Showing 260 open source projects for "problem a"

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  • 1
    Problem

    Problem

    A Java library that implements application/problem+json

    Problem is a library that implements application/problem+json. It comes with an extensible set of interfaces/implementations as well as convenient functions for everyday use. It's decoupled from any JSON library but contains a separate module for Jackson.
    Downloads: 0 This Week
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  • 2
    FastQC

    FastQC

    A quality control analysis tool for high throughput sequencing data

    FastQC is a quality control analysis tool designed to spot potential problems in high throughput sequencing datasets. Its goal is to provide a simple way by which to check the quality of raw sequence data coming from high throughput sequencing pipelines. It does this by running a modular set of analyses on one or more raw sequence files in fastq or bam format. It then produces a report summarizing the results, and highlighting any areas where the library may appear unusual. This should then...
    Downloads: 42 This Week
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  • 3
    LeetCode Animation

    LeetCode Animation

    Demonstrate all the questions on LeetCode in the form of animation

    ...The goal of the project is to help learners understand complex algorithmic concepts intuitively by showing step-by-step animated explanations instead of relying solely on static code or text. Each animation corresponds to a specific problem and illustrates how data structures and algorithms operate dynamically, making it easier to grasp their underlying logic. The project also includes a curated set of 40 problems from the “Sword Pointing to Offer” series—commonly asked in technical interviews—accompanied by detailed analyses and visual breakdowns. These materials are designed for both beginners starting their algorithm journey and experienced developers seeking to reinforce their understanding. ...
    Downloads: 0 This Week
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  • 4
    TeXtidote

    TeXtidote

    Spelling, grammar and style checking on LaTeX documents

    ...Since LaTeX documents contain special commands and keywords (the so-called "markup") that are not part of the "real" text, you cannot run a grammar checker directly on these files: it cannot tell the difference between markup and text. The other option is to remove all this markup, leaving only the "clear" text; however, when a grammar tool points to a problem at a specific line in this clear text, it becomes hard to retrace that location in the original LaTeX file. TeXtidote solves this problem; it can read your original LaTeX file and perform various sanity checks on it: for example, making sure that every figure is referenced in the text, enforcing the correct capitalization of titles, etc. ...
    Downloads: 0 This Week
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  • 5
    Pinpoint

    Pinpoint

    APM, (Application Performance Management) tool

    ...How each and every transaction gets executed is often left as a blackbox. Pinpoint traces transaction flows between these components and provides a clear view to identify problem areas and potential bottlenecks.
    Downloads: 7 This Week
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  • 6
    CTFcrackTools

    CTFcrackTools

    China's first CTFTools framework

    The first CTF tool framework in China. China's first CTFTools framework designed to help CTFer quickly overcome the CTF problem. Use kotlin and java mixed development. This is probably the first tool framework applied to CTF in China. Built-in current mainstream password, includes but is not limited to Virginia password, Caesar password, fence password. Users can write plugs independently, but only support Python to write plugs. The writing method is also extremely simple.
    Downloads: 8 This Week
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  • 7
    Jailer Database Tool

    Jailer Database Tool

    Database subsetting and relational data browsing tool

    ...It creates small slices from your database and lets you navigate through your database following the relationships. Ideal for creating small samples of test data or for local problem analysis with relevant production data. Creates small slices from your productive database and imports the data into your development and test environment (consistent and referentially intact). Improves database performance by removing and archiving obsolete data without violating integrity. The Data Browser lets you navigate through your database following the relationships (foreign key-based or user-defined) between tables. ...
    Downloads: 7 This Week
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  • 8
    Genie

    Genie

    Distributed Big Data Orchestration Service

    Genie is a completely open source distributed job orchestration engine developed by Netflix. Genie provides REST-ful APIs to run a variety of big data jobs like Hadoop, Pig, Hive, Spark, Presto, Sqoop and more. It also provides APIs for managing the metadata of many distributed processing clusters and the commands and applications which run on them.
    Downloads: 1 This Week
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  • 9
    LeetCode Book

    LeetCode Book

    Comprehensive study guide for coding interviews

    ...Many entries include template code and “swap-in” variations, helping you recognize how the same technique adapts across similar problems. The book also emphasizes problem-solving habits like deriving invariants, choosing appropriate data structures, and verifying with small counterexamples. It’s suitable for newcomers building fundamentals and for experienced engineers polishing timing and correctness under interview pressure.
    Downloads: 3 This Week
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  • 10
    Mockito

    Mockito

    Most popular Mocking framework for unit tests written in Java

    ...Mockito 2.25.0 had an important feature added for anyone using mockito-inline. In particular anyone using Kotlin (which demands using mockito-inline) and PowerMock (which exacerbates the problem even more) will want to add this to all of their test classes to avoid a large memory leak. Fancy getting world-wide visibility and building up an eternal fame of an OSS contributor? Use the latest version! Hack and experiment. Speak up at the mailing list. Mockito is a mocking framework that tastes really good. It lets you write beautiful tests with a clean & simple API. ...
    Downloads: 9 This Week
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  • 11
    react-native-ble-manager

    react-native-ble-manager

    React Native BLE communication module

    The library is a simple connection with the OS APIs, the BLE stack should be standard but often has different behaviors based on the device used, the operating system and the BLE chip it connects to. Before opening an issue verify that the problem is really the library.
    Downloads: 0 This Week
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  • 12
    Interviews

    Interviews

    Comprehensive computer science and interview preparation guide

    Interviews is an open source repository designed as a comprehensive guide to preparing for technical interviews, with a strong focus on computer science fundamentals and algorithmic problem solving. Created by Kevin Naughton Jr., the project compiles detailed notes, explanations, and code implementations that cover core areas tested in software engineering interviews. The repository emphasizes topics such as data structures, algorithms, system design, operating systems, databases, and networking. It also includes practical coding examples and solutions that demonstrate how to approach and solve common problems asked at companies like Google, Amazon, Facebook, and Microsoft. ...
    Downloads: 0 This Week
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  • 13
    Pitest

    Pitest

    State of the art mutation testing system for the JVM

    PIT is a state of the art mutation testing system, providing gold standard test coverage for Java and the jvm. It's fast, scalable and integrates with modern test and build tooling. Faults (or mutations) are automatically seeded into your code, then your tests are run. If your tests fail then the mutation is killed, if your tests pass then the mutation lived. As it is actually able to detect whether each statement is meaningfully tested, mutation testing is the gold standard against which...
    Downloads: 2 This Week
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  • 14
    tigerbeetle

    tigerbeetle

    The financial transactions database designed for mission critical safe

    ...TigerBeetle is a financial transactions database designed for mission-critical safety and performance to power the next 30 years of OLTP. TigerBeetle redesigns the distributed database storage engine and consensus protocol for the OLTP workload. This solves the problem of OLTP write contention to unlock three orders of magnitude more performance than a general purpose (OLGP) database. The language of business transactions around the world is Debit/Credit. TigerBeetle ships with this schema out of the box. A single TigerBeetle cluster can process over 100 billion transactions, at a hundredth of the cost compared to legacy, proprietary, or cloud databases.
    Downloads: 0 This Week
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  • 15
    Micronaut Data

    Micronaut Data

    Ahead of Time Data Repositories

    ...Both GORM and Spring Data maintain a runtime meta-model that uses reflection to model relationships between entities. This model consumes significant memory and memory requirements grow as your application size grows. The problem is worse when combined with Hibernate which maintains its own meta-model as you end up with duplicate meta-models. Micronaut Data instead moves this model into the compiler. Both GORM and Spring Data use regular expressions and pattern matching in combination with runtime generated proxies to translate a method definition on a Java interface into a query at runtime. ...
    Downloads: 0 This Week
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  • 16
    Joda-Time

    Joda-Time

    Replacement for the Java date and time classes prior to Java SE 8

    The standard date and time classes prior to Java SE 8 are poor. By tackling this problem head-on, Joda-Time became the de facto standard date and time library for Java prior to Java SE 8. Note that from Java SE 8 onwards, users are asked to migrate to java.time (JSR-310) - a core part of the JDK which replaces this project. The design allows for multiple calendar systems, while still providing a simple API. The “default” calendar is the ISO8601 standard which is used by many other standards. ...
    Downloads: 1 This Week
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  • 17
    Fresco

    Fresco

    An Android library for managing images and the memory they use

    ...When the image goes off-screen, it automatically releases its memory. A decompressed image - an Android Bitmap - takes up a lot of memory. This leads to more frequent runs of the Java garbage collector. This slows apps down. The problem is especially bad without the improvements to the garbage collector made in Android 5.0. On Android 4.x and lower, Fresco puts images in a special region of Android memory. It also makes sure that images are automatically released from memory when they’re no longer shown on screen. This lets your application run faster - and suffer fewer crashes.
    Downloads: 2 This Week
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  • 18
    Odigos

    Odigos

    Distributed tracing without code changes

    Odigos supports any application written in Java, Python, .NET, Node.js and Go. Historically, compiled languages like Go have been difficult to instrument without code changes. Odigos solves this problem by uniquely leveraging eBPF. Odigos currently supports all the popular managed and open source destinations. By producing data in the OpenTelemetry format, Odigos can be used with any observability tool that supports OTLP. Odigos automatically scales OpenTelemetry collectors based on observability data volume. Manage and configure collectors via a convenient web UI. ...
    Downloads: 0 This Week
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  • 19
    Spring for GraphQL

    Spring for GraphQL

    Spring Integration for GraphQL

    ...Spring for GraphQL is the successor of the GraphQL Java Spring project from the GraphQL Java team. It aims to be the foundation for all Spring, GraphQL applications. The project reached version 1.0 in May 2022. Please, use our issue tracker to report a problem, discuss a design issue, or to request a feature. Each Spring project has its own; it explains in great details how you can use project features and what you can achieve with them.
    Downloads: 0 This Week
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  • 20
    Java Basics

    Java Basics

    Large educational repository for learning and reviewing modern Java

    ...Separate resources cover JDBC, JSP, Servlets, Hibernate, and common design patterns. The repository also contains dedicated Java program collections for hands-on practice and problem solving. Its broad structure makes it useful for beginners, interview preparation, and developers refreshing specific Java concepts. Content is organized as a long-form reference rather than a single application or course project.
    Downloads: 0 This Week
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  • 21
    DSA Bootcamp Java

    DSA Bootcamp Java

    This repository consists of the code samples, assignments, and notes

    DSA Bootcamp Java is an open source educational repository created by Kunal Kushwaha to teach Data Structures and Algorithms (DSA) using Java. It is designed as a structured bootcamp, covering fundamental concepts to advanced problem-solving techniques. The project provides explanations, exercises, assignments, and practice problems, making it useful for both beginners and intermediate learners who want to strengthen their Java and algorithmic skills. The repository is organized into multiple modules that start with Java basics and gradually progress toward arrays, recursion, sorting, searching, linked lists, stacks, queues, trees, graphs, dynamic programming, and other advanced topics. ...
    Downloads: 1 This Week
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  • 22
    Fen2Pdf

    Fen2Pdf

    Tool for chess teachers to create PDF files with chess diagrams in it

    Tool for chess teachers to create PDF files with chess diagrams in it. 1) Create a pgn file with chess diagrams (FEN notation) in it (e.g by using lichess) 2) Open the Fen2Pdf and select the folder containing the pgn(s) 3) Click start. Fen2Pdf detects the pgn files in it and creates a pdf file You can now print this file and hand the exercises over to your students Extra features: * Mirror the positions. This is handy if you want the same problems presented for the other color...
    Downloads: 3 This Week
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  • 23

    Billiards Everything

    The Great Periodic Path Hunt at gwtokarsky.github.io

    Researchers, Mathematicians and Enthusiasts. Download "Billiards Everything" to discover new periodic billiard paths, an unresolved problem from 1775! Download "Billiards Covers" to see the most current list of periodic paths in triangles. Follow "The Great Periodic Path Hunt" at gwtokarsky.github.io for the latest news. Email tokarsky@ualberta.ca for feedback.
    Downloads: 3 This Week
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  • 24
    Advanced Trigonometry Calculator

    Advanced Trigonometry Calculator

    Open-source C/C++ math engine for advanced scientific computing

    ...Created in 2011 and maintained by Renato Alexandre dos Santos Freitas, ATC is designed as a practical Windows desktop application for advanced calculations, automation, and technical problem solving. ATC supports equation solving, polynomial tools, complex numbers, matrix calculations, statistics, physics, geometry, unit conversions, DSP/FFT operations, and scripting. It can also process batch TXT files, making it useful for repeatable calculations and automated workflows. The project also includes ATC Online Alpha, a WebAssembly-based version that brings parts of the ATC engine to the web. ...
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    Downloads: 6 This Week
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  • 25

    Billiards Covers

    This zip jar contains the current coverings of periodic paths.

    ...Download "Billiards Covers" to see the most current list of periodic paths in triangles. Download "Billiards Everything" to discover new periodic billiard paths, an unresolved problem from 1775! Follow "The Great Periodic Path Hunt" at gwtokarsky.github.io for the latest news. Email tokarsky@ualberta.ca for feedback.
    Downloads: 1 This Week
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