Simple bubble sort for numbers.

bubble_sort.rb

# Simple bubble sort for numbers

def bubble_sort(array_to_sort)
    swap = true # Track whether swap has occurred
    
    while swap
        (0... array_to_sort.length - 1).each do |x|
            # If we detect disorder...
            if array_to_sort[x] > array_to_sort[x + 1]
                # Perform a simple 3-step swap
                temp = array_to_sort[x + 1]
                array_to_sort[x + 1] = array_to_sort[x]
                array_to_sort[x] = temp
            
                swap = true
            end
        end
    end
    
    return array_to_sort # At this point it's sorted
end

# EXAMPLE
bubble_sort([1,3,5,2,4])

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