Introduction
Sorting – sort()
Sorting – sorted()
Sorting – reverse() and reversed()
Instruction
Very nice! There is also a function similar to reverse() named reversed(). The difference is that reversed() doesn't modify the original list. Here's how it's used:
books = [ 'Sound of Steel', 'Silent Duty', 'Marked for Crime', 'Faceless Tribunal', 'Enemy of Evil', 'Shot for Gold', 'Beyond the Storm' ] reversed_books = [] for item in reversed(books): reversed_books.append(item)
As you can see, reversed() works a bit differently than sorted() – it is used to iterate over the items of a list in the reverse order when we use a for loop. After the for loop in the code above, the reversed_books variable will contain all items from books in reverse order.
Exercise
Write a function named print_squared_reversed(input_list) that accepts a list of numbers, squares each number in the list, and prints the squared numbers in reverse order.
For example, given the input [1, 2, 3, 4], print:
16 9 4 1
Stuck? Here's a hint!
Use the following for loop:
for item in reversed(input_list):
