大整数（可高效计算数万位整数）四则运算的实现，采用了高效的9位并行计算。除法的实现更是采用了高效的二分试商-Large integer (which can be tens of thousands of high-performance computing-bit integer) arithmetic to achieve efficient use of parallel computing 9. The division is the adoption of a more efficie

自适应算术编码，可计算输入为数字时的二进制码-Computable input adaptive arithmetic coding, the digital binary code

十进制四则运算计算器，用户输入一串四则运算表达式，系统将其以二叉链表形式存储，并输出先序、中序和后序遍历的结点顺序，最后利用栈计算后缀表达式的值，输出运算结果。-Decimal four arithmetic calculator, the user enters a string of four arithmetic expressions, the system to be stored in the binary tree, and outputs the first sequence,