Benchmark 100,000 items converting string to array ruby

string_to_array.rb

require "benchmark"

puts Benchmark.measure {
  100000.times do
    "[1,2,3,4]"[1..-2].split(",")
  end
}

puts Benchmark.measure {
  100000.times do
    "[1,2,3,4]".gsub("[", "").gsub("", "]").split(",")
  end
}