V2EX modint

Modint

释义 Definition

modint(常见于编程语境)指“模整数/ 取模整数类型”,通常表示在固定模数 \(m\) 下进行加、减、乘(有时也包括除/求逆)等运算的整数封装类型,用于避免溢出并简化模运算代码。(也常被理解为 modular integer 的缩写。)

发音 Pronunciation (IPA)

/mdnt/

例句 Examples

I used a modint to keep all results under 1,000,000,007.
我用了一个 modint 来确保所有结果都在 1,000,000,007 这个模数范围内。

In competitive programming, a modint class can simplify modular arithmetic and reduce bugs when combining many operations.
在竞赛编程中,modint 类能简化取模运算,并在大量组合运算时减少出错。

词源 Etymology

modint 多被视为由 mod(modulo,取模)+ int(integer,整数)拼合而成的缩写/行话,主要流行于算法竞赛与程序库(尤其是 C++ 模板/库)中,用来指代“带模运算规则的整数类型封装”。

相关词 Related Words

文学与作品 Literary Works

  • AtCoder Library (ACL) Documentation(AtCoder Library 的文档与示例代码中常出现 modint 作为类型名,如 modint998244353 等)
  • cp-algorithms(算法与实现文章/代码示例中常以 modint 指代模运算封装类)
  • Competitive Programming(Steven Halim 等,竞赛编程类教材及其配套代码/社区实现中常出现类似 modint 的命名与封装思想)
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