打印树


  利用了树的中序遍历,不过是从右边到左边的中序遍历。
#include <iostream.h>
#include 
"tree.h"

template
<class NODETYPE>
void outputTree(TreeNode<NODETYPE> *ptr,int totalSpaces)
{
    
if(ptr!=0)
    
{
        outputTree(ptr
->rightPtr,totalSpaces+5);
        
for(int i=0;i<totalSpaces;i++)
            cout
<<' ';
        cout
<<ptr->getData()<<endl;
        outputTree(ptr
->leftPtr,totalSpaces+5);

    }

}



int main()
{

     Tree<int> intTree;
     
int intVal;

    cout
<<"Enter 15 integer valuse\n";
    
for(int i=0;i<15;i++)
    
{
        cin
>>intVal;
        intTree.insertNode(intVal);
    }


    outputTree(intTree.rootPtr,
0);

    
return 0;
}
             
运行结果:
              99
          97
               92
     83
               72
          71
               69
49
               44
          40
               32
     28
               19
          18
               11
原文地址:https://www.cnblogs.com/junnyfeng/p/192929.html