http://www.cnblogs.com/stephen-liu74/archive/2012/03/20/2407507.html
方式一：key为数字
--~ table={4,5,6,7}
table={}
for i=1,4 do
table[i]=i
end
for i=1,#table do
print(table[i])
end
方式二 key为字符
--~ table={4,5,6,7}
table={a=4,b=5,c=6,d=7}
for key,value in pairs(table) do
print(key,value)
end