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hashes and databases

Match the data structure names on the left with their descriptions on
the right. We’ve already done one for you. Which one do you think
you’ll need to use for the surfer data?

Array A variable that allows data to enter
at one end of a collection and leave
at the other end, supporting a first-in,
first-out mechanism

Linked list A variable that contains data arranged
as a matrix of multiple dimensions
(but typically, only two)

Queue A variable that has exactly two
columns and (potentially) many rows
of data

Hash A variable with multiple indexed slots
for holding data

A variable that creates a chain of data
where one data item points to another
Set
data item, which itself points to
another data item, and another, and
so on and so forth

Multi-dimensional array A variable that contains a collection
of unique data items

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