This course provides the best approach to learn Rust, starting from the basics and advancing to complex topics. It is an introduction to Rust for beginners aspiring to become skilled Rust developers.

The word is out: developers love Rust. It's rapidly becoming a top choice for systems and embedded programmers, and the demand for Rust developers is rising. Known for its performance, reliability, and productivity—especially compared to C++—Rust is a powerful language to master. If you're a systems developer, it's a fantastic next step.
In this course, you'll learn Rust by actively engaging in coding. You’ll start with a simple "Hello world" program and cover essential concepts like arrays, strings, vectors, enums, structures, traits, generics, functions, and logic. You'll also dive into advanced topics such as lifetime and memory management.
By the end of this course, you'll have a solid foundation in Rust programming and be well-prepared to take on more advanced concepts, making it ideal for Rust beginners looking to become proficient Rust developers.

Rust Programming Language

# Problem Statement
The task is to modify the given function `arr_square()` to use loops to iterate over an array, which is declared within the function, and replace all of its elements by their squares.

## Test Sample

An array of integers declared in the funtion:

```
[1, 2, 3, 4, 5]
```

## Output
The function should return the following array:
``` 
[1, 4, 9, 16, 25]
```

# Coding Exercise

Write your code below. It is recommended​ that you try solving the exercise yourself before viewing the solution.

> **Note:** There is an `arr_square` function given in the code for testing purposes. Do not modify it.


Good luck! 🤞



This challenge tests your knowledge of functions and arrays.

Introduction to Rust

Rust Programs

Rust Variables

Rust Data Types

Rust Operators

Rust if and if let Expressions

Rust Loops

Rust Functions

Rust Strings

Rust Vectors

Rust Structs

Conclusion

Rust Exam

Challenge 2: Return an Array of Squares

Problem Statement