Age Difference Between Spouses

Create a function that determines the age difference between spouses in a household. The ages ages in years of the parents and their children are given in a list.

If there is no difference in age between the parents, return "No age difference between spouses.". Otherwise, return the difference in years. Check the examples for more clarification.

Examples

age_difference([29, 1, 6, 8, 28]) ➞ "1 year"

age_difference([43, 86, 49, 86]) ➞ "No age difference between spouses."

age_difference([2, 4, 6, 32, 27]) ➞ "5 years"

Notes

• Note the singular "year".
• The younger spouse (if the spouses are not the same age) will be older than their oldest child by a minimum of 20 years.
• The age difference between spouses will not be more than 18 years.