segment_tree: get_max() return 0 if tree empty
parent
74f31875b8
commit
347b54e0f7
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@ -246,6 +246,10 @@ pub mod segment_tree {
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/// (left, right) is inclusive
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pub fn get_max(&self, mut left: usize, mut right: usize) -> u8 {
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if self.array.is_empty() {
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return 0;
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}
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let len = self.array.len();
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debug_assert!(left <= right);
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if right >= len {
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