My bubble sort

bubble_sort.rb

#!/bin/ruby

require 'json'
require 'stringio'

def count_swaps(sort_me)
    is_sorted = false
    swap_count = 0

    while is_sorted == false
        is_sorted = true
        current_point = 0
        end_point = sort_me.length - 1

        while current_point < end_point  do
            if sort_me[current_point] > sort_me[current_point + 1]
                is_sorted = false
                swap_count += 1
                swap(sort_me, current_point, current_point + 1)
            end
            current_point += 1
        end
        end_point = end_point - 1
    end
    puts "Array is sorted in #{swap_count} swaps."
    puts "First Element: #{sort_me[0]}"
    puts "Last Element: #{sort_me[-1]}"
end

def swap(sort_list, first, second)
    value_first = sort_list[second]
    value_second = sort_list[first]
    sort_list[first] = value_first
    sort_list[second] = value_second
end

n = gets.to_i
a = gets.rstrip.split(' ').map(&:to_i)
count_swaps a