Filter list by price and id.
Sort list by given price in alphabetical order by name of item.
Find in list items by preset id and set them a specified name.
Skip and limit specified amount of elements.
Find first item by given id and print it.
Question: at least one item name in UpperCase.
Question: price of each item less than given price.
Question: there is NO items with a given id.
Find item with longest name.
Simple task of combinations flatMap, skip, limit methods.
Find items with distinct names.
Find count items with distinct names.
Print all distinct countries occurring in items.
Count of items that have a producing country Japan.