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Handle empty input case in Segment Tree build process (#8718)

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roger-sato 2023-08-01 03:46:30 +09:00 committed by GitHub
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data_structures/binary_tree/segment_tree.py
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@ -7,6 +7,7 @@ class SegmentTree:
self.st = [0] * ( self.st = [0] * (
4 * self.N 4 * self.N
) # approximate the overall size of segment tree with array N ) # approximate the overall size of segment tree with array N
if self.N:
self.build(1, 0, self.N - 1) self.build(1, 0, self.N - 1)
def left(self, idx): def left(self, idx):