Please help me with the output and also understand it! Please read carefully.

Full points will be awarded, thanks in advance

Linked List Problem The following code implements a linked list of single characters. Note that this list has no dummy node between the head and the first node #include iostream> using namespace std; class List public: List( char data; void show): void doSomethingFunl); void doSomethingFun2); private: struct Node char item; Node next; Node *head; List::List( char data ) Node *currentNULL Node *prevNULL; for ( int i-4; 1 >-1; 1.. ) { currentnew Node; current->item = data + i; current->nextprev: 1 head- current; prev current; void List:: show) for ( Node *current = head; current NULL; current = current->next ) cout item "->"; cout item current->item born ->nextcurrent->next; current->next born; current - current->next->next; void List: :doSomethingFun2{ Node *next NULL, *tail-NULL ; for ( Node *current head ; current-NULL ; current next ) { next - current->next; if ( currenthead) continue; if ( current->next = NULL ) { tail-current break; delete current if (headNULL head->next tail; int main( int argc, char argv[ List list('0'; list.show // 1st list.show) list.doSomethingFun1 ; list.show // 2nd list.show( ) list.doSomethingFun2 ) list.show); I/ 3rd list.show) Write an output by the 1st. 2nd, and 3rd list.show)