In the first lesson in hands-on brain, mainly to solve the problem of the four operations.
The first one is the first four operations subject 30, in less than 100. This problem needs to be controlled and the range of random number generation results in a range of less than 100 can.
The first improvement is 3:00: a to avoid repetition, the number of two custom, three parameter control result. Repeat Arrays can be used to find it, it is necessary to customize control cycles before the cycle, the results of control if required after each determination results.
The second improvement is the supporting linear equations, look, root, and can be customized questions. First set of linear equations, is necessary to determine b * b-4a * c> 0, and determines whether the output result, the need for customized data selection questions, the need for data to be processed.
The third improvement is the title can be done online, the Internet achieve the above functions, and can modify real-time, access to progress. That I have not learned, but I think it should be used in a lot of databases and other knowledge.