list nodes are as 6 5 4 3 2 1
head = push ( head , 1 ) NEW_LINE head = push ( head , 2 ) NEW_LINE head = push ( head , 3 ) NEW_LINE head = push ( head , 4 ) NEW_LINE head = push ( head , 5 ) NEW_LINE head = push ( head , 6 ) NEW_LINE print ( " Given ▁ linked ▁ list : " ) NEW_LINE