Keep the Order

This unusual sort does not move elements around; it removes anything that breaks the order. Walk through sequence from left to right and keep a number only if it is not smaller than every number already kept. Return the non-decreasing list of surviving elements.

Примеры

Ввод
[4, 3, 5, 2, 1, 7]
Вывод
[4, 5, 7]
Ввод
[1, 2, 3, 4]
Вывод
[1, 2, 3, 4]
Ввод
[4, 5, 5, 2, 3]
Вывод
[4, 5, 5]

Нужно реализовать

def stalin_sort(sequence: list[int]) -> list[int]:

Теги

sorting
PostgreSQLv16

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Tests12
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