Adding elements to Linked List
head . push ( 4 ) NEW_LINE head . push ( 5 ) NEW_LINE head . push ( 7 ) NEW_LINE head . push ( 2 ) NEW_LINE head . push ( 9 ) NEW_LINE head . push ( 6 ) NEW_LINE head . push ( 1 ) NEW_LINE head . push ( 2 ) NEW_LINE head . push ( 0 ) NEW_LINE head . push ( 5 ) NEW_LINE head . push ( 5 ) NEW_LINE check = head . LinkedListLength ( ) NEW_LINE