# Segment Tree

- [Basic Operations: Build, Modify and Query](/algorithm-notes/segment-tree/basic-operations-build-modify-and-query.md)
- [Interval Sum 区间求和](/algorithm-notes/segment-tree/interval-sum-qu-jian-qiu-he.md)
- [Interval Sum II 区间求和 II](/algorithm-notes/segment-tree/interval-sum-ii-qu-jian-qiu-he-ii.md)
- [Interval Minimum Number](/algorithm-notes/segment-tree/interval-minimum-number.md)
- [Count of Smaller Number](/algorithm-notes/segment-tree/count-of-smaller-number.md)
- [Count of Smaller Number before itself](/algorithm-notes/segment-tree/count-of-smaller-number-before-itself.md)
- [Count of Smaller Numbers After Self](/algorithm-notes/segment-tree/count-of-smaller-numbers-after-self.md)
