Lua乘法口诀表：双层循环的上三角打印

local function table9()
    for i = 1, 9 do
        local row = {}
        for j = 1, i do
            row[#row + 1] = j .. "x" .. i .. "=" .. i * j
        end
        print(table.concat(row, "  "))
    end
end

local function table9Text()
    local out = {}
    for i = 1, 9 do
        local row = {}
        for j = 1, i do
            row[#row + 1] = j .. "x" .. i .. "=" .. i * j
        end
        out[#out + 1] = table.concat(row, "\t")
    end
    return table.concat(out, "\n")
end
local p = getplayerbyname("edu01")
sendmsg(p, 1, "全表 45 项，文本 " .. #table9Text() .. " 字节")