Select an appropriate expression to complete the following code segment, which is designed to print a message if the string stored in name is the first element of the players linked list.
A)(players.getFirst().equals(name))
B)(players[0].equals(name))
C)(players.contains(name))
D)(players.indexOf(name) == 1)

Question

Select an appropriate expression to complete the following code segment, which is designed to print a message if the string stored in name is the first element of the players linked list.  
A)(players.getFirst().equals(name)) 
B)(players[0].equals(name)) 
C)(players.contains(name)) 
D)(players.indexOf(name) == 1)

Quizplus · Accepted Answer

The method getFirst() returns the first element of the linked list, which is what we want to compare to the string stored in name using the equals() method. Option B is incorrect because linked lists do not have an index like arrays, so it is not possible to access an element via an index. Option C checks whether the linked list contains the string stored in name, but we want to specifically check if it is the first element. Option D checks if the index of the string is 1, which is not necessarily the first element.

Select an Appropriate Expression to Complete the Following Code Segment