C++ solution:I get an error like this Runtime Error Message: free(): invalid pointer: 0x00007f291d788688 *** Last executed input: []. Here is my code:


  • 0
    D

    please help me with this.

     * Definition for singly-linked list.
     * struct ListNode {
     *     int val;
     *     ListNode *next;
     *     ListNode(int x) : val(x), next(NULL) {}
     * };
     */
    class Solution {
    public:
    ListNode* oddEvenList(ListNode* head) {
        ListNode* t=head;
        int c=0,t1=-1,t2=-1,a[100],b[100];
        while(t!=NULL)
        {
            c++;
            t=t->next;
        }
        t=head;
        for(int i=1;i<=c;i++)
        {
          if(i%2==0)
          {
              b[++t1]=t->val;
          }
          else
          {
              a[++t2]=t->val;
          }
          t=t->next;
        }
        int i=t2+1;
        int j=0;
        ListNode* p,*p2;
        while(j<i)
        {
            ListNode* newnode=new ListNode(0);
            if(j==0)
            {
               newnode->val=a[j];
               p=newnode;
               p2=newnode;
            }
            else
            {
                newnode->val=a[j];
                p2->next=newnode;
                p2=newnode;
            }
            j++;
        }
        i=t1+1;
        j=0;
        while(j<i)
        {
            ListNode* newnode=new ListNode(0);
            newnode->val=b[j];
            p2->next=newnode;
            p2=newnode;
            j++;
        }
        return p;
    
    
     }
    };  ```

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