操作系统磁盘空间分配与回收，用户可以定义柱面数，扇区数，磁道数，然后用一个二维数组存放相对应用户分配的相对物理块号，即数组weishi[][]。程序中定义内部类记录进程，当输入相应的用进程名时，给相应分配为物理块，记录盘块数据。当回收用户盘块时，只需输入进程名，即可回收其占用的盘块并置位示图相应号为0。-Operating system disk space allocation and recovery, users can define the number of cylinders, sectors, track number, and then stored in a two-dimensional array that corresponds to the user the relative distribution of its physical block, that is, the array weishi [][]。 Procedures defined in the internal records of the process category, when using the process of entering the appropriate name for the corresponding physical block distribution, data recording disk block. When the recovery disk block users, simply enter the process name, you can recall its occupation and ownership of the disk block diagram showing the corresponding bit number is 0.