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# 104. 二叉树的最大深度
## 入选理由
暂无
## 题目地址
[https://leetcode-cn.com/problems/maximum-depth-of-binary-tree](https://leetcode-cn.com/problems/maximum-depth-of-binary-tree)
## 前置知识
…
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It *might* be possible to just initialize the recursions using formulas like [these](https://math.stackexchange.com/a/107984/26404). In particular, the [DLMF has](https://dlmf.nist.gov/14.3.E6)
$$…
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```python
def test_peg_associativity(self):
left_grammar = '''
@@left_recursion :: True
@@nameguard :: False
start = A $ ;
A = | A '…
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Here is the description of this problem from stackoverflow:
http://stackoverflow.com/questions/23626376/antlr4-mutual-left-recursion
Here is the issue:
```
classOrInterfaceType
: (classOrInte…
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Parser combinator libraries, like our very own `miniparsec`, are often vulnerable to left-recursion:
> **Expressions with left recursion cannot be encoded by recursive descent parsers and will dive…
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| --- | --- |
| Bugzilla Link | [429577](https://bugs.eclipse.org/bugs/show_bug.cgi?id=429577) |
| Status | NEW |
| Importance | P3 normal |
| Reported | Mar 04, 2014 10:55 EDT |
| Modified | Apr…
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import { select,ident_part,from,__,_ } from '../../common/common.js';
// select.peggy:
selectStatement
= select _ colunm_clause:colunm_clause _ from _ table_name:table_name __ ';'{ return `colum…
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Hello again @kjosib!
Have you ever tried finding associativity and precedence related ambiguities just from the structure of the CFG?
Assuming there's no [hidden recursion](https://github.com/kj…
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### Repro
```csharp
Recursion(1);
void Recursion(int x)
{
Recursion(x+1);
Recursion(x+1);
}
```
### Actual result
`Segmentation fault`
### Expected result
`Process is ter…
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# Background
KCL's sketching API builds one path per function application. Sketching a square requires calling `line` four times:
```
let square = startSketch('XY')
|> line([4, 0], %)
|> …