One-Step Stack
Here you need to check whether the values in a stack form a clean increasing chain. Given stack, where the bottom is on the left and the top is on the right, return True if each next element is exactly 1 greater than the previous one. If this order breaks even once, return False.
Примеры
Ввод
[3, 4, 5, 6, 7]Вывод
TrueВвод
[3, 4, 6, 7]Вывод
FalseВвод
[3, 2, 1]Вывод
FalseНужно реализовать
def is_consecutive(stack: list[int]) -> bool:
Теги
stack
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1
Input
[3,4,5,6,7]Expected
True2
Input
[3,4,6,7]Expected
False3
Input
[3,2,1]Expected
False4
Input
[5]Expected
True5
Input
[3]Expected
True6
Input
[]Expected
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