c++哈夫曼树实现-创新互联
#include
using namespace std;
struct Tpoint {
int weight;
int lchild;
int rchild;
int parent;
};
void INIT(Tpoint* T,int n) { //初始化哈夫曼树
for (int i = 1; i<= 2 * n - 1; i++) {
T[i].lchild = 0;
T[i].rchild = 0;
T[i].parent = 0;
}
int weight;
for (int i = 1; i<= n; i++) {
cin >>weight;
T[i].weight = weight;
}
}
void Show(Tpoint* T,int n) { //展示二叉树
for (int i = 1; i<= 2 * n - 1; i++) {
cout<< i<<"\t"<
}
void SelectMin(Tpoint* T, int n, int& m1, int& m2) { //找到i之前且双亲为0的最小两个结点
for (int i = 1; i<= n; i++) {
if (T[i].parent != 0)
continue;
if (T[m1].weight >T[i].weight)
m1 = i;
}
for (int i = 1; i<= n; i++) {
if (T[i].parent != 0 || i == m1)
continue;
if (T[m2].weight >T[i].weight)
m2 = i;
}
}
void BuildHuffman(Tpoint* T, int n) { //生成huffman树
int m1=1, m2;
for (int i = n + 1; i<= 2 * n - 1; i++) {
m1 = 0, m2 = 0;
SelectMin(T, i - 1, m1, m2);
T[m1].parent = i ;
T[m2].parent = i ;
T[i].lchild = m1;
T[i].rchild = m2;
T[i].weight = T[m1].weight + T[m2].weight;
}
}
int main() {
Tpoint T[100];
T[0].weight = 1000;
int n;
cout<< "输入哈夫曼树叶子节点数";
cin >>n;
cout<< endl;
INIT(T,n);
BuildHuffman(T, n);
Show(T,n);
}
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