Understanding 3D Arrays in R: A Comprehensive Guide to Creating and Manipulating Multi-Dimensional Data Structures

Understanding Character vs Numeric Values in R: How to Pass a Numeric Value as a Character to a Function Correctly

Mastering Oracle's JSON Functionality: Filtering Rows Based on Array Elements

Understanding NumPy's `np.random.choice` Functionality: A Comprehensive Guide

Recursive Queries in SQLite: A Deep Dive

Converting a 2D DataFrame into a 3D Array in R: A Practical Guide to Dimensional Re-Shaping

How to Increase the Size of a 2D Array in R: A Step-by-Step Guide

Here's how you can solve the practice exercises:

Creating a DataFrame with Model Names and Scores: A Step-by-Step Guide

Iterating Over Rows in Pandas Dataframe to Find Values in Other File and Extract Index for Matching Filenames in Python