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  1. #include<stdio.h>
  2. #include<malloc.h>
  3.  
  4. struct node
  5. {
  6.   int data;
  7.   struct node* left;
  8.   struct node* right;
  9.   struct node* next;
  10. };
  11.  
  12. typedef struct node Node;
  13.  
  14. void AddNode(Node* root, int number)
  15. {	
  16. 	if(root->data==number)
  17. 		return;
  18. 	else if(root->data>number)
  19. 	{
  20. 		if(root->left!=NULL)
  21. 		{
  22. 			AddNode(root->left,number);
  23. 		}
  24. 		else
  25. 		{
  26. 			Node* newNode = (Node*)malloc(sizeof(Node));
  27. 			newNode->data = number;
  28. 			newNode->left = NULL;
  29. 			newNode->right= NULL;
  30. 			newNode->next= NULL;
  31. 			root->left = newNode;
  32. 		}
  33. 	}
  34. 	else if(root->data<number)
  35. 	{
  36. 		if(root->right!=NULL)
  37. 		{
  38. 			AddNode(root->right,number);
  39. 		}
  40. 		else
  41. 		{
  42. 			Node* newNode = (Node*)malloc(sizeof(Node));
  43. 			newNode->data = number;
  44. 			newNode->left = NULL;
  45. 			newNode->right= NULL;
  46. 			newNode->next= NULL;
  47. 			root->right= newNode;
  48. 		}
  49. 	}
  50. }
  51.  
  52. int IsMirror(Node* left,Node* right)
  53. {
  54. 	if(left==NULL&&right==NULL)
  55. 		return 1;
  56. 	if(left==NULL||right==NULL)
  57. 		return 0;
  58. 	return(IsMirror(left->right,right->left)&&IsMirror(left->left,right->right));
  59. }
  60.  
  61. int IsFoldable(Node* root)
  62. {
  63. 	if(root==NULL)
  64. 		return 1;
  65. 	else
  66. 		return IsMirror(root->left,root->right);
  67. }
  68.  
  69.  
  70. int main()
  71. {
  72. 	Node* root = (Node*)malloc(sizeof(Node));
  73. 	root->data = 3;
  74. 	root->left = NULL;
  75. 	root->right= NULL;
  76. 	root->next= NULL;
  77.  
  78. 	AddNode(root,2);
  79. 	AddNode(root,1);
  80. 	AddNode(root,5);
  81. 	AddNode(root,6);
  82. 	//AddNode(root,6);
  83. 	//AddNode(root,9);
  84. 	//AddNode(root,17);
  85. 	//AddNode(root,11);
  86. 	//AddNode(root,10);
  87. 	//AddNode(root,3);
  88. 	//AddNode(root,4);
  89.  
  90.  
  91. 	printf("%d",IsFoldable(root));
  92.  
  93.   return 0;
  94. }
Success #stdin #stdout 0.02s 1852KB
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https://ideone.com/ShRGM
language:
C99 (gcc 8.3)
created:
14 years ago
visibility:
public

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