阿木博主一句话概括：Snobol4【1】 语言实现字符串按单词首字母分组的技术探讨
阿木博主为你简单介绍：
Snobol4 是一种古老的编程语言，以其简洁的表达方式和强大的文本处理能力而著称。本文将探讨如何使用 Snobol4 语言实现字符串按单词首字母分组的技巧。通过分析 Snobol4 的语法和特性，我们将展示如何编写高效的代码来处理这类问题。
关键词：Snobol4，字符串处理【2】，单词分组【3】，编程技巧【4】
一、
字符串按单词首字母分组是编程中常见的需求，尤其在数据分析【5】和文本处理领域。Snobol4 语言以其独特的文本处理能力，为这类问题提供了有效的解决方案。本文将详细介绍如何使用 Snobol4 实现这一功能。
二、Snobol4 语言简介
Snobol4 是一种高级编程语言【6】，由David J. Farber和Ralph E. Griswold于1962年设计。它以处理文本数据见长，具有丰富的文本处理函数【7】和表达式。Snobol4 的语法简洁，易于理解，适合于文本处理和模式匹配【8】。
三、字符串按单词首字母分组的需求分析【9】
在实现字符串按单词首字母分组之前，我们需要明确以下需求：
1. 输入：一个包含多个单词的字符串。
2. 输出：一个字典【10】（或类似结构），其中键为单词的首字母，值为包含该首字母的所有单词列表。
四、Snobol4 实现字符串按单词首字母分组
以下是一个使用 Snobol4 实现字符串按单词首字母分组的示例代码：
```snobol
:input
input-line {word}
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