fork download
copy 
  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. struct Node {
  4. 	int data;
  5. 	Node*left;
  6. 	Node*right;
  7. 	Node(int x) {
  8. 		data=x;
  9. 		left=right=nullptr;
  10. 	}
  11. };
  12. Node* insert(Node* root, int x) {
  13. 	if(root==nullptr) return new Node(x);
  14. 	if(x<root->data) root->left=insert(root->left, x);
  15. 	else root->right=insert(root->right, x);
  16. 	return root;
  17. }
  18. void postor(Node* root) {
  19. 	if(root==nullptr) return;
  20. 	postor(root->left);
  21. 	postor(root->right);
  22. 	cout << root->data << " ";
  23. }
  24. int main() {
  25. 	int T;
  26. 	cin >> T;
  27. 	while(T--) {
  28. 		int n;
  29. 		cin >> n;
  30. 		Node* root=nullptr;
  31. 		int a[n];
  32. 		for(int i=0; i<n; i++) {
  33. 			int x;
  34. 			cin >> x;
  35. 			root=insert(root, x);
  36. 		}
  37. 		postor(root);
  38. 		cout << endl;
  39. 	}
  40. }
Success #stdin #stdout 0.01s 5284KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Standard output is empty
https://ideone.com/MwC5SW
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!