Checking if 4 different arrays share the same value

[Gati262 (Gati)]

Let’s say these are the arrays I need to compare

local Array1 = {0, 1, 2, 3, 4}
local Array2 = {0, 2, 3, 4}
local Array3 = {1, 3, 4}
local Array4 = {2, 3, 4}

What I need, it’s have ONLY the values that repeat on all 4 of the arrays, I’ve been trying to figure out how to do it for a while but I have no idea, I’d appreciate some help.

[L3XSC (exerion)]

Just keep doing for loops and checks till all of them share the same values?
Or you can use metatables.

[NotTrulyEpic]

You should find the array with the least amount of arguments, example array 3 or 4, and use table.find(otherArray, number) for each of that array’s number. Example:

local Array1 = {0, 1, 2, 3, 4}
local Array2 = {0, 2, 3, 4}
local Array3 = {1, 3, 4}
local Array4 = {2, 3, 4}

local sharedNumbers = {}
local smallestArray = Array4 -- if needed, use some function to find it but for testing purposes I won't
for _, value in smallestArray do
	local existsIn = 0
	for _, otherArray in {Array1, Array2, Array3} do
		local exists = table.find(otherArray, value)
		if exists then
			existsIn += 1
		end
	end
	if existsIn == #{Array1, Array2, Array3} then
		table.insert(sharedNumbers, value)
	end
end