合并两个双端队列的最快方法 [英] Fastest way to merge two deques
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问题描述
是否存在一种更快的合并两个双端队列的方法?
Exist a faster way to merge two deques than this?
# a, b are two deques. The maximum length
# of a is greater than the current length
# of a plus the current length of b
while len(b):
a.append(b.popleft())
请注意,我对保留输入双端队列不感兴趣,只对尽快合并合并双端感兴趣.
Note that I'm not interested in preserving input deques, I'm only interested in having the merged one as fast as possible.
推荐答案
不需要逐元素追加,只需使用+=
:
There's no need for elementwise appending, you can just use +=
:
from collections import deque
a = deque([1, 2, 3])
b = deque([4, 5, 6])
a += b
print(a)
deque([1, 2, 3, 4, 5, 6])
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