# 1. Introduction

Sorting is a fundamental operation in computer science and is often required in various programming tasks. Ruby offers built-in methods to sort arrays in both ascending and descending order. In this tutorial, we will demonstrate how to sort an array in Ruby.

# 2. Program Steps

1. Define or initialize an array.

2. Use the sort method to sort the array in ascending order.

3. Use the sort { |a, b| b <=> a } method to sort the array in descending order.

4. Print the sorted arrays to the console.

# 3. Code Program

``````# Define an unsorted array
numbers = [65, 25, 30, 10, 50, 45]
# Sort the array in ascending order
sorted_ascending = numbers.sort
# Sort the array in descending order
sorted_descending = numbers.sort { |a, b| b <=> a }
# Print the sorted arrays
puts "Original Array: #{numbers}"
puts "Sorted in Ascending Order: #{sorted_ascending}"
puts "Sorted in Descending Order: #{sorted_descending}"
``````

### Output:

```Original Array: [65, 25, 30, 10, 50, 45]
Sorted in Ascending Order: [10, 25, 30, 45, 50, 65]
Sorted in Descending Order: [65, 50, 45, 30, 25, 10]
```

### Explanation:

1. numbers = [65, 25, 30, 10, 50, 45]: We initialize an unsorted array named numbers.

2. numbers.sort: The built-in sort method sorts the array in ascending order by default.

3. numbers.sort { |a, b| b <=> a }: This syntax sorts the array in descending order. The <=> is known as the spaceship operator, which returns -1 if a is less than b, 0 if they're equal, and 1 if a is greater than b. By flipping a and b in the block, we achieve descending order.

4. The sorted arrays are printed to the console.

The built-in sort method in Ruby provides a quick and efficient way to order the elements of an array.