Skip to main content

Python: Algoritmos e estruturas de dados


 São tópicos fundamentais para qualquer programador e é muito popular entre os usuários Python.

Vamos começar com uma visão geral de algoritmos e estruturas de dados.

Algoritmos

Um algoritmo é um conjunto de instruções passo a passo para resolver um problema específico. Em programação, usamos algoritmos para manipular dados, realizar cálculos complexos e muito mais. Alguns exemplos de algoritmos comuns incluem algoritmos de ordenação (como quicksort e mergesort) e algoritmos de busca (como busca binária).

Aqui está um exemplo simples de um algoritmo em Python - um algoritmo de busca binária:

```python

def busca_binaria(lista, item):

    baixo = 0

    alto = len(lista) - 1


    while baixo <= alto:

        meio = (baixo + alto) // 2

        chute = lista[meio]

        if chute == item:

            return meio

        if chute > item:

            alto = meio - 1

        else:

            baixo = meio + 1

    return None

```

Estruturas de Dados

As estruturas de dados são formas de organizar e armazenar dados para que possam ser usados eficientemente. Python tem várias estruturas de dados embutidas, como listas, tuplas, dicionários e conjuntos.

Aqui está um exemplo de como você pode usar um dicionário em Python para armazenar e acessar dados:

```python

meu_dicionario = {

    "nome": "João",

    "idade": 30,

    "cidade": "Rio de Janeiro"

}


print(meu_dicionario["nome"])  # Saída: João

```

Espero que isso ajude a esclarecer o que são algoritmos e estruturas de dados em Python! :)

Comments

Assuntos mais vistos

Adaptive Refresh Rate Displays: Intelligent Smoothness That Saves Battery

Smartphone displays have come a long way in recent years, and one of the most innovative technologies is adaptive refresh rate. This feature allows the display to automatically adjust the number of times it refreshes per second, offering a smoother user experience while also saving battery. How Do Adaptive Refresh Rate Displays Work? The refresh rate, measured in Hertz (Hz), indicates how many times the display is refreshed per second. The higher the refresh rate, the smoother the transition between images, which is especially important in games and videos. However, higher refresh rates consume more power. Adaptive refresh rate displays solve this problem by dynamically adjusting the refresh rate according to the content displayed. In situations that require more fluidity, such as games and videos, the display operates at a higher refresh rate (for example, 120 Hz). In static situations, such as reading text or browsing the web, the refresh rate is reduced (for example, 60 Hz or less),...

From Zero to AdSense: A Complete Guide to Monetizing Your Website

Google AdSense is one of the most popular ways to monetize a website, allowing you to display relevant ads to your visitors and earn money from it. However, to be approved by AdSense and keep your account active, you need to follow some guidelines and best practices. This complete guide will teach you the step-by-step process to create and maintain a website that meets the AdSense requirements. 1. Planning and Creating the Website 1.1 Choose a Profitable Niche Niche research: Identify a niche market with high demand and low competition. Use tools like Google Trends and Keyword Planner to find relevant topics with good search volume. Passion and knowledge: Choose a niche that you are an expert in and that motivates you to create quality content. 1.2 Domain Registration and Hosting Domain name: Choose a short, easy-to-remember domain name that is relevant to your niche. Hosting: Choose a reliable and high-performance hosting service. 1.3 Website Design and Structure Responsive Layout: Us...

Creutzfeldt-Jakob Disease (CJD): A Neurodegenerative Conundrum

Creutzfeldt-Jakob disease (CJD) is a rare and fatal neurodegenerative disease caused by prions, infectious proteins that affect the brain. CJD causes progressive dementia, loss of motor coordination, and eventually death. The variant form of CJD (vCJD), linked to the consumption of beef contaminated with bovine spongiform encephalopathy (BSE), known as "mad cow disease", raised great concern in the 1990s. What are Prions? Prions are infectious proteins that cause neurodegenerative diseases by causing normal brain proteins to fold abnormally. This abnormal folding leads to the formation of protein aggregates that damage brain cells, causing degeneration of brain tissue. Forms of CJD CJD can manifest itself in different ways: Sporadic CJD (aJCJD): The most common form, accounting for about 85% of cases. AJCJD occurs when the normal prion protein spontaneously folds abnormally, with no known cause. Familial CJD (fCJD): An inherited form of the disease, accounting for about 10-15...