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Update DeleteTail.cpp #4

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Update DeleteTail.cpp #4

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21 changes: 10 additions & 11 deletions DSA Essentials Solutions/Linked List/DeleteTail.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -25,17 +25,16 @@ node* deleteTail(node * head){
return NULL;
}

// Find the second last node
node* second_last = head;
while (second_last->next->next != NULL)
second_last = second_last->next;

// Delete last node
delete (second_last->next);

// Change next of second last
second_last->next = NULL;

node * temp = head;
node *prev = head; //prev will hold the address of second last node
while(temp->next!=NULL){
prev = temp;
temp = temp->next;
}

prev->next = NULL;
delete temp; //delete the last node

return head;
}