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2 changes: 2 additions & 0 deletions 动态规划系列/动态规划详解进阶.md
Original file line number Diff line number Diff line change
Expand Up @@ -88,6 +88,8 @@ int fib(int N) {
}
```

<visual slug='mydata-fib'/>

这个不用多说了,学校老师讲递归的时候似乎都是拿这个举例。我们也知道这样写代码虽然简洁易懂,但是十分低效,低效在哪里?假设 n = 20,请画出递归树:

![](https://labuladong.github.io/pictures/动态规划详解进阶/1.jpg)
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