Java data structure

You should provide a Double headed doubly linked list with test for beginner.

You should write those four member methods with asymptotic run-time analysis and other methods you think beginner should know.

//insertTail

//insertHead

//removeTail

//removeHead

Please, dont make this to hard for understanding. Just for beginner studying.

Head Tail Null 3 1 2 A2 3 }