Snobol4 语言 实战 URL 路径深度计算实战

Snobol4amuwap 发布于 4 天前 2 次阅读

Snobol4 语言实战：URL 路径深度计算实战

Snobol4 是一种古老的编程语言，它最初在1962年由David J. Farber、Ralph E. Griswold 和 Ivan P. Polonsky 在贝尔实验室开发。尽管它已经不再广泛使用，但Snobol4 在历史上对编程语言的发展有着重要的影响。本文将探讨如何使用Snobol4 语言实现一个实用的功能——计算URL路径的深度。

Snobol4 简介

Snobol4 是一种基于字符串处理的编程语言，它以其强大的字符串操作能力而闻名。Snobol4 的语法简洁，易于理解，特别适合于文本处理任务。在Snobol4 中，没有传统的变量声明和赋值操作，所有的操作都是基于字符串的。

URL 路径深度计算

URL 路径深度是指从根目录到当前路径的层级数。例如，在路径 `/home/user/documents` 中，深度为3。

实现思路

为了计算URL路径的深度，我们可以采用以下步骤：

1. 将URL路径字符串分割成各个部分。
2. 计算分割后的部分数量，即为路径深度。

Snobol4 代码实现

以下是一个使用Snobol4 语言实现的URL路径深度计算程序：

```snobol
:URL STRING
:DEPTH 0
:PARTS STRING

'/' SUBSTRING :PARTS
:DEPTH + :DEPTH

:PARTS = :PARTS - 1
:DEPTH > 0
:PARTS SUBSTRING :PARTS
:DEPTH + :DEPTH
:PARTS = :PARTS - 1
:DEPTH > 0
:PARTS SUBSTRING :PARTS
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:PARTS = :PARTS - 1
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:PARTS SUBSTRING :PARTS
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:PARTS = :PARTS - 1
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:PARTS SUBSTRING :PARTS
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:PARTS = :PARTS - 1
:DEPTH > 0
:PARTS SUBSTRING :PARTS
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:PARTS = :PARTS - 1
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:PARTS SUBSTRING :PARTS
:DEPTH + :DEPTH
:PARTS = :PARTS - 1
:DEPTH > 0
:PARTS SUBSTRING :PARTS
:DEPTH + :DEPTH
:PARTS = :PARTS - 1
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:PARTS SUBSTRING :PARTS
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:PARTS SUBSTRING :PARTS
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:PARTS = :PARTS - 1
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:PARTS SUBSTRING :PARTS
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:PARTS = :PARTS - 1
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:PARTS SUBSTRING :PARTS
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:PARTS SUBSTRING :PARTS
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