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16 lines
246 B
Python
16 lines
246 B
Python
from collections import Counter, deque
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q = deque()
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q.append(1)
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q.append(2)
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q.appendleft(3)
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q.append(4)
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assert len(q) == 4
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assert q == deque([3, 1, 2, 4])
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assert q.popleft() == 3
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assert q.pop() == 4
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assert len(q) == 2
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assert q == deque([1, 2]) |