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  1. //
  2. //  main.cpp
  3. //  Mirror Images
  4. //
  5. //  Created by Himanshu on 04/09/21.
  6. //
  7.  
  8. #include <iostream>
  9. #include <queue>
  10. using namespace std;
  11.  
  12. const int N = 5;
  13.  
  14. struct node {
  15.     int info = 0;
  16.     struct node *left, *right;
  17. };
  18. typedef struct node Node;
  19.  
  20. node* newNode(int data)
  21. {
  22.     node* Node = new node();
  23.     Node->info = data;
  24.     Node->left = NULL;
  25.     Node->right = NULL;
  26.  
  27.     return(Node);
  28. }
  29.  
  30. void printArray (int arr[]) {
  31.     for (int i=0; i<N; i++) {
  32.         cout<<arr[i]<<" ";
  33.     }
  34.     cout<<endl;
  35. }
  36.  
  37. bool checkMirrorImages (int A[], int B[]) {
  38.  
  39.     for (int i=0, k=N-1; i<N && k>=0; i++, k--) {
  40.         if (A[i] != B[k]) {
  41.             return false;
  42.         }
  43.     }
  44.     return true;
  45. }
  46.  
  47. void inorder (Node *root, int arr[], int &k) {
  48.     if (root == NULL) {
  49.         return;
  50.     }
  51.  
  52.     // traverse left
  53.     inorder (root->left, arr, k);
  54.  
  55.     // store root
  56.     arr[k++] = root->info;
  57.  
  58.     // traverse right
  59.     inorder (root->right, arr, k);
  60. }
  61.  
  62.  
  63.  
  64. int main() {
  65.     Node *root1 = newNode(1);
  66.     root1->left = newNode(20);
  67.     root1->right = newNode(21);
  68.     root1->right->left = newNode(30);
  69.     root1->right->right = newNode(31);
  70.  
  71.     Node *root2 = newNode(1);
  72.     root2->left = newNode(21);
  73.     root2->right = newNode(20);
  74.     root2->left->left = newNode(31);
  75.     root2->left->right = newNode(30);
  76.  
  77.     int A[N], B[N];
  78.     int k = 0;
  79.  
  80.     inorder (root1, A, k);
  81.     k = 0;
  82.     inorder (root2, B, k);
  83.  
  84.     cout<<"Array A:"<<endl;
  85.     printArray(A);
  86.     cout<<"Array B:"<<endl;
  87.     printArray(B);
  88.  
  89.     if (checkMirrorImages(A, B)) {
  90.         cout<<"Trees are mirror Images"<<endl;
  91.     } else {
  92.         cout<<"Trees are not mirror Images"<<endl;
  93.     }
  94.     return 0;
  95. }
  96.  
Success #stdin #stdout 0s 5260KB
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stdin
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Standard input is empty
stdout
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Array A:
20 1 30 21 31 
Array B:
31 21 30 1 20 
Trees are mirror Images
https://ideone.com/QRf3zg
language:
C++14 (gcc 8.3)
created:
2 years ago
visibility:
secret

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