Reverse an ipairs table in Lua (not clever O(n) could be O(n/2) with swapping)

reverseTable.lua

--
-- Reverses an ipairs table
--
--local r = ReverseTable({'a', 'b', 'c'})
--for k, v in ipairs(r) do
--    print(k, v)
--end
--
--
function ReverseTable(t)
    local reversedTable = {}
    local itemCount = #t
    for k, v in ipairs(t) do
        reversedTable[itemCount + 1 - k] = v
    end
    return reversedTable
end

function table.reverse(t)
	local len = #t
	for i = len - 1, 1, -1 do
		t[len] = table.remove(t, i)
	end
end

or modified ipairs-function

function rpairs(t)
	return function(t, i)
		i = i - 1
		if i ~= 0 then
			return i, t[i]
		end
	end, t, #t + 1
end