names.length 和 names[].length names.length是names数组的长度(大)names[i].length是names数组中包含数组的长度（小）String[][] names={{"tom","jack","mike"},{"zhangsan","lisi","wangwu"}}; names.length 长度有2,{"tom","jack","m Other 2023-10-02 45 点赞 0 评论 68 浏览
![names.length 和 names[].length](/uploads/reation/bcimg14.png)
