why cannot we use vector<ListNode *>?

  • 0

    Why cannot we use the vector<ListNode *> here?

    Here is my code:'''
    ListNode* reverseKGroup(ListNode* head, int k) {
    ListNode * temp=head;
    vector<ListNode *> v[k];
    for(int i=0; i<k; i++){
    if(temp == NULL){
    return head;
    v[0]->next = reverseKGroup(v[k-1].next, k);
    for(int i=k-1; i>0; i--){
    v[i]->next = v[i-1];

        return v[k-1];

    It gives me the error message of Line 18: no match for 'operator=' (operand types are 'std::vector<ListNode*>' and 'ListNode*')
    If I want this line of code working, does it mean I need to overload the operator in the ListNode struct in order for this line of code to work?

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