邻区转换——移动通信小工具，邻区行列转换，日常使用频率很高。-O-zone conversion- mobile communications gadget, the ranks of neighborhood transformation, high frequency of daily use.

C语言的一些简单经常用到的小工具程序段，比如说冒泡排序，回文数，素数分解等等。-Some of the C language simple and often use the gadget program segments, such as bubble sort, palindrome number, prime number decomposition and so on.