved more efficiently?
public static IQueryable<T> Sort<T>(this IQueryable<T> query, List<SortationDto> sortations)
where T : BaseEntity
{
sortations.ForEach(s =>
{
Expression value = null;
...
Design a STRING class. Provide support for:
Assigning one object for another,
Two string can be concatenated using + operator,
Two strings can be compared using the relational operators.
Modify the STRING class so that assigning/initializing a string by
another will not...
New to Java and can't get this loops and arraylist working correctly.
Working on identifying co-occurences of Actors in a shakespeare play. The map and reduce should produce (Paul, Mary) 25. Indicating they were together 25 times.
Below is the map function to identify the cooccurences.
What i'...
I want to get a second-opinion on my use of goto.
SqlCommand and SqlDataReader only read the RETURN-value of a Stored Procedure after the SqlDataReader has been closed. This is a problem if you want to interrogate the return-value to make a decision regarding how you want to read the data.
In m...
Here is my approach,
class MinStack {
Stack<Node> s1 = new Stack<>();
public void push(int x) {
if(s1.isEmpty()) {
s1.push(new Node(x,x));
} else {
s1.push(new Node(x,Math.min(s1.peek().min, x)));
}
}
public void pop() {...
The task in question allows a user to re-rate a film such that only the latest rating from the user should remain in the database.
Initially I solved this problem in a very basic manor?
This was my result:
type Rating = (String, Int)
type Film = (String, String, Int, [Rating])
--Example ("Blad...
There are some very creative SE users and contributors to Code Review that have used the Stack API to build an open source SE Chat bot that is currently being used for many things.
https://github.com/Zomis/GithubHookSEChatService
The top contributors of this project have graciously offered to i...
I want to get some practice in writing C libraries and so started with something I can use straight away, a logging library. It is very basic and only has two levels: log everything and log only errors. Use logd (log debug) to log any low level thing and if log everything level set, that item w...
// cleaning / sort
db.Data.createIndex({"_created_at": -1});
// help : hackhands.com/vibhor
var start = new Date(2013, 2, 13, 0, 0, 0);
var end = new Date(2013, 2, 13, 23, 0, 0);
while (start < end) {
var newDate = start.setMinutes(start.getMinutes() + 5);
start = new Date(newDate);
...
I wrote a code which demonstrates how to cancel a job in Executor. Here is it:
ExecutorService executor = Executors.newFixedThreadPool(4);
Future<Void> future = executor.submit(new Callable<Void>() {
@Override
public Void call() {
//
// do some long running op ...
Here I am attaching snippet of my code.
% Matlab Code for region growing algorithm.
th = 20;diff = 10;
J = regiongrowing(img,CORD_XY(1),CORD_XY(2),th);
value1 = sum(sum(J>0));
if(num>10)
th = 55;
diff=10;
else if (num <=10)
while(diff <0.2*value1 && diff ~= 0 && th < 60)
val...I wrote a java code for array based deque. Are the conditions which I have included for insertion and deletion from front and rear sufficient and necessary?
Have I missed some condition check? Or have I included some redundant condition?
import java.io.*;
class Dequeue
{
int arr[];
int lim;
int ...
