数据结构--合并排序法.基本是将两笔已排序的数据合并并进行排序，如果所读入的数据尚未排序，可以先利用其它的排序方式来处理这两笔资料，然后再将排序好的这两笔数据合并。

只要将所有的数字不断的分为两个等分，直到最后剩一个数字为止，然后再反过来不断的合并。

-Data structure- merge sort method. Is basically the two pens had been sorted and sort data consolidation, if the read data has not yet sorted, you can first use of other ways to deal with the sort of information from these two, and then a good sort data merge these two pens. As long as all the numbers are divided into two equal portions continuously until the last left a number so far, and then in turn continue to merger.