My friend and I are trying to automate some Christmas tree lights that I got on sale last year. I will be able to measure the output of the voltage, and there are 4 functions: steady on, blinky on, slow fade up/down, and off. I don't even want to post my code, because it's probably such a wrong...

I wanted to give a shot to Modelling a Call Center from Cracking the Coding Interview. The problem statement is as follows: You have a call center with three levels of employees: Respondent, Manager, Director. An incoming phone call must be allocated to a respondent who is free. If the respon...

I am trying to plot the following data using the columns, ID, ACT_m and GPA into the scatter plot, but I don't see any data in my plot. Thank you so much for your time. ID Gender ACT_m ACT_c GPA 6001 Female 25 24 4.062 6010 Male 24 ...

as a self-taught programmer I have no idea what is going on in the real, professional world of Android development (and I am sure there are tons of other people here, too). I have just created the basis for my first non-tutorial app and was just wondering if I am going in the right direction, es...

I was trying to solve a problem on de-arrangements (Number of partial derangement such that exactly prime number discs are found away from their natural positions? (Any number of non-prime K disks may also be found in or out of their natural positions)). Somehow solved it using recursion but m...

When dealing with iOS app bundle, It is not convenient to get the file by its path, but loading it by its name. Need to batch rename images recursively, with Mac Bash. And to make the name unique, the directory index should be numbered. To rename files ,turn Root----A----0.png | ...

I wrote a function in Java that edit file name, and replace each space char into dash char. Currently I iterate all the files in a specific directory, iterate in each file name, creating a new file name, and replace the file in the directory. I guess that the current complexity is \$O(N*M)\$ ...

Using names.txt (right click and 'Save Link/Target As...'), a 46K text file containing over five-thousand first names, begin by sorting it into alphabetical order. Then working out the alphabetical value for each name, multiply this value by its alphabetical position in the list to obt...

I am using a set of data points (currently randomly generated), and drawing a line graph inside a box: struct DrawLine: View { var body: some View { ZStack { Rectangle() .stroke(lineWidth: 1.0) .fill(Color.purple) .frame(wid...

I've written a small project, initially designed to help me remotely control my home PC from my office. I had to deal with an annoying firewall, so I've written it as a reverse TCP (meaning it's the client connecting to the server but the server is the one giving orders). Anyway, I've now attemp...

The question states that we are given an empty list and 10^5 queries.For each query, we have two integers a and b.a can only be 1, 2 or 3. if a=1, then append element b in the list. if a=2, then add value b to every element of the list. if a=3, then we have to print the bth smallest element i...

Assume directed graph with each edge being weighted by some positive float. Problem: find all simple paths (in other words, [0, 1, 2, 0] is simple while [0, 1, 0, 1, 2 0] is not due to internal [0, 1, 0] cycle) with length <= cutoff and "push" them using pusher callback. P.S. There ex...

I am solving a simple 1D steady heat question using spectral method. I am a long time MATLAB and Mathematica user and trying to learn Phyton. I compare only linear solving times and Phyton is way slower than MATLAB which doesn't feel right. Can you please tell me my mistake? MATLAB code N=500...

During a project at my work I needed a convenient way to store values taking up the smallest amount of bits necessary, not in memory but later when they're serialized into an array of unsigned short ints. For instance, a value that could be between 0 and 7 was only supposed to be 3 bits long. I e...

I am a hobbyist computer programmer trying to learn modern C++ (in this case C++17). I thought it might be an interesting challenge to write a tokenizer class for breaking down microsoft (and other) .CSV files into tokens. My tokens are simply a std::variant<int, double, std::string>, and I wrote...

It's only 38 lines of code and I haven't worked with web scraping that much before. How heavy would my code be on their server? It's for Deep Learning purposes and I haven't ran it yet but would it result in my IP getting banned a quarter way through once I start downloading the 70k ...

I implemented class Range as an equivalent to Python built-in range for practicing purposes. No features were added. Hope it mimics all aspects of range behavior, but maybe you can point out something I forgot. Also I tried to make the code efficient, that's why Range doesn't inherit from collect...

everyone! I wrote a simple currency converter in Python. I'll appreciate some tips about how I can improve my little script; what new features would be nice to add to my project? Right now, my currency converter converts using the last available rate or convert using a specific date. Many thank...

I was looking at online implementations of Quicksort and was disappointed how many of them seemed to have a low amount of readability. I've written this Quicksort algorithm in C++ with the goal of being as elegant as possible, including full words for variable names. I'm looking for feedback on ...

https://leetcode.com/explore/interview/card/top-interview-questions-medium/110/sorting-and-searching/799 Given a non-empty array of integers, return the k most frequent elements. Example 1: Input: nums = [1,1,1,2,2,3], k = 2 Output: [1,2] Example 2: Input: nums = [1]...

I am more than willing to use both a Promise library and an AJAX calls one if the situation calls for it. This base class sits at the very bare bones of my system and it needs to be done right. My goal here was to create a bass class in JS that can be extended to help with AJAX calls using Promi...

Trying to remove the begin and end statements to modify the script to Get-MyBios on PowerShell ISE and I don't know where to remove from this code: Param ( #name of remote computer [ Alias("cn") ] [Parameter(ValueFromPipeline=$true, Position=0, Parameter...

The title is fairly self-explanatory. I made a simple dropdown menu which opens when clicked, and closes when the user clicks anywhere outside the menu. The following is the codebase: function deactivateAllDropdownTriggers() { document.querySelectorAll('.dropdown-trigger.active').forEach(...