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  1. //
  2. //  main.cpp
  3. //  Binary Search Tree (Basic)
  4. //
  5. //  Created by Himanshu on 16/09/21.
  6. //
  7.  
  8. #include <iostream>
  9. using namespace std;
  10.  
  11. struct node {
  12.     int info = 0;
  13.     struct node *left, *right;
  14. };
  15. typedef struct node Node;
  16.  
  17. node* newNode(int data)
  18. {
  19.     node* Node = new node();
  20.     Node->info = data;
  21.     Node->left = NULL;
  22.     Node->right = NULL;
  23.  
  24.     return(Node);
  25. }
  26.  
  27. Node* insert (Node *root, int n) {
  28.     if (root == NULL) {
  29.         root = newNode(n);
  30.     } else {
  31.         if (root->info > n) {
  32.             root->left = insert (root->left, n);
  33.         } else {
  34.             root->right = insert (root->right, n);
  35.         }
  36.     }
  37.     return root;
  38. }
  39.  
  40. Node* search (Node *root, int n) {
  41.     if (root == NULL || root->info == n) {
  42.         return root;
  43.     } else {
  44.         if (root->info > n) {
  45.             return search (root->left, n);
  46.         } else {
  47.             return search (root->right, n);
  48.         }
  49.     }
  50. }
  51.  
  52. int main() {
  53.     Node *root = newNode(5);
  54.     insert(root, 3);
  55.     insert(root, 2);
  56.     insert(root, 4);
  57.     insert(root, 7);
  58.  
  59.     //Searching 4 in the tree
  60.     if (search (root, 4)) {
  61.         cout<<"4 is present in the BST"<<endl;
  62.     } else {
  63.         cout<<"4 is not in the BST"<<endl;
  64.     }
  65.  
  66.     //Searching 8 in the tree
  67.     if (search (root, 8)) {
  68.         cout<<"8 is present in the BST"<<endl;
  69.     } else {
  70.         cout<<"8 is not in the BST"<<endl;
  71.     }
  72.  
  73.     return 0;
  74. }
  75.  
Success #stdin #stdout 0.01s 5348KB
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Standard input is empty
stdout
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4 is present in the BST
8 is not in the BST
https://ideone.com/qYS7ug
language:
C++ 4.3.2 (gcc-4.3.2)
created:
3 years ago
visibility:
secret

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