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Ryan Vickramasinghe's Projects

assignment1 icon assignment1

Visual representation of sorting algorithms that I wrote.

binary-search-tree icon binary-search-tree

A simple application which scans a data file and stores it in a custom-built binary search tree.

buffered-executor icon buffered-executor

This is a class that is designed as producer-consumer queue that can be used with an arbitrary producer and consumer type.

chat-app-api icon chat-app-api

A full-featured messaging/chat API I created using Javascript, NodeJS, and Express.

concurrent-counter icon concurrent-counter

This is a more efficient concurrent counter implementation (using the approximate counter design).

country-data-analysis icon country-data-analysis

An analysis of various countries, and their GDP, energy research contributions, and Sciamgo Engineering index. This analysis shows merging of 3 files using Pandas and Numpy.

course-registration-api icon course-registration-api

The API portion for the course-registration-site. Queries both firebase and mongoose for data, and handles user authorization.

datamerge icon datamerge

This program will scan a directory for multiple data files in columns (separated by the | symbol), and merge all of them. It currently can handle data files where columns are in different orders.

derivatives-tool icon derivatives-tool

( In progress) A tool to create and visualize profit/payoff for various financial derivatives.

discrete-time-signals icon discrete-time-signals

MATLAB script showing sampling of signals at various frequencies, and processing of Google stock market data to determine an average.

encryption icon encryption

Some encryption algorithms I implemented myself in order to gain a better understanding (and NO, I will never write my own encryption in practice).

hashmap icon hashmap

A hashmap I implemented from scratch.

heart-disease-predictions icon heart-disease-predictions

Using machine learning to predict whether or not an individual will have heart disease based on some basic statistics (i.e. age, sex, resting heartrate).

image_whitening icon image_whitening

Mathematically increase the white levels in an image. There are two functions, a less efficient one using loops, and a more efficient one which lowers all values below a certain threshold.

lox-interpreter icon lox-interpreter

An interpreter for the Lox language I'm building from scratch using C++.

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