Ruby Challenge - Two Joggers

two_joggers.rb

# Description
# Bob and Charles are meeting for their weekly jogging tour. They both start 
# at the same spot called "Start" and they each run a different lap, which 
# may (or may not) vary in length. Since they know each other for a long time 
# already, they both run at the exact same speed.

# Task
# Your job is to complete the function nbrOfLaps(x, y) that, given the length 
# of the laps for Bob and Charles, finds the number of laps that each jogger 
# has to complete before they meet each other again, at the same time, at the start.

# The function takes two arguments:

# The length of Bob's lap (larger than 0)
# The length of Charles' lap (larger than 0)
# The function should return an array containing exactly two numbers:

# The first number is the number of laps that Bob has to run
# The second number is the number of laps that Charles has to run

def nbr_of_laps(x, y)
  lcm = [x,y].reduce(:lcm)
  [lcm/x,lcm/y]
end

two_joggers_spec.rb

require_relative '../two_joggers.rb'

describe 'two joggers' do
  it 'returns the correct number of laps per jogger' do
    expect(nbr_of_laps(3, 5)).to eql [5, 3]
  end

  it 'returns the correct number of laps per jogger' do
    expect(nbr_of_laps(4, 6)).to eql [3, 2]
  end

  it 'returns the correct number of laps per jogger' do
    expect(nbr_of_laps(5, 5)).to eql [1,1]
  end
end