Snobol4 语言 词频统计案例 使用数组存储统计结果

阿木博主一句话概括：Snobol4^【1】 语言词频统计^【2】案例分析：数组^【3】存储统计结果

阿木博主为你简单介绍：
Snobol4 是一种古老的编程语言，以其简洁的语法和强大的文本处理^【4】能力而闻名。本文将围绕 Snobol4 语言进行词频统计案例的分析，重点探讨如何使用数组来存储统计结果。通过实际代码示例，我们将深入探讨 Snobol4 的数组操作和文本处理功能，为读者提供一种使用 Snobol4 进行词频统计的实用方法。

一、
词频统计是自然语言处理^【5】中的一个基本任务，它可以帮助我们了解文本中各个词汇的分布情况。在 Snobol4 语言中，我们可以通过数组来存储词频统计的结果，从而实现这一功能。本文将详细介绍如何使用 Snobol4 进行词频统计，并重点分析数组在存储统计结果中的作用。

二、Snobol4 语言简介
Snobol4 是一种高级编程语言，由 Stephen R. Gilman^【6】 和 David J. Farber^【7】 在 1962 年设计。它以其强大的文本处理能力而著称，特别适合于文本编辑、文本搜索和文本分析等任务。Snobol4 的语法简洁，易于理解，但同时也具有一定的挑战性。

三、词频统计的基本原理
词频统计的基本原理是遍历^【8】文本，对每个单词进行计数，并将结果存储在数组中。以下是词频统计的基本步骤：

1. 读取文本数据。
2. 对文本进行分词处理^【9】，将文本分割成单词。
3. 遍历所有单词，对每个单词进行计数。
4. 将计数结果存储在数组中。

四、Snobol4 中的数组操作
Snobol4 提供了丰富的数组操作功能，包括数组的创建、访问、赋值^【10】和排序^【11】等。以下是一些常用的数组操作：

1. 创建数组^【12】：使用 `array` 关键字创建数组。
2. 访问数组元素^【13】：使用下标访问数组元素。
3. 赋值：使用 `put` 或 `set` 语句给数组元素赋值。
4. 排序：使用 `sort` 语句对数组进行排序。

五、Snobol4 词频统计案例
以下是一个使用 Snobol4 进行词频统计的示例代码：

```snobol
:input
input line
put line, ' ' into word
while word
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