代码的功能：用C语言实现归并排序的算法，代码中带有详细的注解，十分有利于阅读和改进来应用于自己的算法。归并排序法是将两个有序表合并成一个新的有序表，即把待排序序列分为若干个子序列，每个子序列是有序的,然后再把有序子序列合并为整体有序序列。-The functionality of the code: merge sort algorithm, implemented in C code with detailed comments, and very conducive to reading and improvements used in the algorithm. Algorithms: merge sort method is the two ordered tables merged into a new ordered table, the collating sequence to be divided into several sub-sequences, each sub-sequence is ordered. And then ordered sub-sequence merger as a whole and orderly sequence.