people is a list of [name, age]. Write youngest_first(people) returning names from youngest to oldest.
youngest_first([['Asha', 30], ['Om', 8], ['Ravi', 22]]) → ['Om', 'Ravi', 'Asha']
youngest_first([]) → []
Submit runs 3 tests, including hidden edge cases.
Each hint gives a little more help. Try on your own first.
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