Describe a set. Provide a a code snippet with common operations.

Describe dictionary. Provide a a code snippet with common operations.

$$Describe a hashing technique.

$$Assume that the set s contains the number

$3$

$.$

$$ Write the sequence of sets

$($

for each line below

$)$

$$resulting from the following operations:

s

$.$

add

$($

$4$

$)$

s

$.$

add

$($

$4$

$)$

s

$.$

add

$($

$5$

$)$

$$

s

$.$

remove

$($

$3$

$)$