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LC 0158 [H] Read N Characters Given Read4 II Call multiple times
Code with Senpai edited this page Jan 5, 2021
·
3 revisions
read4 -> Queue -> buffer
# The read4 API is already defined for you.
# def read4(buf4: List[str]) -> int:
class Solution(object):
def __init__(self):
self.Q = deque()
def read(self, buf, n):
i = 0
while i < n:
if not self.Q:
# read into queue
buf4 = [''] * 4
read_len = read4(buf4)
if not read_len: break
self.Q.extend(buf4)
else:
# transfer queue to buffer
buf[i] = self.Q.popleft()
i += 1
return i
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