Calculating the value of Pi in Julia - Google Code-In

main.jl

# Author: Ruyi Li (weCryOpen)

function mypi(n::Int)::Float
  total_sum::Float = 0
  for i = 1:n
    total_sum += 1 / (i * i)
  end
  (total_sum * 6) ^ 0.5
end

recursive_version.jl

# Author: Ruyi Li (weCryOpen)

function approximate_pi(accuracy)
  function helper(acc)
    acc == 1 && return 1
    1 / acc ^ 2 + helper(acc - 1)
  end
  (helper(accuracy) * 6) ^ 0.5
end