Java 实现 Md5加密、Des加密的例子，另外还有一个Diff比较两个java数组的有何不同的例子。

对于给定的差分约束，计算满足差分约束的变量最大值与最小值之差的最小值。-For a given differential constraints, the calculation to satisfy the differential constraint variable maximum and minimum values ​ ​ of the difference between the minimum.

diff查找出两文本的异同点 也可以进行2次开发进行异同筛选-diff can also find out the similarities and differences between the two text 2 development, the similarities and differences between screening