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traversal.cpp
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traversal.cpp
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#include<iostream>
using namespace std;
class Node{
public:
int data;
Node* left;
Node* right;
Node(int val)
{
data = val;
left = NULL;
right = NULL;
}
};
void preOrder(Node* root)
{
if(root==NULL)
return;
cout<<root->data<<" ";
preOrder(root->left);
preOrder(root->right);
}
void inOrder(Node* root)
{
if(root==NULL)
return;
inOrder(root->left);
cout<<root->data<<" ";
inOrder(root->right);
}
void postOrder(Node* root)
{
if(root==NULL)
return;
postOrder(root->left);
postOrder(root->right);
cout<<root->data<<" ";
}
int main()
{
Node* root = new Node(1);
root->left = new Node(2);
root->right = new Node(3);
root->left->left = new Node(4);
root->left->right = new Node(5);
root->right->left = new Node(6);
root->right->right = new Node(7);
preOrder(root);
cout<<endl;
inOrder(root);
cout<<endl;
postOrder(root);
cout<<endl;
return 0;
}