Linked List

Question 1

Syntax

This method Inserts the specified element at the specified position in this list.

Answer 1

list.add​(int index, E element)

Question 2

Syntax

This method Inserts all of the elements in the specified collection into this list, starting at the specified position.

Answer 2

list.addAll​(int index, Collection c)

Question 3

Syntax
This method Appends all of the elements in the specified collection to the end of this list, in the order that they are returned by the specified collection’s iterator.

Answer 3

list.addAll​(Collection c)

Question 4

Syntax

1. This method Inserts the specified element at the beginning of this list.
2. This method Appends the specified element to the end of this list.

Answer 4

1. list.addFirst​(E e)

2. list.addLast​(E e)

Question 5

Syntax

This method removes all of the elements from this list.

Answer 5

list.clear​()

Question 6

Syntax

This method returns a shallow copy of this LinkedList

Answer 6

list.clone​()

Question 7

Syntax

This method returns true if this list contains the specified element.

Answer 7

list.contains​(Object o)

Question 8

Syntax

This method retrieves, but does not remove, the head (first element) of this list.

Answer 8

list.element​()

Question 9

Syntax

This method returns the element at the specified position in this list.

Answer 9

list.get​(int index)

Question 10

Syntax

1. This method returns the first element in this list.
2. This method returns the last element in this list.

Answer 10

1. list.getFirst​()

2. list.getLast​()

Question 11

Syntax
This method returns the index of the first occurrence of the specified element in this list, or -1 if this list does not contain the element.

Answer 11

list.indexOf​(Object o)

Question 12

Syntax

1. This method Inserts the specified element at the front of this list.
2. This method Inserts the specified element at the end of this list.

Answer 12

1. list.offerFirst​(E e)

2. list.offerLast​(E e)

Question 13

Syntax

This method retrieves, but does not remove, the head (first element) of this list.

Answer 13

list. peek​()
list. peekFirst​()
list. peekLast​()

Question 14

Syntax

This method retrieves and removes the head (first element) of this list.

Answer 14

list. poll()
list. pollFirst​():
list. pollLast​():

Question 15

Syntax

This method Pops an element from the stack represented by this list.

Answer 15

list.pop​()

Question 16

Syntax

This method Pushes an element onto the stack represented by this list.

Answer 16

list.push​(E e)

Question 17

Syntax

This method retrieves and removes the head (first element) of this list.

Answer 17

list. remove​()
list. removeFirst​()
list. removeLast​()

Question 18

Syntax

This method replaces the element at the specified position in this list with the specified element.

Answer 18

list.set​(int index, E element)

Question 19

Syntax

This method returns the number of elements in this list.

Answer 19

list.size​()

Question 20

Syntax

This method returns an array containing all of the elements in this list in proper sequence (from first to last element)

Answer 20

list.toArray​()