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Which of the following statements about arrays and linked lists in Java is/are Incorrect ? a. Arrays are always faster than linked lists. b. Linked lists are always faster than arrays. c. Arrays are better for random access, while linked lists are better for sequential access. d. Arrays and linked lists have the same performance for both random and sequential access.

Question

Which of the following statements about arrays and linked lists in Java is/are Incorrect ? a. Arrays are always faster than linked lists. b. Linked lists are always faster than arrays. c. Arrays are better for random access, while linked lists are better for sequential access. d. Arrays and linked lists have the same performance for both random and sequential access.

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Solution

The incorrect statements about arrays and linked lists in Java are:

a. Arrays are always faster than linked lists. b. Linked lists are always faster than arrays. d. Arrays and linked lists have the same performance for both random and sequential access.

Explanation:

a. It's incorrect because the speed of arrays and linked lists depends on the operation. Arrays are faster for random access because they provide direct access to any data element. However, for operations like insertion and deletion, linked lists are faster because they only require changing the address in the node.

b. This statement is also incorrect for the same reasons. Linked lists are not always faster than arrays. It depends on the operation being performed.

d. This statement is incorrect because arrays and linked lists do not have the same performance for both random and sequential access. Arrays are better for random access while linked lists are better for sequential access.

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