Learn programming with code examples for and SQL. Explore topics like substring extraction, array merging, and database queries. Study SQL joins, sorting grouped data, and data types. Access ready-to-use code from books and trusted online sources.
PTCORP TRADING SERVICES AND TECHNOLOGY JOINT STOCK COMPANY
Practice quizzes and track progress
Practice multiple-choice questions from subjects like Math, Physics, Chemistry, Literature, History, and more. Customize difficulty levels and track progress over time. Receive instant feedback after each answer.
Create and edit digital paintings using pencil tools, brushes, and smudge features. Fill areas with color, add text, and draw shapes like lines and circles.
Adjust audio frequencies with a 10-band covering 60Hz to 16kHz. Apply real-time adjustments for bass, mids, and treble. Visualize audio with dynamic graphics. Import and play local files or stream audio directly.
Users can book home test appointments and schedule phone consultations. They can ask medical questions and receive health advice. The allows free installation and provides access to reliable healthcare services anytime and anywhere.
Write and execute code directly on iOS devices. Compile and run code snippets instantly. Access a built-in virtual machine. View and debug output in real time. Learn programming concepts through hands-on practice.
Through interactive gameplay four options: English, Chinese, Japanese, and Korean. Complete challenges to improve vocabulary and grammar. Track progress and receive feedback. Practice speaking and listening built-in exercises.
Learn coding in Roblox Studio using programming. Complete structured lessons with step-by-step tutorials. Practice with coding exercises and quizzes. View syntax-highlighted code examples. Track progress through interactive modules.