#include<bits/stdc++.h>
using namespace std;
struct BinaryTree{
int data;
BinaryTree *left;
BinaryTree *right;
BinaryTree(int _data) : data(_data), left(nullptr), right(nullptr) {}
};
BinaryTree* createTree(BinaryTree* root, int data) {
if(root == nullptr){
return new BinaryTree(data);
}
if(root->data < data){
root->left = createTree(root->left, data);
}
else {
root->right = createTree(root->right, data);
}
return root;
}
void inorder(BinaryTree *root) {
if(root == nullptr) {
return;
}
inorder(root->left);
cout << root->data << ' ';
inorder(root->right);
}
void postorder(BinaryTree *root) {
if(root == nullptr) return;
postorder(root->left);
postorder(root->right);
cout << root->data << ' ';
}
int main() {
BinaryTree* root = nullptr;
bool flag = true;
while(1) {
cout << "1. Insert noden";
cout << "2. Postorder traversaln";
cout << "3. Inorder traversaln";
cout << "4. Exitn";
int choice;
cin >> choice;
switch(choice) {
case 1:
cout << "Enter the element you want to insert: ";
int data;
cin >> data;
if(flag) {
root = createTree(root, data);
flag = false;
}
else createTree(root, data);
break;
case 2:
inorder(root);
cout << endl;
break;
case 3:
postorder(root);
cout << endl;
break;
case 4:
return 0;
default:
cout << "Invalid Option Chosenn";
break;
}
}
return 0;
}
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