背单词,占用内存小,便捷,很容易上手,用户只需要先添加单词,然后进入背诵单词-Back word memory small, convenient and very easy to use, users just have to add the word, and then enter the word recitation
矩阵转制的问题有多种算法,这是一个基于数据结构的算法,用过就知道其好处了。-matrix conversion of a number of algorithms, which is a data structure based on the algorithm used to know on the merits.