摘要: 例如:lst a [,1] [,2] [,3] [,4] [,5] [,6][1,] 5 8 1 4 13 7[2,] 8 9 2 5 0 21[3,] 6 12 3... 阅读全文
posted @ 2017-02-25 20:32 banlucainiao 阅读(59) 评论(0) 推荐(0)