那位高手帮忙--Huffman编码

//本程序根据26个英文字母出现的频度，得到了它们的一种哈夫曼编码方案
//by jirgal 2005.4.18
#include<iostream.h>
#include<iomanip.h>
#define NUM 26 //字母数
#define TNUM 51 //
#define LTH 15 //编码最大长度

class Node
{
public:
char data;
int weight;
int parent;
int lchild;
int rchild;
};

void main()
{
char ch[NUM]={'a','b','c','d','e','f','g','h','i','j','k','l',
'm','n','o','p','q','r','s','t','u','v','w','x','y','z'};//26个字母

int weit[NUM]={856,139,279,378,1304,289,199,528,627,13,42,
339,249,707,797,199,12,677,607,1045,249,92,149,17,199,8};//出现频率

Node nodes[TNUM]; //用对象数组存储哈夫曼树

int i,j,one,two,a,b;
int hc[NUM][LTH]; //用于存储编码
i