Project Euler 4

Project Euler 4

def palindrome?(a)
  a.to_s == a.to_s.reverse
end

def dev_by_3digit?(a)
  999.downto(100) do |i|
    if a % i == 0 && a / i < 999
      return true
    end
  end
  false
end

largest = 999 * 999

while true do
  if palindrome?(largest)
    if dev_by_3digit?(largest)
      break
    end
  end
  largest -= 1
end

puts largest