Create a function that retrieves every number that is strictly larger than every number that follows it.
larger_than_right([3, 13, 11, 2, 1, 9, 5]) ➞ [13, 11, 9, 5]
# 13 is larger than all numbers to its right, etc.
larger_than_right([5, 5, 5, 5, 5, 5]) ➞ [5]
# Must be strictly larger.
# Always include the last number.
larger_than_right([5, 9, 8, 7]) ➞ [9, 8, 7]
The last number in an array is trivially strictly larger than all numbers that follow it (no numbers follow it).