# 哈希计算-冲突

设哈希表长为14，哈希函数是H(key)=key%11,表中已有数据的关键字为15，38，61，84共四个，现要将关键字为49的结点加到表中，用二次探测再散列法解决冲突，则放入的位置是( )

```
15，38，61，84用哈希函数H(key)=key%11计算后得地址:4,5,6,7
49计算后为5,发生冲突.
用二次探测再散列法解决冲突:
1:(key+1^2)%11=(49+1)%11=6,仍然发生冲突.
2:(key-1^2)%11=(49-1)%11=4,仍然发生冲突.
3:(key+2^2)%11=(49+4)%11=9,不再发生冲突.
```


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