Question 3 An array is a data structure that associates integer indexes (in Java

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Question 3

An array is a data structure that associates integer indexes (in Java, the indexes go from 0 to the one less than the length of the array) with values of a particular type. For example, in Java, a String array associates an integer index with a particular String object.

An associative array is a data type that associates a unique key with a particular value. Unlike an array, the key does not have to be a non-negative integer index. It could be a string, a character, or a number (including negative numbers), as long as the keys are unique values.

What data structure in Java most closely resembles an associative array?

Question 4

Have you ever seen something like this while watching a video online?

When a video -- or any kind of streaming media -- is buffering, it means that it is preloading data into memory so that it will run smoothly when it is played back on your device.

What data structure is used to implement a buffer?

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Question 5

According to the module recording, which description best characterizes the representation of a Java LinkedList that has exactly one element.

A dequeue -- or double ended queue -- because dequeues are generalizations of queues and stacks, so that you can add and remove elements from either end. 111N Buffering Please Wait..

Explanation / Answer

Hi,

Below are the answers-

Ans 3 - A map, because the key-value pairs in a map correspond to the key-value pairs in an associative array.

Ans 4 - A queue, because blocks of data are played back from the queue in the same order that they arrive.

Ans 5 - The representation has one node with a single next link.

Regards,

Vinay

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