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  1. #include <iostream>
  2. #include<stack>
  3. using namespace std;
  4. struct node{
  5. 	         int data;
  6. 	         struct node* next;
  7. };
  8. struct node* createnode(int val)
  9. {
  10. 	struct node* p=(struct node*)malloc(sizeof(struct node));
  11. 	p->data=val;
  12. 	p->next=NULL;
  13. 	return p;
  14. }
  15. int palindrome(struct node* head)
  16. {
  17. 	struct node* cur=head;
  18. 	if(head==NULL)
  19. 	return 0 ;
  20. 	stack<int> s;
  21. 	while(cur!=NULL)
  22. 	{
  23. 		s.push(cur->data);
  24. 		cur=cur->next;
  25. 	}
  26. 	while(head)
  27. 	{
  28. 		int c=s.top();
  29. 		s.pop();
  30. 		if(head->data==c)
  31. 		{
  32. 			head=head->next;
  33. 		}
  34. 		else
  35. 		{
  36. 			return 0;
  37. 		}
  38. 	}
  39. 	return 1;
  40. }
  41.  
  42.  
  43. int main() {
  44. 	struct node* head=createnode(1);
  45. 	head->next=createnode(1);
  46. 	head->next->next=createnode(2);
  47. 	head->next->next->next=createnode(1);
  48. 	int res=palindrome(head);
  49. 	//cout<<isalpha;
  50. 	cout<<res;
  51. 	return 0;
  52. }
Success #stdin #stdout 0.01s 5284KB
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https://ideone.com/Wv6yvE
language:
C++ (gcc 8.3)
created:
9 days ago
visibility:
public

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