find the least common multiple of a list of numbers in ruby

One way to find the least common multiple of a list of numbers in Ruby is to use the built-in lcm method provided by the Integer class. However, this method only works for finding the LCM of two numbers at a time. To find the LCM of a list of numbers, we need to implement a custom algorithm that uses the lcm method repeatedly.

main.rb
# Define a method to find the LCM of a list of numbers
def find_lcm(numbers)
  # Use the first number as the initial candidate for LCM
  lcm = numbers.first
  numbers.each do |num|
    # Use the lcm method to find the LCM of the current number and the current LCM candidate
    lcm = lcm.lcm(num)
  end
  lcm
end
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In this code, we define a method find_lcm that takes an array of numbers as input. We use the first method to get the first number in the array, and assign it to the variable lcm. We then loop through the rest of the array using each, and at each iteration we call the lcm method on the current number and the current LCM candidate, and assign the result back to lcm. At the end of the loop, lcm will contain the least common multiple of all the numbers in the array.