完成查找

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- [最短路径](ch6/applications/README.md#2-最短路径)
- [拓扑排序](ch6/applications/README.md#3-拓扑排序)
- [关键路径](ch6/applications/README.md#4-关键路径)
## 8. [查找](ch7/README.md#查找)
- [查找](ch7/README.md#1-基本概念)
- [顺序查找](ch7/README.md#2-顺序查找)
- [折半查找](ch7/README.md#3-折半查找)
- [分块查找](ch7/README.md#4-分块查找)
- [B 树](ch7/README.md#5-B-树)
- [B+树](ch7/README.md#6-B+-树)
- [散列表](ch7/README.md#7-散列表)
- [](ch4/README.md#串)
- [基本概念](ch4/README.md#1-定义)
- [模式匹配(KMP)](ch4/README.md#6-KMP-算法)

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# 查找
## 1. 基本概念
![查找基本概念1](concept1.png)
![查找基本概念2](concept2.png)
## 2. 顺序查找
![顺序查找1](sequential-search1.png)
![顺序查找2](sequential-search2.png)
![顺序查找3](sequential-search3.png)
![顺序查找4](sequential-search4.png)
![顺序查找5](sequential-search5.png)
## 3. 折半查找
![折半查找1](binary-search1.png)
![折半查找2](binary-search2.png)
![折半查找3](binary-search3.png)
![折半查找4](binary-search4.png)
![折半查找5](binary-search5.png)
![折半查找6](binary-search6.png)
![折半查找7](binary-search7.png)
## 4. 分块查找
![分块查找1](block-search1.png)
![分块查找2](block-search2.png)
![分块查找3](block-search3.png)
![分块查找4](block-search4.png)
![分块查找5](block-search5.png)
## 5. B 树
![B树1](b-tree1.png)
![B树2](b-tree2.png)
![B树3](b-tree3.png)
![B树4](b-tree4.png)
### 5.1. 插入
![B树5](b-tree5.png)
#### 5.1.1. 直接插入
![B树6](b-tree6.png)
#### 5.1.2. 向上分裂
![B树7](b-tree7.png)
![B树8](b-tree8.png)
![B树9](b-tree9.png)
![B树10](b-tree10.png)
### 5.2. 删除
![B树11](b-tree11.png)
#### 5.2.1. 终端结点
![B树12](b-tree12.png)
- 直接删除。
![B树13](b-tree13.png)
- 兄弟够借。
![B树14](b-tree14.png)
![B树15](b-tree15.png)
- 兄弟不够借。
![B树16](b-tree16.png)
![B树17](b-tree17.png)
#### 5.2.2. 非终端结点
![B树18](b-tree18.png)
- 删除前驱节点的最大值。
![B树19](b-tree19.png)
![B树20](b-tree20.png)
- 删除后继结点的最小值。
![B树21](b-tree21.png)
![B树22](b-tree22.png)
- 合并子结点。
![B树23](b-tree23.png)
![B树24](b-tree24.png)
## 6. B+ 树
> 考研中对 B+ 树之考查定义;对 B 树既考察定义,也考察操作。
![B+树1](b-plus-tree1.png)
![B+树2](b-plus-tree2.png)
![B+树3](b-plus-tree3.png)
![B+树4](b-plus-tree4.png)
## 7. 散列表
### 7.1. 基本概念
![散列表1](hash-table1.png)
### 7.2. 散列函数
![散列表2](hash-table2.png)
![散列表3](hash-table3.png)
![散列表4](hash-table4.png)
![散列表5](hash-table5.png)
![散列表6](hash-table6.png)
### 7.3. 冲突处理
![散列表7](hash-table7.png)
![散列表8](hash-table8.png)
![散列表9](hash-table9.png)
![散列表10](hash-table10.png)
![散列表11](hash-table11.png)
![散列表12](hash-table12.png)
![散列表13](hash-table13.png)
![散列表14](hash-table14.png)
![散列表15](hash-table15.png)
### 7.4. 性能分析
![散列表16](hash-table16.png)
![散列表17](hash-table17.png)

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