fork download
copy 
  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. struct Node {
  5.     int data;
  6.     Node *left, *right;
  7.     Node(int value) {
  8.         data = value;
  9.         left = NULL;
  10.         right = NULL;
  11.     }
  12. };
  13.  
  14. int diameterOpt(Node* root, int* height) {
  15.  
  16.   int lh=0,rh=0;
  17.  
  18.   int ldiameter=0;
  19.   int rdiameter=0;
  20.  
  21.   if(root == NULL)
  22.   {
  23.   	*height =0;
  24.   	return 0;
  25.   }
  26.  
  27.     ldiameter = diameterOpt(root->left,&lh);
  28.     rdiameter = diameterOpt(root->right,&rh);
  29.  
  30.     *height = max(lh,rh)+1;
  31.  
  32.  
  33.     return max(lh+rh+1,max(ldiameter,rdiameter));
  34. }
  35.  
  36. // Driver Code
  37. int main() {
  38.  
  39.     /* Constructed binary tree is
  40.             1
  41.            / \
  42.           2   3
  43.          / \
  44.         4   5
  45.     */
  46.     Node* root = new Node(1);
  47.     root->left = new Node(2);
  48.     root->right = new Node(3);
  49.     root->left->left = new Node(4);
  50.     root->left->right = new Node(5);
  51.  
  52.     int height = 0;
  53.  
  54.     cout << diameterOpt(root, &height) << endl;
  55.  
  56.     return 0;
  57. }
Success #stdin #stdout 0s 5272KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
4
https://ideone.com/OTMrWf
language:
C++14 (gcc 8.3)
created:
6 days 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!