lua学习之循环打印九九乘法表

--第4题  输出99乘法表
function PrintMulitiplyTable()
    for i = 1, 9 do
        local res = {}
        local str = ""
        for j = 1, i do
            res[j] = i * j
            str = table.concat(res, " ")
        end
        print(str)
    end
end

PrintMulitiplyTable()