list.median = function()
    self.sort
    m = floor(self.len/2)
    if self.len % 2 then return self[m]
    return (self[m] + self[m-1]) * 0.5
end function

print [41, 56, 72, 17, 93, 44, 32].median
print [41, 72, 17, 93, 44, 32].median