Contents

local function to_decimal(digits, base)
  local decimal = 0
  for i, digit in ipairs(digits) do
    assert(digit >= 0, 'negative digits are not allowed')
    assert(digit < base, 'digit out of range')
    decimal = decimal + digit * (base ^ (#digits - i))
  end
  return math.floor(decimal)
end

local function from_decimal(decimal, base)
  local digits = {}
  while decimal > 0 do
    table.insert(digits, 1, (decimal % base))
    decimal = math.floor(decimal / base)
  end
  return #digits > 0 and digits or { 0 }
end

return {
  convert = function(from_digits, from_base)
    return {
      to = function(to_base)
        assert(from_base > 1, 'invalid input base')
        assert(to_base > 1, 'invalid output base')
        local decimal = to_decimal(from_digits, from_base)
        return from_decimal(decimal, to_base)
      end
    }
  end
}

Version data entries

396 entries across 396 versions & 1 rubygems

Version	Path
trackler-2.2.1.180	tracks/lua/exercises/all-your-base/example.lua
trackler-2.2.1.179	tracks/lua/exercises/all-your-base/example.lua
trackler-2.2.1.178	tracks/lua/exercises/all-your-base/example.lua
trackler-2.2.1.177	tracks/lua/exercises/all-your-base/example.lua
trackler-2.2.1.176	tracks/lua/exercises/all-your-base/example.lua
trackler-2.2.1.175	tracks/lua/exercises/all-your-base/example.lua
trackler-2.2.1.174	tracks/lua/exercises/all-your-base/example.lua
trackler-2.2.1.173	tracks/lua/exercises/all-your-base/example.lua
trackler-2.2.1.172	tracks/lua/exercises/all-your-base/example.lua
trackler-2.2.1.171	tracks/lua/exercises/all-your-base/example.lua
trackler-2.2.1.170	tracks/lua/exercises/all-your-base/example.lua
trackler-2.2.1.169	tracks/lua/exercises/all-your-base/example.lua
trackler-2.2.1.167	tracks/lua/exercises/all-your-base/example.lua
trackler-2.2.1.166	tracks/lua/exercises/all-your-base/example.lua
trackler-2.2.1.165	tracks/lua/exercises/all-your-base/example.lua
trackler-2.2.1.164	tracks/lua/exercises/all-your-base/example.lua
trackler-2.2.1.163	tracks/lua/exercises/all-your-base/example.lua
trackler-2.2.1.162	tracks/lua/exercises/all-your-base/example.lua
trackler-2.2.1.161	tracks/lua/exercises/all-your-base/example.lua
trackler-2.2.1.160	tracks/lua/exercises/all-your-base/example.lua