There is a Min-Heap implementation in Java. BubbleUp() and BubbleDown() could have been coded using recursion but I prefer without recursion. Would there be a major difference if had used recursion?
package heap;
import interfaces.queue.PriorityQueue;
import java.util.Arrays;
import java...
In Algorithms fourth edition by Robert Sedgewick and Kevin Wayne, the exercise 2.2.10 states that:
Implement a version of merge() that copies the second half of a[] to
aux[] in decreasing order and then does the merge back to a[]. This
change al- lows you to remove the code to test that ...
Over the past couple of years I've quietly developed a library for enforcing API contracts. The project is hosted at https://bitbucket.org/cowwoc/requirements/
Users write requireThat(name, "name").isNotNull().size().isLessThan(5) and get back:
java.lang.NullPointerException: name may not be nu...
I saw a question about prime factorization on Stack Overflow and realized I had never attempted it before. This was what I ended up with after some playing around and tweaking.
I'd like improvements on anything here.
I know I could use a sieve instead of the naive method (I may switch later), ...
I am using a java program to call .so file. Now I am getting an error (DDDII)V and i have no idea what might that be.. I am a complete noob.. Any help would be appreciated.
Here is the lines that try to load the .so file
void func(a,b,c,d,e){
System.loadLibrary("Jni_sample");
Jni_sample(a,b,c,d,...
I am self taught, so consistently seeking ways to code better, and more efficiently. If anyone has the time, please advise me on what can be done better with explanations as to why the old method is considered inefficient, and why the new method proves to be better. Also, where I can implement mo...
This is code
List<Data> listOfData = DAO.getInstance().findbyId(Id);
listOfDataBos = BoHelper.wrapList(listOfData);
Here we are creating a reference and then passing it to the wrapper function. Is there any harm in creating extra reference here provided that the reference is not used anywhere...
I found one problem of calculating the ranges of random integers.
for example:
for the input of 7,1
the range should be (1,1) and (7,7)
input 1,7,2 ---> output (1,2) (7,7)
input 1,7,2,3 ---> output (1,3) (7,7)
input 1,7,2,3,4 ---> output (1,4)(7,7)
input 1,7,2,3,4,9 ---> output (1,4)(7,7)(9,9)
...
I've been playing around with functional programming and testing with jest recently.
An issue I've run into, is that it's hard to mock ES6 module exports directly. See this Stack Overflow question for more details.
The solution I've come up with is to inject the dependency functions into the ...
Scenario 1:
try{
elements.personWrapper.getElement('span[name=personClass]').set('innerHTML', '');
} catch(TypeError) {
elements.personWrapper.getElement('input[name=personClass]').set('innerHTML', '');
...
Let's assume we have the following situation:
Multiple project topics exist, each corresponding to a natural number n,
students can sign in and choose two projects and give them either priority_1 or priority_2,
The name and the time when they sign in is tracked as well.
With all of the infor...
See From the below javascript code snippet which one is considered to be most appropriate? [on hold]
Scenario 1:
try {
elements.personWrapper.getElement('span[name=personClass]').set('innerHTML','');
} catch(TypeError) {
elements.personWrapper.getElement('input[name=personClass]').set('...
I'm writing a software application of a few thousand lines of code (in Python), and in order to keep the whole thing together, slowly but certainly the need for unit tests (and later, other types of tests...) has arisen.
My problem is how to organize the many testing functions that I've written ...
The end result of this is to allow a user to log in and/or register themselves for a dice game. please post some suggestions for improvement.
import pickle
logged_in = False
with open('users.pickle', 'rb') as a_file:
users = pickle.load(a_file)
login_or_signup = input('do you want to logi...
(Guess the Number) Write a program in c++ that plays the game of “guess the number” as follows: Your program should include a function (generateNum) that chooses the number to be guessed by selecting an integer at random in the range 1 to 1000. Every time when the user entered a number, the progr...
This code is for a currency symbol converter, The first part checks if there is a cookie named currency and if not creates it and sets 2 variables (variables used because of course php could not read the cookie unless it was reloaded after it was set. The second section is to check the existing c...
Similar to this question, here's is another implementation. Assuming the input is already a set.
(defn powerset
[set]
(reduce
(fn [xs x] (concat xs (map #(cons x %) xs)))
[()]
set))
Trying to migrate Mysql to Mysqli for php7 compatibility and having an issue with GetSQLValueString
$page = "-1";
if (isset($_GET['ID'])) {
$page = $_GET['ID'];
echo $page;
} else {
header('Location:http://www.???.co.uk');
exit();
}
$connect = mysqli_connect($...
