Finding Closest Number In Table

[IWacky_Galaxy (IWacky)]

I feel stupid for asking this but rn its like 3 in the morning and I just want to be over with this.
Basically im making something which checks a table to see which number in the table is the closest to the mouses z position. I have it working with negative values but positives are a no go and im not sure how to fix this.

Code:

local conenct4Plane = Instance.new("Part")
local mouseHoverTable = {}
for i,x in gridTable do
	local z = x.Position.Z
	table.insert(mouseHoverTable,z)
end

local closestZ = math.huge
for _,position in mouseHoverTable do
	if math.abs(mouse.Hit.Position.Z-2) < math.abs(closestZ) then
		closestZ = position
	end
end
mousePart.Position = Vector3.new(connect4Plane.Position.X-4,connect4Plane.Position.Y,closestZ)

if I missed anything sorry!

[MysteryX2076 (DrMystery)]

Set closetZ to 0, math.huge is infinite so nothing can be greater than it

[SeargentAUS (Seargent)]

They want to find the closest, not the highest. math.huge makes sense for them to use in this case.

[IWacky_Galaxy (IWacky)]

Woken up now and still cant figure it out.

[BobbieTrooper (Jared)]

Try

local connect4Plane = Instance.new("Part")
local mouseHoverTable = {}

for i, x in gridTable do
    local z = x.Position.Z
    table.insert(mouseHoverTable, z)
end

function findClosestNumber(number, table)
    local closestDifference = math.huge
    local closestNumber = nil

    for _, value in pairs(table) do
        local difference = math.abs(number - value)
        if difference <= closestDifference then
            closestDifference = difference
            closestNumber = value
        end
    end

    return closestNumber
end

local closestZ = findClosestNumber(mouse.Hit.Position.Z, mouseHoverTable)
mousePart.Position = Vector3.new(connect4Plane.Position.X - 4, connect4Plane.Position.Y, closestZ)

[2112Jay]

Loop comparison may be a bit off vs comparing the absolute differences between…

local connect4Plane=Instance.new("Part")
local mouseHoverTable={}

for i,x in gridTable do 
	local z=x.Position.Z
	table.insert(mouseHoverTable,z)
end

local closestZ=math.huge
for _,position in mouseHoverTable do
	if math.abs(mouse.Hit.Position.Z-position)<math.abs(mouse.Hit.Position.Z-closestZ)then
		closestZ=position
	end
end

mousePart.Position=Vector3.new(connect4Plane.Position.X-4,connect4Plane.Position.Y,closestZ)