Lua星号金字塔：居中三角的空格规律

local function pyramid(n)
    for i = 1, n do
        print(string.rep(" ", n - i)
            .. string.rep("*", 2 * i - 1))
    end
end

local function pyramidText(n)
    local out = {}
    for i = 1, n do
        out[#out + 1] = string.rep(" ", n - i)
            .. string.rep("*", 2 * i - 1)
    end
    return table.concat(out, "\n")
end
local p = getplayerbyname("star01")
sendmsg(p, 1, "5 层共 " .. 5 * 5 .. " 颗星")
sendmsg(p, 1, pyramidText(3))