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2140. Solving Questions With Brainpower

Given a 0-indexed 2D integer array 'questions' representing an exam where each question has points and brainpower constraints.
The task is to maximize points by solving questions considering brainpower limitations.
Dynamic Programming is suggested to decide the most optimal option for each question.
Solution involves DP array to track maximum points starting from each question.
For each question, two choices exist: solve with constraints or skip to the next.
Reverse iteration helps in considering each question's impact on future questions.
The algorithm efficiently determines the maximum points earned from solving exam questions.
Initialization of DP array and iterating from last question aids in optimal point calculation.
The approach computes the solution in O(n) time and space complexity for large input sizes.
Dynamic Programming is a powerful technique for optimizing decision-making processes in various scenarios.

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Towards Data Science

332

A Simple Implementation of the Attention Mechanism from Scratch

The Attention Mechanism is crucial in tasks like Machine Translation to focus on important words for prediction.
It helped RNNs mitigate the vanishing gradient problem and capture long-range dependencies among words.
Self-attention in Transformers provides information on the correlation between words in the same sequence.
It generates attention weights for each token based on other tokens in the sequence.
By multiplying query and key vectors and applying softmax, attention weights are obtained.
Multi-head Self-Attention in Transformers uses multiple sets of matrices to capture diverse relationships among tokens.
The dense vectors from each head are concatenated and linearly transformed to get the final output.
The implementation involves generating query, key, and value vectors for each token and calculating attention scores.
Softmax is applied to get attention weights, and the final context-aware vector is computed for each token.
A multi-head attention mechanism with separate weight matrices for each head is used to improve relationship capture.

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Dev

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Mastering httpResource Equality in Angular

The httpResource function in Angular 19.2.0 simplifies data fetching using signals, handling subscriptions and updates seamlessly.
HttpResourceOptions in Angular include properties like injector, defaultValue, parse, and equal for managing httpResource.
The equal function compares httpResource results to optimize performance by preventing unnecessary updates in Angular.
To set up Angular with httpResource, ensure the Angular CLI is installed and create or update a project.
A demo setting up a jokeResource httpResource to fetch programming jokes illustrates how the equal option works.
Installing Zod library and defining a Zod schema to validate and transform HTTP responses for the joke data.
The equality function in Angular compares jokes by ID to prevent unnecessary change detection cycles.
The httpResource function simplifies asynchronous data handling and integrates with Angular's reactive programming model.
httpResource is designed to work with signals for data fetching while HttpClient remains essential for complex HTTP interactions.
The httpResource function, with the equal option, optimizes data fetching performance in Angular applications efficiently.

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Towards Data Science

179

Create Your Supply Chain Analytics Portfolio to Land Your Dream Job

Supply Chain Analytics is crucial for resilient operations in today's volatile supply chain landscape, driven by factors like climate disruptions and geopolitical shifts.
The article discusses building a supply chain analytics portfolio with actual projects, presenting insights from the author's nine years of industry experience.
The Supply Chain Analytics Cheat Sheet provides tools, methodologies, and case studies to extract insights and optimize supply chain solutions.
It covers topics like data analytics for business strategy, logistics operations optimization, supply chain flow optimization, and sustainability.
Readers are guided on how to leverage analytics to boost profitability, optimize supply chain operations, and support sustainability initiatives.
The article suggests starting with a simple project, adding business value, refactoring code, and improving user interface to build a strong analytics portfolio.
By showcasing practical applications of analytics in supply chains, aspiring data scientists can demonstrate their skills and potentially land job opportunities in the field.
The author also emphasizes the importance of understanding business needs, packaging code for deployment, and enhancing insights for effective analytics solutions.
Overall, leveraging supply chain analytics through portfolio projects can showcase expertise and creativity in applying data-driven solutions to real-world challenges.
The article encourages readers to engage with the author's content, use the provided resources to enhance their skills, and contribute to the analytics community.
Building a strong portfolio in supply chain analytics can open doors to exciting career opportunities and enable individuals to make a tangible impact in the industry.

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Idownloadblog

372

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g1lbertJB untethered jailbreak for iOS 5.0-6.1.2 updated with support for Windows machines

g1lbertJB is an untethered jailbreak that supports iOS 5.0-6.1.2.
The latest update adds official support for Windows machines.
It is still actively maintained and has bug fixes for Linux builds.
g1lbertJB allows jailbreaking iPhone 3GS, 4, and 4S models.

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Medium

260

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Codeium Windsurf: The AI-Powered IDE That Supercharges Your Coding!

Codeium Windsurf is an AI-powered IDE that enhances coding experience.
It offers smart code suggestions, real-time assistance, and advanced autocompletion.
Users can collaborate with AI or let it handle complex tasks autonomously.
The IDE is available for Windows, Mac, and Linux and can be configured with settings from other IDEs like VS Code.

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Medium

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Best apps for the month — April 2025

Superlist is an iOS app that offers efficient task management and to-do list features.
Quizlet is an iOS app focused on flashcard-based learning, offering a large database of existing flashcard sets and various types of tests.
Pushbullet is a popular Android app for communicating between devices, enabling file sharing, notification mirroring, and messaging.
Moises is a creative app that allows users to extract or eliminate vocals and instruments from any song, offering unique possibilities for musicians and music enthusiasts.

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Dev

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Introducing HTML++ – The Future of Web Development

HTML++ is introduced as a full-stack HTML programming language.
HTML++ aims to simplify web development by eliminating the need for other languages such as JavaScript and CSS.
Features of HTML++ include AI-driven code generation, blockchain-powered forms, and AI-powered debugging.
The language incorporates
elements and offers a low-code-no-code development approach.

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Dev

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Daily JavaScript Challenge #JS-140: Binary Gap Length

The challenge is to determine the length of the longest sequence of consecutive zeros in the binary representation of a given positive integer.
The sequence should be surrounded by ones at both ends.
Developers are encouraged to write a JavaScript function to solve this challenge.
The challenge difficulty is medium.

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Spring

272

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This Week in Sprng - April 1st, 2025

Spring Boot 1.0 celebrates its 11th anniversary on April 1st.
AWS and Spring AI collaborate on new MCP integrations.
A Bootiful Podcast discusses build packs, production, Docker, and more.
Various updates and contents related to Spring and Java ecosystem.

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Medium

188

Tracking Laps with UWB and Raspberry Pi — My Custom Swim Timer Project

The author developed a custom swim timer project using UWB and Raspberry Pi.
The goal was to create a portable, affordable, and wireless system to track and improve swimming performance.
The project involved learning about circuits, batteries, soldering, power limits, wireless communication, and timing accuracy.
The author plans to share detailed logs, videos, and tutorials for others to follow along or build their own version.

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Medium

376

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Life and the Dual Sheet Model in Python

The article discusses a model known as the Dual Sheet Model (DSM) implemented in Python, analyzing the universe's expansion and growth.
Real-world data on redshift (z), stretchiness (w), growth speed (H), and possible errors are provided for comparison in the DSM.
Simulation equations and events are defined to track the evolution of fields, energy, growth rates, and quantum fluctuations over time.
The DSM simulates how each 'sheet' in the model grows, influenced by field strengths, matter, antimatter, and quantum effects.
Model observables like redshift, stretchiness, growth speed, entropy, and life potential are calculated to assess the universe's conditions for life.
A method to compare the DSM with real data using a chi-squared metric is presented, finding the best parameters for the model.
Visualization of the model versus real data is shown through plots of stretchiness, growth speed, matter-antimatter balance, entropy, and life potential over time.
The article concludes by exploring the potential emergence of life based on the model's predictions and analyzing the conditions for life in the evolving universe.

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Idownloadblog

236

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Nugget updated to v5.0.3 with Windows-oriented fixes following v5.0.2 over the weekend

Nugget, an iPhone customization utility, received updates with Windows-oriented fixes.
Version 5.0.2 introduced iOS 16 support, fixed issues, and improved compatibility.
Version 5.0.3 fixed errors and issues specifically for Windows users.
Nugget is now the recommended version for all users, especially on Windows machines.

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Dev

356

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What is an algorithm really?

An algorithm is essentially any process that leads to a solution, such as making coffee or solving a math problem.
In computer science, an algorithm is a sequence of instructions that tells a computer how to solve a problem.
The term 'algorithm' originated from the name of a 9th-century Persian mathematician, Al-Khwarizmi.
Algorithms are crucial in computer science due to the need to provide machines with explicit step-by-step instructions.
Algorithms exist in various forms, like greedy algorithms, divide and conquer, dynamic programming, and backtracking.
Algorithms must have a clear endpoint to avoid infinite loops and ensure efficient operation.
Some algorithms provide approximate solutions due to complexities, time constraints, and the nature of certain problems.
Designing algorithms involves deeply understanding the problem, defining inputs and outputs, handling constraints and edge cases, choosing the right technique, developing the algorithm step-by-step, and testing and optimizing it.
Algorithms are omnipresent in both computer science and daily life, guiding processes and decision-making.
The human brain's algorithms showcase incredible real-time decision-making capabilities that surpass even the fastest computer programs.

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Dev

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React API design questions - from a beginner

Beginner in React raises questions regarding the naming convention of the 'class' attribute and the distinction of handling 'children'
Question 1: Is it necessary to rename the 'class' attribute to 'className' in React JSX?
Question 2: Why does React handle 'children' differently from other props?
The beginner seeks further information and links to discussions related to these topics.

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