奴隶_wc的专栏

好久没好好AC了， 这学期的数据结构也没好好学。恶补ing... 题目大意：告诉二叉树的先序序列和中序序列，求后序序列。思路：先序建立二叉链表，再后续遍历二叉树。 #include using namespace std;typedef struct Binary{ int data; Binary *lchild, *rchild;

Huffman编码， 题意：给你一个序列，output the length in bits of the 8-bit ASCII encoding, the length in bits of an optimal prefix-free variable-length encoding, and the compression ratio accurate to one decimal poi