Creating the list 1.2 . 4.5
head = null ; head = new Node ( 1 ) ; head . next = new Node ( 2 ) ; head . next . next = new Node ( 4 ) ; head . next . next . next = new Node ( 5 ) ; System . out . println ( " Linked ▁ list ▁ before " + " ▁ insertion : ▁ " ) ; display ( ) ; int x = 3 ; insertAtMid ( x ) ; System . out . println ( " Linked list after " + ▁ " insertion : "); display ( ) ; } }