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Inorder_of_Tree_Iterative.cpp
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Inorder_of_Tree_Iterative.cpp
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#include <bits/stdc++.h>
using namespace std;
struct node
{
int data;
struct node *left, *right;
};
struct node* newNode(int data)
{
struct node* node = (struct node*)malloc(sizeof(struct node));
node->data = data;
node->left = NULL;
node->right = NULL;
return(node);
}
void inorder(struct node* root)
{
stack <node*> s;
struct node *temp = root;
while(temp != NULL || !s.empty())
{
while(temp != NULL)
{
s.push(temp);
temp = temp->left;
}
temp = s.top();
s.pop();
cout<<temp->data<<" ";
temp = temp->right;
}
}
/*
// Recursive Way:
void inorder(struct node* root)
{
if(root == NULL)
return;
inorder(root->left);
cout<<root->data<<" ";
inorder(root->right);
}
*/
int main()
{
struct node* root = newNode(1);
root->left = newNode(2);
root->right = newNode(3);
root->left->left = newNode(4);
root->right->left = newNode(5);
root->right->right = newNode(6);
root->right->left ->left = newNode(7);
root->right->left ->right = newNode(8);
cout<<"In-order traversal is : ";
inorder(root);
return 0;
}