Are these correct? A linked list is represented by a reference to Answer the fir

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Are these correct? A linked list is represented by a reference to Answer the first node in the list, unless the list is empty, in which case the reference is set to null to the list representation object, which contains a boolean flag set to false when the list is empty the superclass of the list None of these A linked list is represented by a reference to the first node in the list, unless the list is empty, in which case the reference is set to null to the list representation object, which contains a boolean flag set to false when the list is empty the superclass of the list None of these On the average, performing a sequential search on an array of N elements will require N comparisons N-1 comparisons N/2 comparisons None of these


The stack pop operation removes all items currently on the stack extracts one element from the stack and returns it removes from the stack the number of elements specified by its integer parameter
In an array-based implementation of a stack, an operation that needs to add a new element to the stack may not be able to complete because the array is full. In this case, the failed operation should print an error message and return from the method throw some appropriately defined exception print an error message and exit A LinkedList is the right kind of list to use when most of the elements added to the list are being added at the end there are lots of insertions and deletions in the middle of the list elements are added to the list in groups of twos, threes, or more each element added is a reference to another item

If an array is known to be sorted, it can be searched very quickly by using Answer sequential search binary search selection search None of these If an array is known to be sorted, it can be searched very quickly by using sequential search binary search selection search None of these When an exception is thrown, It must always be handled by the method that throws it the program terminates even if the exception is handled it must be handled by the program or by the default exception handler A linked list class keeps its elements in the order in which they are added, with the index of an element X being greater than the index of any element added to the list before X. Addition of new elements to such a list can be made more efficient by keeping a reference to the element with the least index by starting at the head, and quickly traversing the list to locate the place where a new element should be added by keeping a reference to the last element added return top; the first node in the list, unless the list is empty, in which case the reference is set to null to the list representation object, which contains a boolean flag set to false when the list is empty the superclass of the list None of these

Explanation / Answer

1)

the first node in the list, unless the list is empty, in which case the reference is set to null 2)N/2 comparisons 3)removes from the stack the number of elements specified by its integer parameter 4)throw some appropriately defined exception 5) elements are added to the list in groups of twos, threes, or more
6) binary search
7) the program terminates even if the exception is handled
8) by starting at the head, and quickly traversing the list to locate the place where a new element should be added
9)b

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