LeetCode： Defanging an IP Address

Question

Given a valid (IPv4) IP address, return a defanged version of that IP address.

A defanged IP address replaces every period “.” with “[.]”.

Example 1:

Input: address = "1.1.1.1"

Output: "1[.]1[.]1[.]1"

Example 2:

Input: address = "255.100.50.0"

Output: "255[.]100[.]50[.]0"

Solution#1

def defang_i_paddr(address)
  s1 = address.split('')
  s1.map { |element|
    if element == "."
      element = "[.]"
    else
      element
    end
  }.join
end

Solution#2

def defang_i_paddr(address)
   address.gsub! '.', '[.]' 
end